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19 October 2020 House of Commons briefing paper Number CBP 8897, 14 October 2020, published for the public The House of Commons Library research service kamagra pill cost provides MPs and their staff with the impartial briefing and evidence base they need to https://www.epide.fr/buy-generic-kamagra-online/ do their work in scrutinising Government, proposing legislation, and supporting constituents. As well as providing MPs with a confidential service they publish open briefing papers, which are available on the Parliament website. In the briefing paper for the House kamagra pill cost of Commons, Coronavirus.

Testing for Covid-19, it was clear that the IBMS was beginning to impact government thinking. It noted. 1.

There were reports during the early stages of the pandemic that some of the chemicals, or reagents, required for Covid-19 testing were in short supply (see Box 3). On 3 April 2020, the Institute of Biomedical Science (IBMS) issued a press release on testing capacity.2. Allan Wilson, President of the IBMS, told The Guardian that there were shortages of both the test kits as well as.

Some very basic reagents, such as the virology transport medium that we need to put the swabs in. The actual swabs are in short supply – effectively they are rationed in my patch in Scotland but I know there are problems in England as well.” The lysis buffer, used in extracting the RNA of the virus, was “in very, very short supply”, he said. So are precision plastics – “the little tubes and pipettes, so each test gets its own individual tube”.

Those will not be available until mid-May. 3. In addition, there have been some reports that capacity problems have been exacerbated by staff shortages as students and academics who were previously working in the labs return to their ‘day jobs’.

Allan Wilson, president of the Institute of Biomedical Science (IBMS), was quoted in The Telegraph as stating that labs “are trying to recruit biomedical scientists, but they are in short supply and the NHS is also looking. It is a competitive market.”4. Allan Wilson, President of the IBMS, told The Times that NHS labs did not have enough test kits, were struggling to source both kits and reagents and that he would, therefore, be “surprised” if the 100,000 target was met by the end of April.

The full paper is available to download below.SALT LAKE CITY, Sept. 09, 2020 (GLOBE NEWSWIRE) -- Health Catalyst, Inc. ("Health Catalyst", Nasdaq.

HCAT), a leading provider of data and analytics technology and services to healthcare organizations, today announced that Patrick Nelli, Chief Financial Officer, and Adam Brown, Senior Vice President, Investor Relations, will participate in the 2020 Cantor Global Virtual Healthcare Conference on Tuesday, September 15, 2020, which will include a fireside chat presentation at 1:20 p.m. ET. A live audio webcast and replay of this presentation will be available at https://ir.healthcatalyst.com/investor-relations.About Health CatalystHealth Catalyst is a leading provider of data and analytics technology and services to healthcare organizations committed to being the catalyst for massive, measurable, data-informed healthcare improvement.

Its customers leverage the cloud-based data platform—powered by data from more than 100 million patient records and encompassing trillions of facts—as well as its analytics software and professional services expertise to make data-informed decisions and realize measurable clinical, financial, and operational improvements. Health Catalyst envisions a future in which all healthcare decisions are data informed.Health Catalyst Investor Relations Contact:Adam BrownSenior Vice President, Investor Relations+1 (855)-309-6800ir@healthcatalyst.comHealth Catalyst Media Contact:Kristen BerryVice President, Public Relations+1 (617) 234-4123+1 (774) 573-0455 (m)kberry@we-worldwide.com Source. Health Catalyst, Inc..

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Start Preamble Centers kamagra oral jelly best price for Medicare &. Medicaid Services (CMS), HHS. Final rule kamagra oral jelly best price.

Correction. In the August 4, 2020 issue of the Federal Register, we published a final rule entitled “FY 2021 Inpatient Psychiatric Facilities Prospective Payment System (IPF PPS) and Special Requirements for Psychiatric Hospitals for Fiscal Year Beginning October 1, 2020 (FY kamagra oral jelly best price 2021)”. The August 4, 2020 final rule updates the prospective payment rates, the outlier threshold, and the wage index for Medicare inpatient hospital services provided by Inpatient Psychiatric Facilities (IPF), which include psychiatric hospitals and excluded psychiatric units of an Inpatient Prospective Payment System (IPPS) hospital or critical access hospital.

In addition, we adopted more recent Office of Management and Budget (OMB) statistical area delineations, and applied a 2-year transition for all providers negatively impacted by wage index changes. This correction document corrects the kamagra oral jelly best price statement of economic significance in the August 4, 2020 final rule. This correction is effective October 1, 2020.

Start Further kamagra oral jelly best price Info The IPF Payment Policy mailbox at IPFPaymentPolicy@cms.hhs.gov for general information. Nicolas Brock, (410) 786-5148, for information regarding the statement of economic significance. End Further Info End Preamble Start Supplemental Information I.

Background In kamagra oral jelly best price FR Doc. 2020-16990 (85 FR 47042), the final rule entitled “FY 2021 Inpatient Psychiatric Facilities Prospective Payment System (IPF PPS) and Special Requirements for Psychiatric Hospitals for Fiscal Year Beginning October 1, 2020 (FY 2021)” (hereinafter referred to as the FY 2021 IPF PPS final rule) there was an error in the statement of economic significance and status as major under the Congressional Review Act (5 U.S.C. 801 et kamagra oral jelly best price seq.).

Based on an estimated total impact of $95 million in increased transfers from the federal government to IPF providers, we previously stated that the final rule was not economically significant under Executive Order (E.O.) 12866, and that the rule was not a major rule under the Congressional Review Act. However, the Office of Management and Budget designated this rule as economically significant under E.O. 12866 and major kamagra oral jelly best price under the Congressional Review Act.

We are correcting our previous statement in the August 4, 2020 final rule accordingly. This correction is effective October 1, 2020 kamagra oral jelly best price. II.

Summary of Errors On page 47064, in the third column, the third full paragraph under B. Overall Impact should be kamagra oral jelly best price replaced entirely. The entire paragraph stating.

€œWe estimate that this rulemaking is not economically significant as measured by the $100 million threshold, and hence not a major rule under kamagra oral jelly best price the Congressional Review Act. Accordingly, we have prepared a Regulatory Impact Analysis that to the best of our ability presents the costs and benefits of the rulemaking.” should be replaced with. €œWe estimate that the total impact of this final rule is close to the $100 million threshold.

The Office of Management and Budget has designated this rule as economically kamagra oral jelly best price significant under E.O. 12866 and a major rule under the Congressional Review Act (5 U.S.C. 801 et kamagra oral jelly best price seq.).

Accordingly, we have prepared a Regulatory Impact Analysis that to the best of our ability presents the costs and benefits of the rulemaking.” III. Waiver of Proposed Rulemaking and Delay in Effective Date We ordinarily publish a notice of proposed rulemaking in the Federal Register to provide a period for public comment before the provisions of a rule take effect in accordance with section 553(b) of the Administrative Procedure Act (APA) (5 U.S.C. 553(b)).

However, we can waive this notice and comment procedure if the Secretary of the Department of Human Services finds, for good cause, that the notice and comment process is impracticable, unnecessary, or contrary to the public interest, and incorporates a statement of the finding and the reasons therefore in the notice. This correction document does not constitute a rulemaking that would be subject to these requirements because it corrects only the statement of economic significance included in the FY 2021 IPF PPS final rule. The corrections contained in this document are consistent with, and do not make substantive changes to, the policies and payment methodologies that were adopted and subjected to notice and comment procedures in the FY 2021 IPF PPS final rule.

Rather, the corrections made through this correction document are intended to ensure that the FY 2021 IPF PPS final rule accurately reflects OMB's determination about its economic significance and major status under the Congressional Review Act (CRA). Executive Order 12866 and CRA determinations are functions of the Office of Management and Budget, not the Department of Health and Human Services, and are not rules as defined by the Administrative Procedure Act (5 U.S. Code 551(4)).

We ordinarily provide a 60-day delay in the effective date of final rules after the date they are issued, in accordance with the CRA (5 U.S.C. 801(a)(3)). However, section 808(2) of the CRA provides that, if an agency finds good cause that notice and public procedure are impracticable, unnecessary, or contrary to the public interest, the rule shall take effect at such time as the agency determines.

Even if this were a rulemaking to which the delayed effective date requirement applied, we found, in the FY 2021 IPF PPS Final Rule (85 FR 47043), good cause to waive the 60-day delay in the effective date of the IPF PPS final rule. In the final rule, we explained that, due to CMS prioritizing efforts in support of containing and combatting the COVID-Start Printed Page 5292419 public health emergency by devoting significant resources to that end, the work needed on the IPF PPS final rule was not completed in accordance with our usual rulemaking schedule. We noted that it is critical, however, to ensure that the IPF PPS payment policies are effective on the first day of the fiscal year to which they are intended to apply and therefore, it would be contrary to the public interest to not waive the 60-day delay in the effective date.

Undertaking further notice and comment procedures to incorporate the corrections in this document into the FY 2021 IPF PPS final rule or delaying the effective date would be contrary to the public interest because it is in the public's interest to ensure that the policies finalized in the FY 2021 IPF PPS are effective as of the first day of the fiscal year to ensure providers and suppliers receive timely and appropriate payments. Further, such procedures would be unnecessary, because we are not altering the payment methodologies or policies. Rather, the correction we are making is only to indicate that the FY 2021 IPF PPS final rule is economically significant and a major rule under the CRA.

For these reasons, we find we have good cause to waive the notice and comment and effective date requirements. IV. Correction of Errors in the Preamble In FR Doc.

2020-16990, appearing on page 47042 in the Federal Register of Tuesday, August 4, 2020, the following correction is made. 1. On page 47064, in the 3rd column, under B.

Overall Impact, correct the third full paragraph to read as follows. We estimate that the total impact of this final rule is very close to the $100 million threshold. The Office of Management and Budget has designated this rule as economically significant under E.O.

12866 and a major rule under the Congressional Review Act (5 U.S.C. 801 et seq.). Accordingly, we have prepared a Regulatory Impact Analysis that to the best of our ability presents the costs and benefits of the rulemaking.

Start Signature Dated. August 24, 2020. Wilma M.

Robinson, Deputy Executive Secretary to the Department, Department of Health and Human Services. End Signature End Supplemental Information [FR Doc. 2020-18902 Filed 8-26-20.

Start Preamble kamagra pill cost Centers for Medicare &. Medicaid Services (CMS), HHS. Final rule kamagra pill cost. Correction.

In the August 4, 2020 issue of the Federal Register, we published a final rule entitled “FY 2021 Inpatient Psychiatric Facilities Prospective Payment kamagra pill cost System (IPF PPS) and Special Requirements for Psychiatric Hospitals for Fiscal Year Beginning October 1, 2020 (FY 2021)”. The August 4, 2020 final rule updates the prospective payment rates, the outlier threshold, and the wage index for Medicare inpatient hospital services provided by Inpatient Psychiatric Facilities (IPF), which include psychiatric hospitals and excluded psychiatric units of an Inpatient Prospective Payment System (IPPS) hospital or critical access hospital. In addition, we adopted more recent Office of Management and Budget (OMB) statistical area delineations, and applied a 2-year transition for all providers negatively impacted by wage index changes. This correction document corrects the statement of economic significance in the kamagra pill cost August 4, 2020 final rule.

This correction is effective October 1, 2020. Start Further Info The IPF Payment Policy mailbox kamagra pill cost at IPFPaymentPolicy@cms.hhs.gov for general information. Nicolas Brock, (410) 786-5148, for information regarding the statement of economic significance. End Further Info End Preamble Start Supplemental Information I.

Background In kamagra pill cost FR Doc. 2020-16990 (85 FR 47042), the final rule entitled “FY 2021 Inpatient Psychiatric Facilities Prospective Payment System (IPF PPS) and Special Requirements for Psychiatric Hospitals for Fiscal Year Beginning October 1, 2020 (FY 2021)” (hereinafter referred to as the FY 2021 IPF PPS final rule) there was an error in the statement of economic significance and status as major under the Congressional Review Act (5 U.S.C. 801 et seq.) kamagra pill cost. Based on an estimated total impact of $95 million in increased transfers from the federal government to IPF providers, we previously stated that the final rule was not economically significant under Executive Order (E.O.) 12866, and that the rule was not a major rule under the Congressional Review Act.

However, the Office of Management and Budget designated this rule as economically significant under E.O. 12866 and kamagra pill cost major under the Congressional Review Act. We are correcting our previous statement in the August 4, 2020 final rule accordingly. This correction kamagra pill cost is effective October 1, 2020.

II. Summary of Errors On page 47064, in the third column, the third full paragraph under B. Overall Impact should kamagra pill cost be replaced entirely. The entire paragraph stating.

€œWe estimate kamagra pill cost that this rulemaking is not economically significant as measured by the $100 million threshold, and hence not a major rule under the Congressional Review Act. Accordingly, we have prepared a Regulatory Impact Analysis that to the best of our ability presents the costs and benefits of the rulemaking.” should be replaced with. €œWe estimate that the total impact of this final rule is close to the $100 million threshold. The Office of Management and kamagra pill cost Budget has designated this rule as economically significant under E.O.

12866 and a major rule under the Congressional Review Act (5 U.S.C. 801 et kamagra pill cost seq.). Accordingly, we have prepared a Regulatory Impact Analysis that to the best of our ability presents the costs and benefits of the rulemaking.” III. Waiver of Proposed Rulemaking and Delay in Effective Date We ordinarily publish a notice of proposed rulemaking in the Federal Register to provide a period for public comment before the provisions of a rule take effect in accordance with section 553(b) of the Administrative Procedure Act (APA) (5 U.S.C.

553(b)). However, we can waive this notice and comment procedure if the Secretary of the Department of Human Services finds, for good cause, that the notice and comment process is impracticable, unnecessary, or contrary to the public interest, and incorporates a statement of the finding and the reasons therefore in the notice. This correction document does not constitute a rulemaking that would be subject to these requirements because it corrects only the statement of economic significance included in the FY 2021 IPF PPS final rule. The corrections contained in this document are consistent with, and do not make substantive changes to, the policies and payment methodologies that were adopted and subjected to notice and comment procedures in the FY 2021 IPF PPS final rule.

Rather, the corrections made through this correction document are intended to ensure that the FY 2021 IPF PPS final rule accurately reflects OMB's determination about its economic significance and major status under the Congressional Review Act (CRA). Executive Order 12866 and CRA determinations are functions of the Office of Management and Budget, not the Department of Health and Human Services, and are not rules as defined by the Administrative Procedure Act (5 U.S. Code 551(4)). We ordinarily provide a 60-day delay in the effective date of final rules after the date they are issued, in accordance with the CRA (5 U.S.C.

801(a)(3)). However, section 808(2) of the CRA provides that, if an agency finds good cause that notice and public procedure are impracticable, unnecessary, or contrary to the public interest, the rule shall take effect at such time as the agency determines. Even if this were a rulemaking to which the delayed effective date requirement applied, we found, in the FY 2021 IPF PPS Final Rule (85 FR 47043), good cause to waive the 60-day delay in the effective date of the IPF PPS final rule. In the final rule, we explained that, due to CMS prioritizing efforts in support of containing and combatting the COVID-Start Printed Page 5292419 public health emergency by devoting significant resources to that end, the work needed on the IPF PPS final rule was not completed in accordance with our usual rulemaking schedule.

We noted that it is critical, however, to ensure that the IPF PPS payment policies are effective on the first day of the fiscal year to which they are intended to apply and therefore, it would be contrary to the public interest to not waive the 60-day delay in the effective date. Undertaking further notice and comment procedures to incorporate the corrections in this document into the FY 2021 IPF PPS final rule or delaying the effective date would be contrary to the public interest because it is in the public's interest to ensure that the policies finalized in the FY 2021 IPF PPS are effective as of the first day of the fiscal year to ensure providers and suppliers receive timely and appropriate payments. Further, such procedures would be unnecessary, because we are not altering the payment methodologies or policies. Rather, the correction we are making is only to indicate that the FY 2021 IPF PPS final rule is economically significant and a major rule under the CRA.

For these reasons, we find we have good cause to waive the notice and comment and effective date requirements. IV. Correction of Errors in the Preamble In FR Doc. 2020-16990, appearing on page 47042 in the Federal Register of Tuesday, August 4, 2020, the following correction is made.

1. On page 47064, in the 3rd column, under B. Overall Impact, correct the third full paragraph to read as follows. We estimate that the total impact of this final rule is very close to the $100 million threshold.

The Office of Management and Budget has designated this rule as economically significant under E.O. 12866 and a major rule under the Congressional Review Act (5 U.S.C. 801 et seq.). Accordingly, we have prepared a Regulatory Impact Analysis that to the best of our ability presents the costs and benefits of the rulemaking.

Start Signature Dated. August 24, 2020. Wilma M. Robinson, Deputy Executive Secretary to the Department, Department of Health and Human Services.

End Signature End Supplemental Information [FR Doc. 2020-18902 Filed 8-26-20. 8:45 am]BILLING CODE 4120-01-P.

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Latest Prevention kamagra oral jelly 100mg canada & kamagra viagra. Wellness News kamagra viagra FRIDAY, Aug. 28, 2020 (HealthDay News) -- A warning about alcohol-based hand sanitizers in packaging that looks like food or drink has been issued by the U.S.

Food and Drug Administration."The agency has discovered that some hand sanitizers are being packaged in beer cans, children's food pouches, water bottles, juice bottles and vodka bottles," according to an FDA kamagra viagra a news release. "Additionally, the FDA has found hand sanitizers that contain food flavors, such as chocolate or raspberry."Reports received by the FDA include a person who bought what they believed was drinking water but was actually hand sanitizer, and a hand sanitizer using children's cartoons in marketing and sold in a pouch that resembled a snack, CNN reported."I am increasingly concerned about hand sanitizer being packaged to appear to be consumable products, such as baby food or beverages. These products could confuse consumers into accidentally ingesting a kamagra viagra potentially deadly product.

It's dangerous to add scents with food flavors to hand sanitizers which children could think smells like food, eat and get alcohol poisoning," FDA Commissioner Dr. Stephen Hahn said in the release.Copyright © kamagra viagra 2019 HealthDay. All rights reserved kamagra viagra.

QUESTION According to the USDA, there is no difference between a “portion” and a “serving.” See AnswerLatest Cancer News By Steven ReinbergHealthDay ReporterTHURSDAY, Aug. 27, 2020 (HealthDay News)Cancer patients who need radiation therapy shouldn't let fear of COVID-19 delay their treatment, one hospital study suggests.Over six days in May, during the height of the pandemic in New Jersey, surfaces in the radiation oncology department at Robert Wood Johnson University Hospital in New Brunswick, N.J., were tested for COVID-19 before kamagra viagra cleaning.Of 128 samples taken in patient and staff areas and from equipment, including objects used by a patient with COVID-19, not one was positive for SARS-CoV-2, the virus that causes COVID-19, the study found.Patients can be reassured that surface contamination is minimal and necessary cancer treatment can go forward safely, said lead researcher Dr. Bruce Haffty, chairman of radiation oncology at Rutgers Cancer Institute in New Brunswick."Cancer care should and must continue in a COVID pandemic, and it can be delivered safely and effectively with minimal risk of acquiring a COVID infection from the radiation oncology environment, provided routine measures like mask-wearing, hand-washing, distancing and screening are in place and adhered to," Haffty said.The study does have some limitations.

Because of kamagra viagra the nature of environmental sampling, 100% of a surface could not be swabbed for analysis. And no air samples were taken. But Haffty said that kamagra viagra because no virus was found on surfaces, it's doubtful that any virus was present in the air."An important thing is that we did this testing before cleaning crews came in at the end of the day when there had been all kinds of traffic with patients and staff moving back and forth," he said.Patients and staff routinely wore masks, maintained social distance and washed their hands often, which is probably why no virus was found, Haffty said.Patients also were screened on arrival with temperature checks and questioned about virus symptoms, he added.Dr.

Anthony D'Amico is chief of radiation kamagra viagra oncology at Brigham and Women's Hospital in Boston. He said, "This study corroborates what we have found."Overall, his hospital's infection rate is 2%, while that in the community next to the hospital is 9%, D'Amico said. But where there are people with lots of underlying conditions and less access to health care, kamagra viagra the infection rate is 33%, he said."Hospitals seem to be safer right now than public settings -- protocols that people are using are working," D'Amico said.The takeaway.

Patients need not put off treatment out of concern that they could be infected in the hospital."We have told patients not to delay radiation because of COVID-19, because cancer can be more life-threatening than COVID," he said.D'Amico's hospital treats patients diagnosed with COVID-19 who need radiation before other patients arrive in the morning. The department is cleaned after they leave and at the end of the day after all other patients have gone, he said.Patients with COVID-19 symptoms must test negative before undergoing screening tests like mammography and colonoscopy, D'Amico added.In kamagra viagra the waiting room, patients and staff wear masks and maintain distancing. Patients' temperatures are taken and they are asked about any symptoms, he said."Patients should feel safe that the person sitting next to them in a waiting room has been properly screened," D'Amico said.The findings were published online Aug.

27 in JAMA Oncology.Copyright © kamagra viagra 2020 HealthDay. All rights kamagra viagra reserved. SLIDESHOW Skin Cancer Symptoms, Types, Images See Slideshow References SOURCES.

Bruce Haffty, MD, associate kamagra viagra vice chancellor, cancer programs, and chair, radiation oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, N.J.. Anthony D'Amico, MD, PhD, professor, radiation oncology, Harvard Medical School, and chief, genitourinary radiation oncology, Brigham and Woman's Hospital, Boston. JAMA Oncology, kamagra viagra Aug.

27, 2020, onlineLatest Heart News THURSDAY, Aug. 27, 2020 (HealthDay News)Heart attack survivors are more likely to lose weight if their spouses join them in shedding excess pounds, new research shows."Lifestyle improvement after a heart attack is a crucial part of preventing repeat events," said study author Lotte Verweij, a registered kamagra viagra nurse and Ph.D. Student at Amsterdam University of Applied Sciences, in the kamagra viagra Netherlands.

"Our study shows that when spouses join the effort to change habits, patients have a better chance of becoming healthier -- particularly when it comes to losing weight."The study included 411 heart attack survivors who, along with receiving usual care, were referred to up to three lifestyle change programs for weight loss, increased physical activity and quitting smoking.The patients' partners could attend the programs for free and were encouraged by nurses to take part. Nearly half (48%) of the patients' partners participated, which was defined as attending at least once.Compared to those without a partner, patients with kamagra viagra a participating partner were more than twice as likely to improve in at least one of the three areas (weight loss, exercise, smoking cessation) within a year, the findings showed.When the influence of partners was analyzed in the three areas separately, patients with a participating partner were more successful in shedding weight compared to patients without a partner, according to the study presented Thursday at a virtual meeting of the European Society of Cardiology. Such research is considered preliminary until published in a peer-reviewed journal.But partner participation did not improve heart attack survivors' likelihood of quitting smoking or becoming more physically active, according to the report."Patients with partners who joined the weight-loss program lost more weight compared to patients with a partner who did not join the program," Verweij said in a society news release."Couples often have comparable lifestyles, and changing habits is difficult when only one person is making the effort.

Practical issues come into play, such as grocery shopping, kamagra viagra but also psychological challenges, where a supportive partner may help maintain motivation," she explained.-- Robert PreidtCopyright © 2020 HealthDay. All rights reserved. QUESTION In the U.S., 1 in every 4 kamagra viagra deaths is caused by heart disease.

See Answer kamagra viagra References SOURCE. European Society of Cardiology, news release, Aug. 27, 2020Latest Healthy Kids kamagra viagra News THURSDAY, Aug.

27, 2020 (HealthDay News)If your child will be doing online learning this school year, you need to take steps to protect them from eye strain, the American Academy of Ophthalmology says."I really have seen a marked increase in kids suffering from eye strain because of increased screen time. Good news is most symptoms can be avoided by taking a few simple steps," pediatric ophthalmologist Dr kamagra viagra. Stephen Lipsky, a clinical spokesperson for the academy, said in an academy news release.Here he offers these remote-learning recommendations to protect your child's vision:Set a timer to remind your child to take a break every 20 minutes.

Alternate reading on an e-book kamagra viagra with a real book. Encourage children to look up and out the window every kamagra viagra two chapters or to shut their eyes for 20 seconds.Mark books with paperclips every few chapters. When they reach a paper clip, it will remind them look up.

On an e-book, use the bookmark function for the same effect.Make sure children use laptops kamagra viagra at arm's length (about 18 to 24 inches) from where they're sitting. Ideally, they should have a monitor positioned at eye level, directly in front of the body. Tablets should kamagra viagra also be held at arm's length.To reduce glare, position the light source behind the child's back, not behind the screen.

Adjust the brightness and contrast on the screen so that it feels comfortable for children. Don't use a device outside kamagra viagra or in brightly lit areas. The glare on the screen can cause eye strain.Children shouldn't https://www.epide.fr/can-u-buy-kamagra-over-the-counter/ use a device in a kamagra viagra dark room.

As the pupil expands to adjust to the darkness, the brightness of the screen can aggravate after-images and cause discomfort.Children should stop using devices 30 to 60 minutes before bedtime. Blue light kamagra viagra may disrupt sleep. If teens don't want to do this, have them switch to night mode or a similar mode to reduce blue light exposure.When study time is over, make sure children spend time outdoors.

Several studies kamagra viagra suggest that spending time outdoors, especially in early childhood, can slow the progression of nearsightedness.-- Robert PreidtCopyright © 2020 HealthDay. All rights reserved. QUESTION What kamagra viagra causes dry eyes?.

See kamagra viagra Answer References SOURCE. American Academy of Ophthalmology, news release, Aug. 13, 2020Latest Heart News THURSDAY, Aug kamagra viagra.

27, 2020 (American Heart Association News)"Something's not right," Marranda Edwards told her aunt in San Antonio. "I'm coming kamagra viagra there."Edwards, who lives outside of Atlanta, had been worried for several days. Her mother, Alvis Whitlow, hadn't been calling as often as usual, which could easily be five times a day.

And when they did speak, Whitlow sounded confused and weak.In late March, a call from Edwards' aunt added to her suspicions kamagra viagra. The aunt reported kamagra viagra that Whitlow had gastrointestinal problems and couldn't walk to the bathroom without assistance. That's when Edwards knew she needed to act.Edwards took the first flight she could find, with her husband staying home to take care of their three children and six foster children.On the way to Texas, Edwards thought about the last time she sensed something was seriously wrong with her mom.

It was in 2003, when she too lived in San Antonio.Someone from kamagra viagra the beauty shop where Whitlow was getting her hair done called to say her mother had thrown up and felt weak. This stood out because for much of that week, her mom complained of having a headache, which was unusual."Something's not right," Edwards told the woman at the beauty shop. "I'm coming there."Edwards called an ambulance kamagra viagra to check on her mom.

As paramedics examined Whitlow, her heart stopped.At the hospital, doctors determined that an aneurysm burst in her brain, leading to bleeding. They believed it was caused by undiagnosed hypertension kamagra viagra. She needed kamagra viagra to undergo a procedure to stop the bleeding.

The chance of survival was 20%, doctors told Edwards.The procedure worked. And the damage wasn't as severe as feared.After kamagra viagra two months of rehabilitation, Whitlow returned to work. She retired four years later, in 2007, at age 53, after nearly three decades with the San Antonio school system.Since then, Whitlow remained active and healthy, spending time with friends, family and church activities.

She also visited Edwards and her family several times a year.Having arrived in San Antonio for the urgent visit, the first thing Edwards kamagra viagra noticed was how weak her mother seemed.Whitlow also was coughing. By the next day, it sounded like wheezing."I thought it might be bronchitis, but it started sounding worse," Edwards said.When a trip from the living room to the bedroom left Whitlow out of breath, Edwards called 911.Paramedics measured her temperature at 102 and her blood oxygen level at 87% instead of in the usual high 90s."Then I just knew it," Edwards said. "She's got it kamagra viagra.

She's got the coronavirus."Edwards kamagra viagra followed the ambulance to the hospital but wasn't allowed inside. The next day, the doctor called, confirming Whitlow had COVID-19 and saying she was on a ventilator. He said she'd also need to be transferred to a hospital set up kamagra viagra for COVID patients."I need you to prepare," the doctor told Edwards.

"The patients we've seen with her age and history and how she presented, she only has a 20% chance of living."Edwards thought. "Here it was again kamagra viagra. A 20% chance."Whitlow spent more than two weeks on a ventilator.

Doctors tried to remove her from the ventilator twice, but each time she needed kamagra viagra the mechanical help again within eight hours."You have to make a serious decision," doctors told Edwards.The options. Insert a breathing tube, perhaps permanently, and go to a long-term acute care facility, or stay kamagra viagra in the hospital – but when the ventilator is removed, it won't be put back in place.Edwards drove to the hospital, sat on the curb to be as close to her mother as possible. Then she began praying."What do I do?.

" she kamagra viagra thought. "What do I do?. "Edwards called the hospital with her decision.Put in the kamagra viagra tube.Whitlow was transferred to a hospital that specializes in weaning patients off ventilators.

Although Edwards still couldn't be with her mom, they could smile, wave and blow kisses through a window. After her breathing tube was removed, they could again talk on the phone.On May 11, after 27 days of acute care and a total of 24 days on kamagra viagra a ventilator, Whitlow went home. Leaving the hospital, she refused a wheelchair, allowing her to walk into Edwards' waiting arms for their first hug in six weeks.

Hospital staffers surrounded them, cheering their reunion."I didn't expect all that applause," Whitlow said. "It made me feel really good, just blessed."The next day, a parade of more than 100 family, sorority and church members drove by to celebrate her recovery.Edwards, who is an assistant principal at a middle school, brought Whitlow back with her to Georgia. She arrived to more fanfare – a huge yard sign and cheering family members."God blessed me to be alive and to have someone here like Marranda to take care of me," Whitlow said.

"Without her, I don't know what I would have done."American Heart Association News covers heart and brain health. Not all views expressed in this story reflect the official position of the American Heart Association. Copyright is owned or held by the American Heart Association, Inc., and all rights are reserved.

SLIDESHOW Stroke Causes, Symptoms, and Recovery See Slideshow.

Latest Prevention kamagra pill cost & he said. Wellness News kamagra pill cost FRIDAY, Aug. 28, 2020 (HealthDay News) -- A warning about alcohol-based hand sanitizers in packaging that looks like food or drink has been issued by the U.S. Food and Drug Administration."The agency has discovered that some hand sanitizers are being packaged in beer cans, children's food pouches, water bottles, juice bottles and vodka bottles," according to an FDA a kamagra pill cost news release. "Additionally, the FDA has found hand sanitizers that contain food flavors, such as chocolate or raspberry."Reports received by the FDA include a person who bought what they believed was drinking water but was actually hand sanitizer, and a hand sanitizer using children's cartoons in marketing and sold in a pouch that resembled a snack, CNN reported."I am increasingly concerned about hand sanitizer being packaged to appear to be consumable products, such as baby food or beverages.

These products could confuse consumers into accidentally ingesting a potentially deadly product kamagra pill cost. It's dangerous to add scents with food flavors to hand sanitizers which children could think smells like food, eat and get alcohol poisoning," FDA Commissioner Dr. Stephen Hahn said kamagra pill cost in the release.Copyright © 2019 HealthDay. All rights kamagra pill cost reserved. QUESTION According to the USDA, there is no difference between a “portion” and a “serving.” See AnswerLatest Cancer News By Steven ReinbergHealthDay ReporterTHURSDAY, Aug.

27, 2020 (HealthDay News)Cancer patients who need radiation therapy shouldn't let fear of COVID-19 delay their treatment, one hospital study suggests.Over six days in May, during the height of the pandemic in New Jersey, surfaces in the radiation oncology department at Robert Wood Johnson University Hospital in New Brunswick, N.J., were tested for COVID-19 before cleaning.Of 128 samples taken in patient and staff areas and from equipment, including objects used by a patient with COVID-19, not one was positive for SARS-CoV-2, the virus that causes COVID-19, the study found.Patients can be reassured that surface contamination is minimal and necessary cancer treatment can go forward safely, said lead researcher kamagra pill cost Dr. Bruce Haffty, chairman of radiation oncology at Rutgers Cancer Institute in New Brunswick."Cancer care should and must continue in a COVID pandemic, and it can be delivered safely and effectively with minimal risk of acquiring a COVID infection from the radiation oncology environment, provided routine measures like mask-wearing, hand-washing, distancing and screening are in place and adhered to," Haffty said.The study does have some limitations. Because of the nature of environmental sampling, 100% kamagra pill cost of a surface could not be swabbed for analysis. And no air samples were taken. But Haffty said that because no virus was found on surfaces, it's doubtful that any virus was present in the air."An important thing is that we did this testing before cleaning crews came in at the end of the day when there had been all kinds of traffic with patients and staff moving back and forth," he said.Patients and staff routinely wore masks, maintained social distance and washed their hands often, which is probably why no virus was found, Haffty said.Patients kamagra pill cost also were screened on arrival with temperature checks and questioned about virus symptoms, he added.Dr.

Anthony D'Amico is chief of radiation oncology at kamagra pill cost Brigham and Women's Hospital in Boston. He said, "This study corroborates what we have found."Overall, his hospital's infection rate is 2%, while that in the community next to the hospital is 9%, D'Amico said. But where there are people with lots of underlying conditions and less access to health care, the infection rate is 33%, kamagra pill cost he said."Hospitals seem to be safer right now than public settings -- protocols that people are using are working," D'Amico said.The takeaway. Patients need not put off treatment out of concern that they could be infected in the hospital."We have told patients not to delay radiation because of COVID-19, because cancer can be more life-threatening than COVID," he said.D'Amico's hospital treats patients diagnosed with COVID-19 who need radiation before other patients arrive in the morning. The department is cleaned after they leave and at the end of the day after all other patients have gone, he said.Patients with COVID-19 symptoms must test negative before kamagra pill cost undergoing screening tests like mammography and colonoscopy, D'Amico added.In the waiting room, patients and staff wear masks and maintain distancing.

Patients' temperatures are taken and they are asked about any symptoms, he said."Patients should feel safe that the person sitting next to them in a waiting room has been properly screened," D'Amico said.The findings were published online Aug. 27 in kamagra pill cost JAMA Oncology.Copyright © 2020 HealthDay. All rights kamagra pill cost reserved. SLIDESHOW Skin Cancer Symptoms, Types, Images See Slideshow References SOURCES. Bruce Haffty, MD, kamagra pill cost associate vice chancellor, cancer programs, and chair, radiation oncology, Rutgers Cancer Institute of New Jersey, New Brunswick, N.J..

Anthony D'Amico, MD, PhD, professor, radiation oncology, Harvard Medical School, and chief, genitourinary radiation oncology, Brigham and Woman's Hospital, Boston. JAMA Oncology, kamagra pill cost Aug. 27, 2020, onlineLatest Heart News THURSDAY, Aug. 27, 2020 (HealthDay News)Heart attack survivors are more likely to lose weight if their spouses join them in shedding excess pounds, new kamagra pill cost research shows."Lifestyle improvement after a heart attack is a crucial part of preventing repeat events," said study author Lotte Verweij, a registered nurse and Ph.D. Student at Amsterdam University of Applied Sciences, in kamagra pill cost the Netherlands.

"Our study shows that when spouses join the effort to change habits, patients have a better chance of becoming healthier -- particularly when it comes to losing weight."The study included 411 heart attack survivors who, along with receiving usual care, were referred to up to three lifestyle change programs for weight loss, increased physical activity and quitting smoking.The patients' partners could attend the programs for free and were encouraged by nurses to take part. Nearly half (48%) of the patients' partners participated, which was kamagra pill cost defined as attending at least once.Compared to those without a partner, patients with a participating partner were more than twice as likely to improve in at least one of the three areas (weight loss, exercise, smoking cessation) within a year, the findings showed.When the influence of partners was analyzed in the three areas separately, patients with a participating partner were more successful in shedding weight compared to patients without a partner, according to the study presented Thursday at a virtual meeting of the European Society of Cardiology. Such research is considered preliminary until published in a peer-reviewed journal.But partner participation did not improve heart attack survivors' likelihood of quitting smoking or becoming more physically active, according to the report."Patients with partners who joined the weight-loss program lost more weight compared to patients with a partner who did not join the program," Verweij said in a society news release."Couples often have comparable lifestyles, and changing habits is difficult when only one person is making the effort. Practical issues come into play, such as grocery shopping, but also psychological challenges, where kamagra pill cost a supportive partner may help maintain motivation," she explained.-- Robert PreidtCopyright © 2020 HealthDay. All rights reserved.

QUESTION In the U.S., 1 in every 4 deaths is caused by heart kamagra pill cost disease. See Answer kamagra pill cost References SOURCE. European Society of Cardiology, news release, Aug. 27, 2020Latest Healthy Kids kamagra pill cost News THURSDAY, Aug. 27, 2020 (HealthDay News)If your child will be doing online learning this school year, you need to take steps to protect them from eye strain, the American Academy of Ophthalmology says."I really have seen a marked increase in kids suffering from eye strain because of increased screen time.

Good news is most symptoms can be avoided by taking a few simple steps," pediatric ophthalmologist kamagra pill cost Dr. Stephen Lipsky, a clinical spokesperson for the academy, said in an academy news release.Here he offers these remote-learning recommendations to protect your child's vision:Set a timer to remind your child to take a break every 20 minutes. Alternate reading on kamagra pill cost an e-book with a real book. Encourage children to look up and out the window every two chapters or to shut their eyes for 20 seconds.Mark books with paperclips every kamagra pill cost few chapters. When they reach a paper clip, it will remind them look up.

On an e-book, use the bookmark function for the same effect.Make sure children use laptops kamagra pill cost at arm's length (about 18 to 24 inches) from where they're sitting. Ideally, they should have a monitor positioned at eye level, directly in front of the body. Tablets should also be held at arm's length.To kamagra pill cost reduce glare, position the light source behind the child's back, not behind the screen. Adjust the brightness and contrast on the screen so that it feels comfortable for children. Don't use kamagra pill cost a device outside or in brightly lit areas.

The glare on the screen kamagra pill cost can cause eye strain.Children shouldn't use a device in a dark https://www.epide.fr/cheap-kamagra-tablets/ room. As the pupil expands to adjust to the darkness, the brightness of the screen can aggravate after-images and cause discomfort.Children should stop using devices 30 to 60 minutes before bedtime. Blue light may disrupt sleep kamagra pill cost. If teens don't want to do this, have them switch to night mode or a similar mode to reduce blue light exposure.When study time is over, make sure children spend time outdoors. Several studies suggest that spending kamagra pill cost time outdoors, especially in early childhood, can slow the progression of nearsightedness.-- Robert PreidtCopyright © 2020 HealthDay.

All rights reserved. QUESTION What kamagra pill cost causes dry eyes?. See Answer References kamagra pill cost SOURCE. American Academy of Ophthalmology, news release, Aug. 13, 2020Latest Heart kamagra pill cost News THURSDAY, Aug.

27, 2020 (American Heart Association News)"Something's not right," Marranda Edwards told her aunt in San Antonio. "I'm coming there."Edwards, kamagra pill cost who lives outside of Atlanta, had been worried for several days. Her mother, Alvis Whitlow, hadn't been calling as often as usual, which could easily be five times a day. And when they did speak, Whitlow sounded confused and weak.In late March, a call from Edwards' aunt added kamagra pill cost to her suspicions. The aunt kamagra pill cost reported that Whitlow had gastrointestinal problems and couldn't walk to the bathroom without assistance.

That's when Edwards knew she needed to act.Edwards took the first flight she could find, with her husband staying home to take care of their three children and six foster children.On the way to Texas, Edwards thought about the last time she sensed something was seriously wrong with her mom. It was in 2003, when she too lived in San Antonio.Someone from the beauty shop where Whitlow was getting her hair done called to say her mother had thrown kamagra pill cost up and felt weak. This stood out because for much of that week, her mom complained of having a headache, which was unusual."Something's not right," Edwards told the woman at the beauty shop. "I'm coming there."Edwards called an ambulance to check on her mom kamagra pill cost. As paramedics examined Whitlow, her heart stopped.At the hospital, doctors determined that an aneurysm burst in her brain, leading to bleeding.

They believed it was caused by undiagnosed kamagra pill cost hypertension. She needed to undergo a procedure to stop kamagra pill cost the bleeding. The chance of survival was 20%, doctors told Edwards.The procedure worked. And the damage wasn't as severe as kamagra pill cost feared.After two months of rehabilitation, Whitlow returned to work. She retired four years later, in 2007, at age 53, after nearly three decades with the San Antonio school system.Since then, Whitlow remained active and healthy, spending time with friends, family and church activities.

She also visited Edwards and her family several times a year.Having arrived in San Antonio for the urgent kamagra pill cost visit, the first thing Edwards noticed was how weak her mother seemed.Whitlow also was coughing. By the next day, it sounded like wheezing."I thought it might be bronchitis, but it started sounding worse," Edwards said.When a trip from the living room to the bedroom left Whitlow out of breath, Edwards called 911.Paramedics measured her temperature at 102 and her blood oxygen level at 87% instead of in the usual high 90s."Then I just knew it," Edwards said. "She's got it kamagra pill cost. She's got the coronavirus."Edwards followed kamagra pill cost the ambulance to the hospital but wasn't allowed inside. The next day, the doctor called, confirming Whitlow had COVID-19 and saying she was on a ventilator.

He said she'd also need to be transferred to a hospital kamagra pill cost set up for COVID patients."I need you to prepare," the doctor told Edwards. "The patients we've seen with her age and history and how she presented, she only has a 20% chance of living."Edwards thought. "Here it kamagra pill cost was again. A 20% chance."Whitlow spent more than two weeks on a ventilator. Doctors tried kamagra pill cost to remove her from the ventilator twice, but each time she needed the mechanical help again within eight hours."You have to make a serious decision," doctors told Edwards.The options.

Insert a breathing tube, perhaps permanently, and go to a long-term acute care facility, or stay in the hospital – but when the ventilator is removed, it won't be put back in place.Edwards drove to the hospital, sat on the curb to be as close kamagra pill cost to her mother as possible. Then she began praying."What do I do?. " she thought kamagra pill cost. "What do I do?. "Edwards called the hospital with her decision.Put in the tube.Whitlow was kamagra pill cost transferred to a hospital that specializes in weaning patients off ventilators.

Although Edwards still couldn't be with her mom, they could smile, wave and blow kisses through a window. After her breathing tube was removed, they could again talk on the phone.On May 11, after 27 days of acute care and a total of 24 days on kamagra pill cost a ventilator, Whitlow went home. Leaving the hospital, she refused a wheelchair, allowing her to walk into Edwards' waiting arms for their first hug in six weeks. Hospital staffers surrounded them, cheering their reunion."I didn't expect all that applause," Whitlow said. "It made me feel really good, just blessed."The next day, a parade of more than 100 family, sorority and church members drove by to celebrate her recovery.Edwards, who is an assistant principal at a middle school, brought Whitlow back with her to Georgia.

She arrived to more fanfare – a huge yard sign and cheering family members."God blessed me to be alive and to have someone here like Marranda to take care of me," Whitlow said. "Without her, I don't know what I would have done."American Heart Association News covers heart and brain health. Not all views expressed in this story reflect the official position of the American Heart Association. Copyright is owned or held by the American Heart Association, Inc., and all rights are reserved. SLIDESHOW Stroke Causes, Symptoms, and Recovery See Slideshow.

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The role of personality in health has image source been under speculation for kamagra gel oral decades. The rise of coherent kamagra 50mg oral jelly theories of personality and the inclusion of modern personality trait measures in large-scale epidemiological studies has kamagra gel oral only rather recently enabled to examine this question profoundly. Numerous studies have shown that from the five major personality traits, conscientiousness—describing individual differences, for example, in self-regulation, orderliness and carefulness—has emerged as maybe the most important personality factor in lifespan health with low consciousness being associated with a wide range of measures of health and well-being,1 including reduced life expectancy.2 This has sparked several calls highlighting the policy relevance of personality traits.3 4 However, personality traits are typically not included in health guidelines, and the potential causality between personality traits and health outcomes has remained inconclusive.The study by Singh-Manoux et al5 makes an important contribution ….

The role of kamagra pill cost personality go to my site in health has been under speculation for decades. The rise kamagra pill cost of coherent theories of personality and the inclusion of modern personality trait measures in large-scale epidemiological studies has only rather recently enabled to examine this question profoundly. Numerous studies have shown that from the five major personality traits, conscientiousness—describing individual differences, for example, in self-regulation, orderliness and carefulness—has emerged as maybe the most important personality factor in lifespan health with low consciousness being associated with a wide range of measures of health and well-being,1 including reduced life expectancy.2 This has sparked several calls highlighting the policy relevance of personality traits.3 4 However, personality traits are typically not included in health guidelines, and the potential causality between personality traits and health outcomes has remained inconclusive.The study by Singh-Manoux et al5 makes an important contribution ….

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IntroductionIn recent years, many studies have been published on new diagnostic possibilities and management approaches in cohorts of kamagra store coupon code patients suspected to have a disorder/difference of sex development (DSD).1–13 Based on these studies, it has become clear that services and institutions still differ in the composition of the multidisciplinary teams that provide care for patients who have a DSD.11 14 Several projects have now worked to kamagra oral jelly price resolve this variability in care. The European Cooperation in Science and Technology (EU COST) action BM1303 ‘A systematic elucidation of differences of sex development’ has been a platform to achieve European agreement on harmonisation of clinical management and laboratory practices.15–17 Another such kamagra oral jelly price initiative involved an update of the 2006 DSD consensus document by an international group of professionals and patient representatives.18 These initiatives have highlighted how cultural and financial aspects and the availability of resources differ significantly between countries and societies, a situation that hampers supranational agreement on common diagnostic protocols. As only a few national guidelines have been published in international journals, comparison of these guidelines is difficult even though such a comparison is necessary to capture the differences and initiate actions to overcome them.

Nonetheless, four DSD (expert) centres located in the Netherlands and Flanders (the Dutch-speaking Northern part of kamagra oral jelly price Belgium) have collaborated to produce a detailed guideline on diagnostics in DSD.19 This shows that a supranational guideline can be a reasonable approach for countries with similarly structured healthcare systems and similar resources. Within the guideline there is agreement that optimisation of expertise and care can be achieved through centralisation, for example, by limiting analysis of next-generation sequencing (NGS)-based diagnostic panels to only a few centres and by centralising pathological review of gonadal tissues. International networks such as the European Reference Network for rare endocrine conditions (EndoERN), in which DSD is embedded, may facilitate the expansion of kamagra oral jelly price this kind of collaboration across Europe.This paper highlights key discussion points in the Dutch-Flemish guideline that have been insufficiently addressed in the literature thus far because they reflect evolving technologies or less visible stakeholders.

For example, prenatal observation of an atypical aspect of the genitalia indicating a possible DSD is becoming increasingly common, and we discuss appropriate counselling and a diagnostic approach for these cases, including the option of using NGS-based genetic testing. So far, little attention has been paid to this process.20 21 Furthermore, informing patients and/or their parents about atypical sex development and why this may warrant referral to a kamagra oral jelly price specialised team may be challenging, especially for professionals with limited experience in DSD.22 23 Therefore, a section of the Dutch-Flemish guideline was written for these healthcare providers. Moreover, this enables DSD specialists to refer to the guideline when advising a referral.

Transition from kamagra oral jelly price the prenatal to the postnatal team and from the paediatric to the adult team requires optimal communication between the specialists involved. Application of NGS-based techniques may lead to a higher diagnostic yield, providing a molecular genetic diagnosis in previously unsolved cases.16 We address the timing of this testing and the problems associated with this technique such as the interpretation of variants of unknown clinical significance (VUS). Similarly, histopathological interpretation and classification of removed gonadal tissue is challenging and would benefit from international collaboration and centralisation of expertise.MethodsFor the guideline revision, an interdisciplinary multicentre group was formed with all members responsible for updating the literature kamagra oral jelly price for a specific part of the guideline.

Literature search in PubMed was not systematic, but rather intended to be broad in order to cover all areas and follow expert opinions. This approach is more in line with the Clinical Practice Advisory Document method described by Burke et al24 for guidelines involving genetic practice because it is often troublesome to substantiate such guidelines with sufficient evidence due to the kamagra oral jelly price rapid changes in testing methods, for example, gene panels. All input provided by the group was synthesised by the chairperson (YvB), who also reviewed abstracts of papers on DSD published between 2010 and September 2017 for the guideline and up to October 2019 for this paper.

Abstracts had to be written in English and were identified using a broad range of Medical Subject Headings terms (eg, DSD, genetic, review, diagnosis, diagnostics, 46,XX kamagra oral jelly price DSD, 46,XY DSD, guideline, multidisciplinary care). Next, potentially relevant papers on diagnostic procedures in DSD were selected. Case reports kamagra oral jelly price were excluded, as were articles that were not open access or retrievable through institutional access.

Based on this, a draft guideline was produced that was in line with the international principles of good diagnostic care in DSD. This draft was discussed by the writing committee and, after having kamagra oral jelly price obtained agreement on remaining points of discussion, revised into a final draft. This version was sent to a broad group of professionals from academic centres and DSD teams whose members had volunteered to review the draft guideline.

After receiving and incorporating their input, the final version was presented to the paediatric and genetic associations kamagra oral jelly price for approval. After approval by the members of the paediatric (NVK), clinical genetic (VKGN) and genetic laboratory (VKGL) associations, the guideline was published on their respective websites.19 Although Turner syndrome and Klinefelter syndrome are considered to be part of the DSD spectrum, they are not extensively discussed in this diagnostic guideline as guidelines dedicated to these syndromes already exist.25 26 However, some individuals with Turner syndrome or Klinefelter syndrome may present with ambiguous or atypical genitalia and may therefore initially follow the DSD diagnostic process.Guideline highlightsPrenatal settingPresentationThe most frequent prenatal presentation of a DSD condition is atypical genitalia found on prenatal ultrasound as an isolated finding or in combination with other structural anomalies. This usually occurs after the 20-week routine medical ultrasound for screening of congenital anomalies, but may also occur earlier, for example, when a commercial ultrasound is performed at the request of the parents.Another way DSD can be diagnosed before birth is when invasive prenatal genetic testing carried kamagra oral jelly price out for a different reason, for example, due to suspicion of other structural anomalies, reveals a discrepancy between the genotypic sex and the phenotypic sex seen by ultrasound.

In certified laboratories, the possibility of a sample switch is extremely low but should be ruled out immediately. More often, the discrepancy will be due to sex-chromosome mosaicism or a true form of DSD.A situation now occurring with increasing frequency is a discrepancy between the genotypic sex revealed by non-invasive prenatal testing (NIPT), which is now kamagra oral jelly price available to high-risk pregnant women in the Netherlands and to all pregnant women in Belgium, and later ultrasound findings. NIPT screens for CNVs in the fetus.

However, depending kamagra oral jelly price on legal restrictions and/or ethical considerations, the X and Y chromosomes are not always included in NIPT analysis and reports. If the X and Y chromosomes are included, it is important to realise that the presence of a Y-chromosome does not necessarily imply male fetal development. At the time that NIPT is performed (usually 11–13 weeks), genital development cannot be reliably appreciated by ultrasound, so any discrepancy or atypical aspect of the genitalia will only be noticed later in pregnancy and should prompt kamagra oral jelly price further evaluation.Counselling and diagnosticsIf a DSD is suspected, first-line sonographers and obstetricians should refer the couple to their colleague prenatal specialists working with or in a DSD team.

After confirming an atypical genital on ultrasound, the specialist team should offer the couple a referral for genetic counselling to discuss the possibility of performing invasive prenatal testing (usually an amniocentesis) to identify an underlying cause that fits the ultrasound findings.22 23 To enable the parents to make a well-informed decision, prenatal counselling should, in our opinion, include. Information on the ultrasound findings and the limitations of this technique kamagra oral jelly price. The procedure(s) that can be followed, including the risks associated with an amniocentesis.

And the type of information genetic kamagra oral jelly price testing can and cannot provide. Knowing which information has been provided and what words have been used by the prenatal specialist is very helpful for those involved in postnatal care.It is important that parents understand that the biological sex of a baby is determined by a complex interplay of chromosomes, genes and hormones, and thus that assessment of the presence or absence of a Y-chromosome alone is insufficient to assign the sex of their unborn child or, as in any unborn child, say anything about the child’s future gender identity.Expecting parents can be counselled by the clinical geneticist and the psychologist from the DSD team, although other DSD specialists can also be involved. The clinical geneticist kamagra oral jelly price should be experienced in prenatal counselling and well informed about the diagnostic possibilities given the limited time span in which test results need to be available to allow parents to make a well-informed decision about whether or not to continue the pregnancy.

Termination of pregnancy can be considered, for instance, in a syndromic form of DSD with multiple malformations, but when the DSD occurs as an apparently isolated condition, expecting parents may also consider termination of pregnancy, which, although considered controversial by some, is legal in kamagra oral jelly price Belgium and the Netherlands. The psychologist of the DSD team can support parents during and after pregnancy and help them cope with feelings of uncertainty and eventual considerations of a termination of pregnancy, as well as with practical issues, for example, how to inform others. The stress of kamagra oral jelly price not knowing exactly what the child’s genitalia will look like and uncertainty about the diagnosis, treatment and prognosis cannot be avoided completely.

Parents are informed that if the postnatal phenotype is different from what was prenatally expected, the advice given about diagnostic testing can be adjusted accordingly, for example, if a hypospadias is milder than was expected based on prenatal ultrasound images. In our experience, kamagra oral jelly price parents appreciate having already spoken to some members of the DSD team during pregnancy and having a contact person before birth.After expert prenatal counselling, a significant number of pregnant couples decline prenatal testing (personal experience IALG, MK, ABD, YvB, MC and HC-vdG). At birth, umbilical cord blood is a good source for (molecular) karyotyping and storage of DNA and can be obtained by the obstetrician, midwife or neonatologist.

The terminology used in communication with parents should be carefully chosen,22 23 and midwives and staff of neonatal and delivery units should be clearly instructed kamagra oral jelly price to use gender-neutral and non-stigmatising vocabulary (eg, ‘your baby’) as long as sex assignment is pending.An algorithm for diagnostic evaluation of a suspected DSD in the prenatal situation is proposed in figure 1. When couples opt for invasive prenatal diagnosis, the genetic analysis usually involves an (SNP)-array. It was recently estimated that >30% of individuals who have a DSD have additional structural anomalies, with cardiac kamagra oral jelly price and neurological anomalies and fetal growth restriction being particularly common.27 28 If additional anomalies are seen, the geneticist can consider specific gene defects that may underlie a known genetic syndrome or carry out NGS.

NGS-based techniques have also now made their appearance in prenatal diagnosis of congenital anomalies.29 30 Panels using these techniques can be specific for genes involved in DSD, or be larger panels covering multiple congenital anomalies, and are usually employed with trio-analysis to compare variants identified in the child with the parents’ genetics.29–31 Finding a genetic cause before delivery can help reduce parental stress in the neonatal period and speed up decisions regarding gender assignment. In such cases there is no tight time limit, and we propose completing the analysis well before the expected delivery.Disorders/differences of sex development (DSD) in the kamagra oral jelly price prenatal setting. A diagnostic algorithm.

*SOX9. Upstream anomalies and balanced translocations at promotor sites!. Conventional karyotyping can be useful.

NGS, next-generation sequencing." data-icon-position data-hide-link-title="0">Figure 1 Disorders/differences of sex development (DSD) in the prenatal setting. A diagnostic algorithm. *SOX9.

Upstream anomalies and balanced translocations at promotor sites!. Conventional karyotyping can be useful. NGS, next-generation sequencing.First contact by a professional less experienced in DSDWhereas most current guidelines start from the point when an individual has been referred to the DSD team,1 15 the Dutch-Flemish guideline dedicates a chapter to healthcare professionals less experienced in DSD as they are often the first to suspect or identify such a condition.

Apart from the paper of Indyk,7 little guidance is available for these professionals about how to act in such a situation. The chapter in the Dutch-Flemish guideline summarises the various clinical presentations that a DSD can have and provides information on how to communicate with parents and/or patients about the findings of the physical examination, the first-line investigations and the need for prompt referral to a specialised centre for further evaluation. Clinical examples are offered to illustrate some of these recurring situations.

The medical issues in DSD can be very challenging, and the social and psychological impact is high. For neonates with ambiguous genitalia, sex assignment is an urgent and crucial issue, and it is mandatory that parents are informed that it is possible to postpone registration of their child’s sex. In cases where sex assignment has already taken place, the message that the development of the gonads or genitalia is still atypical is complicated and distressing for patients and parents or carers.

A list of contact details for DSD centres and patient organisations in the Netherlands and Flanders is attached to the Dutch-Flemish guideline. Publishing such a list, either in guidelines or online, can help healthcare professionals find the nearest centres for consultations and provide patients and patient organisations with an overview of the centres where expertise is available.Timing and place of genetic testing using NGS-based gene panelsThe diagnostic workup that is proposed for 46,XX and 46,XY DSD is shown in figures 2 and 3, respectively. Even with the rapidly expanding molecular possibilities, a (family) history and a physical examination remain the essential first steps in the diagnostic process.

Biochemical and hormonal screening aim at investigating serum electrolytes, renal function and the hypothalamic-pituitary-gonadal and hypothalamic-pituitary-adrenal axes. Ultrasound screening of kidneys and internal genitalia, as well as establishing genotypic sex, should be accomplished within 48 hours and complete the baseline diagnostic work-up of a child born with ambiguous genitalia.1 16 32 3346,XX disorders/differences of sex development (DSD) in the postnatal setting. A diagnostic algorithm.

NGS, next-generation sequencing. CAH, Congenital adrenal hyperplasia. AMH, Anti-Müllerian Hormone." data-icon-position data-hide-link-title="0">Figure 2 46,XX disorders/differences of sex development (DSD) in the postnatal setting.

A diagnostic algorithm. NGS, next-generation sequencing. CAH, Congenital adrenal hyperplasia.

AMH, Anti-Müllerian Hormone.46,XY disorders/differences of sex development (DSD) in the postnatal setting. A diagnostic algorithm. * SOX9.

Upstream anomalies and balanced translocations at promotor sites!. Conventional karyotyping can be useful. NGS, next-generation sequencing." data-icon-position data-hide-link-title="0">Figure 3 46,XY disorders/differences of sex development (DSD) in the postnatal setting.

A diagnostic algorithm. *SOX9. Upstream anomalies and balanced translocations at promotor sites!.

Conventional karyotyping can be useful. NGS, next-generation sequencing.Very recently, a European position paper has been published focusing on the genetic workup of DSD.16 It highlights the limitations and drawbacks of NGS-based tests, which include the chance of missing subtle structural variants such as CNVs and mosaicism and the fact that NGS cannot detect methylation defects or other epigenetic changes.16 28 31 Targeted DNA analysis is preferred in cases where hormonal investigations suggest a block in steroidogenesis (eg, 11-β-hydroxylase deficiency, 21-hydroxylase deficiency), or in the context of a specific clinical constellation such as the often coincidental finding of Müllerian structures in a boy with normal external genitalia or cryptorchidism, that is, persistent Müllerian duct syndrome.33 34 Alternative tests should also be considered depending on the available information. Sometimes, a simple mouth swab for FISH analysis can detect mosaic XY/X in a male with hypospadias or asymmetric gonadal development or in a female with little or no Turner syndrome stigmata and a normal male molecular karyotyping profile or peripheral blood karyotype.

Such targeted testing avoids incidental findings and is cheaper and faster than analysis of a large NGS-based panel, although the cost difference is rapidly declining.However, due to the genetic and phenotypic heterogeneity of DSD conditions, the most cost-effective next steps in the majority of cases are whole exome sequencing followed by panel analysis of genes involved in genital development and function or trio-analysis of a large gene panel (such as a Mendeliome).16 35–38 Pretest genetic counselling involves discussing what kind of information will be reported to patients or parents and the chance of detecting VUS, and the small risk of incidental findings when analysing a DSD panel should be mentioned. Laboratories also differ in what class of variants they report.39 In our experience, the fear of incidental findings is a major reason why some parents refrain from genetic testing.Timing of the DSD gene panel analysis is also important. While some patients or parents prefer that all diagnostic procedures be performed as soon as possible, others need time to reflect on the complex information related to more extensive genetic testing and on its possible consequences.

If parents or patients do not consent to panel-based genetic testing, analysis of specific genes, such as WT1, should be considered when appropriate in view of the clinical consequences if a mutation is present (eg, clinical surveillance of renal function and screening for Wilms’ tumour in the case of WT1 mutations). Genes that are more frequently involved in DSD (eg, SRY, NR5A1) and that match the specific clinical and hormonal features in a given patient could also be considered for sequencing. Targeted gene analysis may also be preferred in centres located in countries that do not have the resources or technical requirements to perform NGS panel-based genetic testing.

Alternatively, participation by these centres in international collaborative networks may allow them to outsource the molecular genetic workup abroad.Gene panels differ between centres and are regularly updated based on scientific progress. A comparison of DSD gene panels used in recent studies can be found at https://www.nature.com/articles/s41574-018-0010-8%23Sec46.15 The panels currently used at the coauthors’ institutions can be found on their respective websites. Given the pace of change, it is important to regularly consider repeating analysis in patients with an unexplained DSD, for example, when they transition into adult care or when they move from one centre to another.

This also applies to patients in whom a clinical diagnosis has never been genetically confirmed. Confusion may arise when the diagnosis cannot be confirmed or when a mutation is identified in a different gene, for example, NR5A1 in someone with a clinical diagnosis of CAIS that has other consequences for relatives. Hence, new genetic counselling should always accompany new diagnostic endeavours.Class 3 variants and histopathological examinationsThe rapidly evolving diagnostic possibilities raise new questions.

What do laboratories report?. How should we deal with the frequent findings of mainly unique VUS or class 3 variants (ACMG recommendation) in the many different DSD-related genes in the diagnostic setting?. Reporting VUS can be a source of uncertainty for parents, but not reporting these variants precludes further investigations to determine their possible pathogenicity.

It can also be difficult to prove variant pathogenicity, both on gene-level and variant-level.39 Moreover, given the gonad-specific expression of some genes and the variable phenotypic spectrum and reduced penetrance, segregation analysis is not always informative. A class 3 variant that does not fit the clinical presentation may be unrelated to the observed phenotype, but it could also represent a newly emerging phenotype. This was recently demonstrated by the identification of the NR5A1 mutation, R92W, in individuals with 46,XX testicular and ovotesticular DSD.40 This gene had previously been associated with 46,XY DSD.

In diagnostic laboratories, there is usually no capacity or expertise to conduct large-scale functional studies to determine pathogenicity of these unique class 3 VUS in the different genes involved in DSD. Functional validation of variants identified in novel genes may be more attractive in a research context. However, for individual families with VUS in well-established DSD genes such as AR or HSD17B3, functional analysis may provide a confirmed diagnosis that implies for relatives the option of undergoing their own DNA analysis and estimating the genetic risk of their own future offspring.

This makes genetic follow-up important in these cases and demonstrates the usefulness of international databases and networks and the centralisation of functional studies of genetic variants in order to reduce costs and maximise expertise.The same is true for histopathological description, germ-cell tumour risk assessment in specific forms of DSD and classification of gonadal samples. Germ-cell tumour risk is related to the type of DSD (among other factors), but it is impossible to make risk estimates in individual cases.41–44 Gonadectomy may be indicated in cases with high-risk dysgenetic abdominal gonads that cannot be brought into a stable superficial (ie, inguinal, labioscrotal) position that allows clinical or radiological surveillance, or to avoid virilisation due to 5-alpha reductase deficiency in a 46,XY girl with a stable female gender identity.45 Pathological examination of DSD gonads requires specific expertise. For example, the differentiation between benign germ cell abnormalities, such as delayed maturation and (pre)malignant development of germ cells, is crucial for clinical management but can be very troublesome.46 Centralised pathological examination of gonadal biopsy and gonadectomy samples in one centre, or a restricted number of centres, on a national scale can help to overcome the problem of non-uniform classification and has proven feasible in the Netherlands and Belgium.

We therefore believe that uniform assessment and classification of gonadal differentiation patterns should also be addressed in guidelines on DSD management.International databases of gonadal tissues are crucial for learning more about the risk of malignancy in different forms of DSD, but they are only reliable if uniform criteria for histological classification are strictly applied.46 These criteria could be incorporated in many existing networks such as the I-DSD consortium, the Disorders of Sex Development Translational Research Network, the European Reference Network on Urogenital Diseases (eUROGEN), the EndoERN and COST actions.15–17 47Communication at the transition from paediatric to adult carePaediatric and adult teams need to collaborate closely to facilitate a well-organised transition from paediatric to adult specialist care.15 48–50 Both teams need to exchange information optimally and should consider transition as a longitudinal process rather than a fixed moment in time. Age-appropriate information is key at all ages, and an overview of topics to be discussed at each stage is described by Cools et al.15 Table 1 shows an example of how transition can be organised.View this table:Table 1 Example of transition table as used in the DSD clinic of the Erasmus Medical CenterPsychological support and the continued provision of information remains important for individuals with a DSD at all ages.15 22 In addition to the information given by the DSD team members, families and patients can benefit from resources such as support groups and information available on the internet.47 Information available online should be checked for accuracy and completeness when referring patients and parents to internet sites.Recommendations for future actionsMost guidelines and articles on the diagnosis and management of DSD are aimed at specialists and are only published in specialist journals or on websites for endocrinologists, urologists or geneticists. Yet there is a need for guidelines directed towards first-line and second-line healthcare workers that summarise the recommendations about the first crucial steps in the management of DSD.

These should be published in widely available general medical journals and online, along with a national list of DSD centres. Furthermore, DSD (expert) centres should provide continuous education to all those who may be involved in the identification of individuals with a DSD in order to enable these healthcare professionals to recognise atypical genitalia, to promptly refer individuals who have a DSD and to inform the patient and parents about this and subsequent diagnostic procedures.As DSD continues to be a rare condition, it will take time to evaluate the effects of having such a guideline on the preparedness of first-line and second-line healthcare workers to recognise DSD conditions. One way to evaluate this might be the development and use of questionnaires asking patients, carers and families and referring physicians how satisfied they were with the initial medical consultation and referral and what could be improved.

A helpful addition to existing international databases that collect information on genetic variations would be a list of centres that offer suitable functional studies for certain genes, ideally covering the most frequently mutated genes (at minimum).Patient organisations can also play an important role in informing patients about newly available diagnostic or therapeutic strategies and options, and their influence and specific role has now been recognised and discussed in several publications.17 47 However, it should be kept in mind that these organisations do not represent all patients, as a substantial number of patients and parents are not member of such an organisation.Professionals have to provide optimal medical care based on well-established evidence, or at least on broad consensus. Yet not everything can be regulated by recommendations and guidelines. Options, ideas and wishes should be openly discussed between professionals, patients and families within their confidential relationship.

This will enable highly individualised holistic care tailored to the patient’s needs and expectations. Once they are well-informed of all available options, parents and/or patients can choose what they consider the optimal care for their children or themselves.15 16ConclusionThe Dutch-Flemish guideline uniquely addresses some topics that are under-represented in the literature, thus adding some key aspects to those addressed in recent consensus papers and guidelines.15–17 33 47As more children with a DSD are now being identified prenatally, and the literature on prenatal diagnosis of DSD remains scarce,20 21 we propose a prenatal diagnostic algorithm and emphasise the importance of having a prenatal specialist involved in or collaborating with DSD (expert) centres.We also stress that good communication between all involved parties is essential. Professionals should be well informed about protocols and communication.

Collaboration between centres is necessary to optimise aspects of care such as uniform interpretation of gonadal pathology and functional testing of class 3 variants found by genetic testing. Guidelines can provide a framework within which individualised patient care should be discussed with all stakeholders.AcknowledgmentsThe authors would like to thank the colleagues of the DSD teams for their input in and critical reading of the Dutch-Flemish guideline. Amsterdam University Center (AMC and VU), Maastricht University Medical Center, Erasmus Medical Center Rotterdam, Radboud University Medical Center Nijmegen, University Medical Center Groningen, University Medical Center Utrecht, Ghent University Hospital.

The authors would like to thank Kate McIntyre for editing the revised manuscript and Tom de Vries Lentsch for providing the figures as a PDF. Three of the authors of this publication are members of the European Reference Network for rare endocrine diseases—Project ID 739543.IntroductionEndometrial cancer is the most common gynaecological malignancy in the developed world.1 Its incidence has risen over the last two decades as a consequence of the ageing population, fewer hysterectomies for benign disease and the obesity epidemic. In the USA, it is estimated that women have a 1 in 35 lifetime risk of endometrial cancer, and in contrast to cancers of most other sites, cancer-specific mortality has risen by approximately 2% https://www.epide.fr/buy-generic-kamagra-online/ every year since 2008 related to the rapidly rising incidence.2Endometrial cancer has traditionally been classified into type I and type II based on morphology.3 The more common subtype, type I, is mostly comprised of endometrioid tumours and is oestrogen-driven, arises from a hyperplastic endometrium, presents at an early stage and has an excellent 5 year survival rate.4 By contrast, type II includes non-endometrioid tumours, specifically serous, carcinosarcoma and clear cell subtypes, which are biologically aggressive tumours with a poor prognosis that are often diagnosed at an advanced stage.5 Recent efforts have focused on a molecular classification system for more accurate categorisation of endometrial tumours into four groups with distinct prognostic profiles.6 7The majority of endometrial cancers arise through the interplay of familial, genetic and lifestyle factors.

Two inherited cancer predisposition syndromes, Lynch syndrome and the much rarer Cowden syndrome, substantially increase the lifetime risk of endometrial cancer, but these only account for around 3–5% of cases.8–10 Having first or second degree relative(s) with endometrial or colorectal cancer increases endometrial cancer risk, although a large European twin study failed to demonstrate a strong heritable link.11 The authors failed to show that there was greater concordance in monozygotic than dizygotic twins, but the study was based on relatively small numbers of endometrial cancers. Lu and colleagues reported an association between common single nucleotide polymorphisms (SNPs) and endometrial cancer risk, revealing the potential role of SNPs in explaining part of the risk in both the familial and general populations.12 Thus far, many SNPs have been reported to modify susceptibility to endometrial cancer. However, much of this work predated genome wide association studies and is of variable quality.

Understanding genetic predisposition to endometrial cancer could facilitate personalised risk assessment with a view to targeted prevention and screening interventions.13 This emerged as the most important unanswered research question in endometrial cancer according to patients, carers and healthcare professionals in our recently completed James Lind Womb Cancer Alliance Priority Setting Partnership.14 It would be particularly useful for non-endometrioid endometrial cancers, for which advancing age is so far the only predictor.15We therefore conducted a comprehensive systematic review of the literature to provide an overview of the relationship between SNPs and endometrial cancer risk. We compiled a list of the most robust endometrial cancer-associated SNPs. We assessed the applicability of this panel of SNPs with a theoretical polygenic risk score (PRS) calculation.

We also critically appraised the meta-analyses investigating the most frequently reported SNPs in MDM2. Finally, we described all SNPs reported within genes and pathways that are likely involved in endometrial carcinogenesis and metastasis.MethodsOur systematic review follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) collaboration 2009 recommendations. The registered protocol is available through PROSPERO (CRD42018091907).16Search strategyWe searched Embase, MEDLINE and Cumulative Index to Nursing and Allied Health Literature (CINAHL) databases via the Healthcare Databases Advanced Search (HDAS) platform, from 2007 to 2018, to identify studies reporting associations between polymorphisms and endometrial cancer risk.

Key words including MeSH (Medical Subject Heading) terms and free-text words were searched in both titles and abstracts. The following terms were used. €œendomet*”,“uter*”, “womb”, “cancer(s)”, “neoplasm(s)”, “endometrium tumour”, “carcinoma”, “adenosarcoma”, “clear cell carcinoma”, “carcinosarcoma”, “SNP”, “single nucleotide polymorphism”, “GWAS”, and “genome-wide association study/ies”.

No other restrictions were applied. The search was repeated with time restrictions between 2018 and June 2019 to capture any recent publications.Eligibility criteriaStudies were selected for full-text evaluation if they were primary articles investigating a relationship between endometrial cancer and SNPs. Study outcome was either the increased or decreased risk of endometrial cancer relative to controls reported as an odds ratio (OR) with corresponding 95% confidence intervals (95% CIs).Study selectionThree independent reviewers screened all articles uploaded to a screening spreadsheet developed by Helena VonVille.17 Disagreements were resolved by discussion.

Chronbach’s α score was calculated between reviewers and indicated high consistency at 0.92. Case–control, prospective and retrospective studies, genome-wide association studies (GWAS), and both discovery and validation studies were selected for full-text evaluation. Non-English articles, editorials, conference abstracts and proceedings, letters and correspondence, case reports and review articles were excluded.Candidate-gene studies with at least 100 women and GWAS with at least 1000 women in the case arm were selected to ensure reliability of the results, as explained by Spencer et al.18 To construct a panel of up to 30 SNPs with the strongest evidence of association, those with the strongest p values were selected.

For the purpose of an SNP panel, articles utilising broad European or multi-ethnic cohorts were selected. Where overlapping populations were identified, the most comprehensive study was included.Data extraction and synthesisFor each study, the following data were extracted. SNP ID, nearby gene(s)/chromosome location, OR (95% CI), p value, minor or effect allele frequency (MAF/EAF), EA (effect allele) and OA (other allele), adjustment, ethnicity and ancestry, number of cases and controls, endometrial cancer type, and study type including discovery or validation study and meta-analysis.

For risk estimates, a preference towards most adjusted results was applied. For candidate-gene studies, a standard p value of<0.05 was applied and for GWAS a p value of <5×10-8, indicating genome-wide significance, was accepted as statistically significant. However, due to the limited number of SNPs with p values reaching genome-wide significance, this threshold was then lowered to <1×10-5, allowing for marginally significant SNPs to be included.

As shown by Mavaddat et al, for breast cancer, SNPs that fall below genome-wide significance may still be useful for generating a PRS and improving the models.19We estimated the potential value of a PRS based on the most significant SNPs by comparing the predicted risk for a woman with a risk score in the top 1% of the distribution to the mean predicted risk. Per-allele ORs and MAFs were taken from the publications and standard errors (SEs) for the lnORs were derived from published 95% CIs. The PRS was assumed to have a Normal distribution, with mean 2∑βipI and SE, σ, equal to √2∑βi2pI(1−pi), according to the binomial distribution, where the summation is over all SNPs in the risk score.

Hence the relative risk (RR) comparing the top 1% of the distribution to the mean is given by exp(Z0.01σ), where Z is the inverse of the standard normal cumulative distribution.ResultsThe flow chart of study selection is illustrated in figure 1. In total, 453 text articles were evaluated and, of those, 149 articles met our inclusion criteria. One study was excluded from table 1, for having an Asian-only population, as this would make it harder to compare with the rest of the results which were all either multi-ethnic or Caucasian cohorts, as stated in our inclusion criteria for the SNP panel.20 Any SNPs without 95% CIs were also excluded from any downstream analysis.

Additionally, SNPs in linkage disequilibrium (r2 >0.2) with each other were examined, and of those in linkage disequilibrium, the SNP with strongest association was reported. Per allele ORs were used unless stated otherwise.View this table:Table 1 List of top SNPs most likely to contribute to endometrial cancer risk identified through systematic review of recent literature21–25Study selection flow diagram. *Reasons.

Irrelevant articles, articles focusing on other conditions, non-GWAS/candidate-gene study related articles, technical and duplicate articles. GWAS, genome-wide association study. Adapted from.

Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group (2009). Preferred Reporting Items for Systematic Reviews and Meta-Analyses. The PRISMA Statement.

PLoS Med 6(6). E1000097. Doi:10.1371/journal.pmed1000097." data-icon-position data-hide-link-title="0">Figure 1 Study selection flow diagram.

*Reasons. Irrelevant articles, articles focusing on other conditions, non-GWAS/candidate-gene study related articles, technical and duplicate articles. GWAS, genome-wide association study.

Adapted from. Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group (2009). Preferred Reporting Items for Systematic Reviews and Meta-Analyses.

The PRISMA Statement. PLoS Med 6(6). E1000097.

Doi:10.1371/journal.pmed1000097.Top SNPs associated with endometrial cancer riskFollowing careful interpretation of the data, 24 independent SNPs with the lowest p values that showed the strongest association with endometrial cancer were obtained (table 1).21–25 These SNPs are located in or around genes coding for transcription factors, cell growth and apoptosis regulators, and enzymes involved in the steroidogenesis pathway. All the SNPs presented here were reported on the basis of a GWAS or in one case, an exome-wide association study, and hence no SNPs from candidate-gene studies made it to the list. This is partly due to the nature of larger GWAS providing more comprehensive and powered results as opposed to candidate gene studies.

Additionally, a vast majority of SNPs reported by candidate-gene studies were later refuted by large-scale GWAS such as in the case of TERT and MDM2 variants.26 27 The exception to this is the CYP19 gene, where candidate-gene studies reported an association between variants in this gene with endometrial cancer in both Asian and broad European populations, and this association was more recently confirmed by large-scale GWAS.21 28–30 Moreover, a recent article authored by O’Mara and colleagues reviewed the GWAS that identified most of the currently known SNPs associated with endometrial cancer.31Most of the studies represented in table 1 are GWAS and the majority of these involved broad European populations. Those having a multi-ethnic cohort also consisted primarily of broad European populations. Only four of the variants in table 1 are located in coding regions of a gene, or in regulatory flanking regions around the gene.

Thus, most of these variants would not be expected to cause any functional effects on the gene or the resulting protein. An eQTL search using GTEx Portal showed that some of the SNPs are significantly associated (p<0.05) with modified transcription levels of the respective genes in various tissues such as prostate (rs11263761), thyroid (rs9668337), pituitary (rs2747716), breast mammary (rs882380) and testicular (rs2498794) tissue, as summarised in table 2.View this table:Table 2 List of eQTL hits for the selected panel of SNPsThe only variant for which there was an indication of a specific association with non-endometrioid endometrial cancer was rs148261157 near the BCL11A gene. The A allele of this SNP had a moderately higher association in the non-endometrioid arm (OR 1.64, 95% CI 1.32 to 2.04.

P=9.6×10-6) compared with the endometrioid arm (OR 1.25, 95% CI 1.14 to 1.38. P=4.7×10-6).21Oestrogen receptors α and β encoded by ESR1 and ESR2, respectively, have been extensively studied due to the assumed role of oestrogens in the development of endometrial cancer. O’Mara et al reported a lead SNP (rs79575945) in the ESR1 region that was associated with endometrial cancer (p=1.86×10-5).24 However, this SNP did not reach genome-wide significance in a more recent larger GWAS.21 No statistically significant associations have been reported between endometrial cancer and SNPs in the ESR2 gene region.AKT is an oncogene linked to endometrial carcinogenesis.

It is involved in the PI3K/AKT/mTOR pro-proliferative signalling pathway to inactivate apoptosis and allow cell survival. The A allele of rs2494737 and G allele of rs2498796 were reported to be associated with increased and decreased risk of endometrial cancer in 2016, respectively.22 30 However, this association was not replicated in a larger GWAS in 2018.21 Nevertheless, given the previous strong indications, and biological basis that could explain endometrial carcinogenesis, we decided to include an AKT1 variant (rs2498794) in our results.PTEN is a multi-functional tumour suppressor gene that regulates the AKT/PKB signalling pathway and is commonly mutated in many cancers including endometrial cancer.32 Loss-of-function germline mutations in PTEN are responsible for Cowden syndrome, which exerts a lifetime risk of endometrial cancer of up to 28%.9 Lacey and colleagues studied SNPs in the PTEN gene region. However, none showed significant differences in frequency between 447 endometrial cancer cases and 439 controls of European ancestry.33KRAS mutations are known to be present in endometrial cancer.

These can be activated by high levels of KLF5 (transcriptional activator). Three SNPs have been identified in or around KLF5 that are associated with endometrial cancer. The G allele of rs11841589 (OR 1.15, 95% CI 1.11 to 1.21.

P=4.83×10-11), the A allele of rs9600103 (OR 1.23, 95% CI 1.16 to 1.30. P=3.76×10-12) and C allele of rs7981863 (OR 1.16, 95% CI 1.12 to 1.20. P=2.70×10-17) have all been found to be associated with an increased likelihood of endometrial cancer in large European cohorts.21 30 34 It is worth noting that these SNPs are not independent, and hence they quite possibly tag the same causal variant.The MYC family of proto-oncogenes encode transcription factors that regulate cell proliferation, which can contribute to cancer development if dysregulated.

The recent GWAS by O’Mara et al reported three SNPs within the MYC region that reached genome-wide significance with conditional p values reaching at least 5×10–8.35To test the utility of these SNPs as predictive markers, we devised a theoretical PRS calculation using the log ORs and EAFs per SNP from the published data. The results were very encouraging with an RR of 3.16 for the top 1% versus the mean, using all the top SNPs presented in table 1 and 2.09 when using only the SNPs that reached genome-wide significance (including AKT1).Controversy surrounding MDM2 variant SNP309MDM2 negatively regulates tumour suppressor gene TP53, and as such, has been extensively studied in relation to its potential role in predisposition to endometrial cancer. Our search identified six original studies of the association between MDM2 SNP rs2279744 (also referred to as SNP309) and endometrial cancer, all of which found a statistically significant increased risk per copy of the G allele.

Two more original studies were identified through our full-text evaluation. However, these were not included here as they did not meet our inclusion criteria—one due to small sample size, the other due to studying rs2279744 status dependent on another SNP.36 37 Even so, the two studies were described in multiple meta-analyses that are listed in table 3. Different permutations of these eight original studies appear in at least eight published meta-analyses.

However, even the largest meta-analysis contained <2000 cases (table 3)38View this table:Table 3 Characteristics of studies that examined MDM2 SNP rs2279744In comparison, a GWAS including nearly 13 000 cases found no evidence of an association with OR and corresponding 95% CI of 1.00 (0.97 to 1.03) and a p value of 0.93 (personal communication).21 Nevertheless, we cannot completely rule out a role for MDM2 variants in endometrial cancer predisposition as the candidate-gene studies reported larger effects in Asians, whereas the GWAS primarily contained participants of European ancestry. There is also some suggestion that the SNP309 variant is in linkage disequilibrium with another variant, SNP285, which confers an opposite effect.It is worth noting that the SNP285C/SNP309G haplotype frequency was observed in up to 8% of Europeans, thus requiring correction for the confounding effect of SNP285C in European studies.39 However, aside from one study conducted by Knappskog et al, no other study including the meta-analyses corrected for the confounding effect of SNP285.40 Among the studies presented in table 3, Knappskog et al (2012) reported that after correcting for SNP285, the OR for association of this haplotype with endometrial cancer was much lower, though still significant. Unfortunately, the meta-analyses which synthesised Knappskog et al (2012), as part of their analysis, did not correct for SNP285C in the European-based studies they included.38 41 42 It is also concerning that two meta-analyses using the same primary articles failed to report the same result, in two instances.38 42–44DiscussionThis article represents the most comprehensive systematic review to date, regarding critical appraisal of the available evidence of common low-penetrance variants implicated in predisposition to endometrial cancer.

We have identified the most robust SNPs in the context of endometrial cancer risk. Of those, only 19 were significant at genome-wide level and a further five were considered marginally significant. The largest GWAS conducted in this field was the discovery- and meta-GWAS by O’Mara et al, which utilised 12 096 cases and 108 979 controls.21 Despite the inclusion of all published GWAS and around 5000 newly genotyped cases, the total number did not reach anywhere near what is currently available for other common cancers such as breast cancer.

For instance, BCAC (Breast Cancer Association Consortium) stands at well over 200 000 individuals with more than half being cases, and resulted in identification of ~170 SNPs in relation to breast cancer.19 45 A total of 313 SNPs including imputations were then used to derive a PRS for breast cancer.19 Therefore, further efforts should be directed to recruit more patients, with deep phenotypic clinical data to allow for relevant adjustments and subgroup analyses to be conducted for better precision.A recent pre-print study by Zhang and colleagues examined the polygenicity and potential for SNP-based risk prediction for 14 common cancers, including endometrial cancer, using available summary-level data from European-ancestry datasets.46 They estimated that there are just over 1000 independent endometrial cancer susceptibility SNPs, and that a PRS comprising all such SNPs would have an area under the receiver-operator curve of 0.64, similar to that predicted for ovarian cancer, but lower than that for the other cancers in the study. The modelling in the paper suggests that an endometrial cancer GWAS double the size of the current largest study would be able to identify susceptibility SNPs together explaining 40% of the genetic variance, but that in order to explain 75% of the genetic variance it would be necessary to have a GWAS comprising close to 150 000 cases and controls, far in excess of what is currently feasible.We found that the literature consists mainly of candidate-gene studies with small sample sizes, meta-analyses reporting conflicting results despite using the same set of primary articles, and multiple reports of significant SNPs that have not been validated by any larger GWAS. The candidate-gene studies were indeed the most useful and cheaper technique available until the mid to late 2000s.

However, a lack of reproducibility (particularly due to population stratification and reporting bias), uncertainty of reported associations, and considerably high false discovery rates make these studies much less appropriate in the post-GWAS era. Unlike the candidate-gene approach, GWAS do not require prior knowledge, selection of genes or SNPs, and provide vast amounts of data. Furthermore, both the genotyping process and data analysis phases have become cheaper, the latter particularly due to faster and open-access pre-phasing and imputation tools being made available.It is clear from table 1 that some SNPs were reported with wide 95% CI, which can be directly attributed to small sample sizes particularly when restricting the cases to non-endometrioid histology only, low EAF or poor imputation quality.

Thus, these should be interpreted with caution. Additionally, most of the SNPs reported by candidate-gene studies were not detected by the largest GWAS to date conducted by O’Mara et al.21 However, this does not necessarily mean that the possibility of those SNPs being relevant should be completely dismissed. Moreover, meta-analyses were attempted for other variants.

However, these showed no statistically significant association and many presented with high heterogeneity between the respective studies (data not shown). Furthermore, as many studies utilised the same set of cases and/or controls, conducting a meta-analysis was not possible for a good number of SNPs. It is therefore unequivocal that the literature is crowded with numerous small candidate-gene studies and conflicting data.

This makes it particularly hard to detect novel SNPs and conduct meaningful meta-analyses.We found convincing evidence for 19 variants that indicated the strongest association with endometrial cancer, as shown in table 1. The associations between endometrial cancer and variants in or around HNF1B, CYP19A1, SOX4, MYC, KLF and EIF2AK found in earlier GWAS were then replicated in the latest and largest GWAS. These SNPs showed promising potential in a theoretical PRS we devised based on published data.

Using all 24 or genome-wide significant SNPs only, women with a PRS in the top 1% of the distribution would be predicted to have a risk of endometrial cancer 3.16 and 2.09 times higher than the mean risk, respectively.However, the importance of these variants and relevance of the proximate genes in a functional or biological context is challenging to evaluate. Long distance promoter regulation by enhancers may disguise the genuine target gene. In addition, enhancers often do not loop to the nearest gene, further complicating the relevance of nearby gene(s) to a GWAS hit.

In order to elucidate biologically relevant candidate target genes in endometrial cancer, O’Mara et al looked into promoter-associated chromatin looping using a modern HiChIP approach.47 The authors utilised normal and tumoural endometrial cell lines for this analysis which showed significant enrichment for endometrial cancer heritability, with 103 candidate target genes identified across the 13 risk loci identified by the largest ECAC GWAS. Notable genes identified here were CDKN2A and WT1, and their antisense counterparts. The former was reported to be nearby of rs1679014 and the latter of rs10835920, as shown in table 1.

Moreover, of the 36 candidate target genes, 17 were found to be downregulated while 19 were upregulated in endometrial tumours.The authors also investigated overlap between the 13 endometrial cancer risk loci and top eQTL variants for each target gene.47 In whole blood, of the two particular lead SNPs, rs8822380 at 17q21.32 was a top eQTL for SNX11 and HOXB2, whereas rs937213 at 15q15.1 was a top eQTL for SRP14. In endometrial tumour, rs7579014 at 2p16.1 was found to be a top eQTL for BCL11A. This is particularly interesting because BCL11A was the only nearby/candidate gene that had a GWAS association reported in both endometrioid and non-endometrioid subtypes.

The study looked at protein–protein interactions between endometrial cancer drivers and candidate target gene products. Significant interactions were observed with TP53 (most significant), AKT, PTEN, ESR1 and KRAS, among others. Finally, when 103 target candidate genes and 387 proteins were combined together, 462 pathways were found to be significantly enriched.

Many of these are related to gene regulation, cancer, obesity, insulinaemia and oestrogen exposure. This study clearly showed a potential biological relevance for some of the SNPs reported by ECAC GWAS in 2018.Most of the larger included studies used cohorts primarily composed of women of broad European descent. Hence, there are negligible data available for other ethnicities, particularly African women.

This is compounded by the lack of reference genotype data available for comparative analysis, making it harder for research to be conducted in ethnicities other than Europeans. This poses a problem for developing risk prediction models that are equally valuable and predictive across populations. Thus, our results also are of limited applicability to non-European populations.Furthermore, considering that non-endometrioid cases comprise a small proportion (~20%) of all endometrial cancer cases, much larger cohort sizes are needed to detect any genuine signals for non-endometrioid tumours.

Most of the evaluated studies looked at either overall/mixed endometrial cancer subtypes or endometrioid histology, and those that looked at variant associations with non-endometrioid histology were unlikely to have enough power to detect any signal with statistical significance. This is particularly concerning because non-endometrioid subtypes are biologically aggressive tumours with a much poorer prognosis that contribute disproportionately to mortality from endometrial cancer. It is particularly important that attempts to improve early detection and prevention of endometrial cancer focus primarily on improving outcomes from these subtypes.

It is also worth noting that, despite the current shift towards a molecular classification of endometrial cancer, most studies used the overarching classical Bokhman’s classification system, type I versus type II, or no histological classification system at all. Therefore, it is important to create and follow a standardised and comprehensive classification system for reporting tumour subtypes for future studies.This study compiled and presented available information for an extensively studied, yet unproven in large datasets, SNP309 variant in MDM2. Currently, there is no convincing evidence for an association between this variant and endometrial cancer risk.

Additionally, of all the studies, only one accounted for the opposing effect of a nearby variant SNP285 in their analyses. Thus, we conclude that until confirmed by a sufficiently large GWAS, this variant should not be considered significant in influencing the risk of endometrial cancer and therefore not included in a PRS. This is also true for the majority of the SNPs reported in candidate-gene studies, as the numbers fall far short of being able to detect genuine signals.This systematic review presents the most up-to-date evidence for endometrial cancer susceptibility variants, emphasising the need for further large-scale studies to identify more variants of importance, and validation of these associations.

Until data from larger and more diverse cohorts are available, the top 24 SNPs presented here are the most robust common genetic variants that affect endometrial cancer risk. The multiplicative effects of these SNPs could be used in a PRS to allow personalised risk prediction models to be developed for targeted screening and prevention interventions for women at greatest risk of endometrial cancer..

IntroductionIn recent years, many you can try these out studies have been published on new diagnostic possibilities and management approaches in cohorts of kamagra pill cost patients suspected to have a disorder/difference of sex development (DSD).1–13 Based on these studies, it has become clear that services and institutions still differ in the composition of the multidisciplinary teams that provide care for patients who have a DSD.11 14 Several projects have now worked to resolve this variability in care. The European Cooperation in Science and Technology (EU COST) action BM1303 ‘A systematic elucidation of differences of sex development’ has been a platform to achieve European agreement on harmonisation of clinical management and laboratory practices.15–17 Another such initiative involved an update of the 2006 DSD consensus document by an international group of professionals and patient representatives.18 These initiatives have highlighted how cultural and financial aspects and kamagra pill cost the availability of resources differ significantly between countries and societies, a situation that hampers supranational agreement on common diagnostic protocols. As only a few national guidelines have been published in international journals, comparison of these guidelines is difficult even though such a comparison is necessary to capture the differences and initiate actions to overcome them. Nonetheless, four DSD (expert) centres located in the Netherlands and Flanders (the kamagra pill cost Dutch-speaking Northern part of Belgium) have collaborated to produce a detailed guideline on diagnostics in DSD.19 This shows that a supranational guideline can be a reasonable approach for countries with similarly structured healthcare systems and similar resources. Within the guideline there is agreement that optimisation of expertise and care can be achieved through centralisation, for example, by limiting analysis of next-generation sequencing (NGS)-based diagnostic panels to only a few centres and by centralising pathological review of gonadal tissues.

International networks such as the European Reference Network for rare endocrine conditions (EndoERN), in which DSD is embedded, may facilitate the expansion of this kind of collaboration across Europe.This paper highlights key discussion points in the kamagra pill cost Dutch-Flemish guideline that have been insufficiently addressed in the literature thus far because they reflect evolving technologies or less visible stakeholders. For example, prenatal observation of an atypical aspect of the genitalia indicating a possible DSD is becoming increasingly common, and we discuss appropriate counselling and a diagnostic approach for these cases, including the option of using NGS-based genetic testing. So far, little attention has been paid to this process.20 21 Furthermore, informing patients and/or their parents about atypical sex development and why this may warrant referral to a specialised team may be challenging, especially for professionals with limited experience kamagra pill cost in DSD.22 23 Therefore, a section of the Dutch-Flemish guideline was written for these healthcare providers. Moreover, this enables DSD specialists to refer to the guideline when advising a referral. Transition from the prenatal to the postnatal team and kamagra pill cost from the paediatric to the adult team requires optimal communication between the specialists involved.

Application of NGS-based techniques may lead to a higher diagnostic yield, providing a molecular genetic diagnosis in previously unsolved cases.16 We address the timing of this testing and the problems associated with this technique such as the interpretation of variants of unknown clinical significance (VUS). Similarly, histopathological interpretation and classification of removed kamagra pill cost gonadal tissue is challenging and would benefit from international collaboration and centralisation of expertise.MethodsFor the guideline revision, an interdisciplinary multicentre group was formed with all members responsible for updating the literature for a specific part of the guideline. Literature search in PubMed was not systematic, but rather intended to be broad in order to cover all areas and follow expert opinions. This approach is more in line with the Clinical Practice Advisory Document method described by Burke et al24 for guidelines involving genetic practice because it is often troublesome to substantiate such guidelines with sufficient evidence due to the rapid changes in kamagra pill cost testing methods, for example, gene panels. All input provided by the group was synthesised by the chairperson (YvB), who also reviewed abstracts of papers on DSD published between 2010 and September 2017 for the guideline and up to October 2019 for this paper.

Abstracts had kamagra pill cost to be written in English and were identified using a broad range of Medical Subject Headings terms (eg, DSD, genetic, review, diagnosis, diagnostics, 46,XX DSD, 46,XY DSD, guideline, multidisciplinary care). Next, potentially relevant papers on diagnostic procedures in DSD were selected. Case reports kamagra pill cost were excluded, as were articles that were not open access or retrievable through institutional access. Based on this, a draft guideline was produced that was in line with the international principles of good diagnostic care in DSD. This draft was discussed by the writing committee and, after having kamagra pill cost obtained agreement on remaining points of discussion, revised into a final draft.

This version was sent to a broad group of professionals from academic centres and DSD teams whose members had volunteered to review the draft guideline. After receiving and incorporating their input, the final version was presented to the paediatric and genetic associations for approval kamagra pill cost. After approval by the members of the paediatric (NVK), clinical genetic (VKGN) and genetic laboratory (VKGL) associations, the guideline was published on their respective websites.19 Although Turner syndrome and Klinefelter syndrome are considered to be part of the DSD spectrum, they are not extensively discussed in this diagnostic guideline as guidelines dedicated to these syndromes already exist.25 26 However, some individuals with Turner syndrome or Klinefelter syndrome may present with ambiguous or atypical genitalia and may therefore initially follow the DSD diagnostic process.Guideline highlightsPrenatal settingPresentationThe most frequent prenatal presentation of a DSD condition is atypical genitalia found on prenatal ultrasound as an isolated finding or in combination with other structural anomalies. This usually occurs after the 20-week routine medical ultrasound for screening of congenital anomalies, but may also occur earlier, for example, when a commercial ultrasound is performed at the request of the parents.Another way DSD can be diagnosed before birth is when invasive prenatal genetic testing carried out for a different reason, for example, due to suspicion of other kamagra pill cost structural anomalies, reveals a discrepancy between the genotypic sex and the phenotypic sex seen by ultrasound. In certified laboratories, the possibility of a sample switch is extremely low but should be ruled out immediately.

More often, the kamagra pill cost discrepancy will be due to sex-chromosome mosaicism or a true form of DSD.A situation now occurring with increasing frequency is a discrepancy between the genotypic sex revealed by non-invasive prenatal testing (NIPT), which is now available to high-risk pregnant women in the Netherlands and to all pregnant women in Belgium, and later ultrasound findings. NIPT screens for CNVs in the fetus. However, depending on legal restrictions and/or ethical considerations, the X and Y chromosomes are not always included in kamagra pill cost NIPT analysis and reports. If the X and Y chromosomes are included, it is important to realise that the presence of a Y-chromosome does not necessarily imply male fetal development. At the time that NIPT is performed (usually 11–13 weeks), genital development cannot be reliably appreciated by ultrasound, so any discrepancy or atypical aspect of the genitalia will only be noticed later in pregnancy and should prompt further evaluation.Counselling and diagnosticsIf a DSD is suspected, first-line kamagra pill cost sonographers and obstetricians should refer the couple to their colleague prenatal specialists working with or in a DSD team.

After confirming an atypical genital on ultrasound, the specialist team should offer the couple a referral for genetic counselling to discuss the possibility of performing invasive prenatal testing (usually an amniocentesis) to identify an underlying cause that fits the ultrasound findings.22 23 To enable the parents to make a well-informed decision, prenatal counselling should, in our opinion, include. Information on the ultrasound findings and the limitations kamagra pill cost of this technique. The procedure(s) that can be followed, including the risks associated with an amniocentesis. And the type kamagra pill cost of information genetic testing can and cannot provide. Knowing which information has been provided and what words have been used by the prenatal specialist is very helpful for those involved in postnatal care.It is important that parents understand that the biological sex of a baby is determined by a complex interplay of chromosomes, genes and hormones, and thus that assessment of the presence or absence of a Y-chromosome alone is insufficient to assign the sex of their unborn child or, as in any unborn child, say anything about the child’s future gender identity.Expecting parents can be counselled by the clinical geneticist and the psychologist from the DSD team, although other DSD specialists can also be involved.

The clinical geneticist should be experienced in prenatal counselling and well informed about the diagnostic possibilities given the limited time span in kamagra pill cost which test results need to be available to allow parents to make a well-informed decision about whether or not to continue the pregnancy. Termination of pregnancy can be considered, for instance, in a syndromic form of DSD with multiple malformations, but when the DSD occurs as kamagra pill cost an apparently isolated condition, expecting parents may also consider termination of pregnancy, which, although considered controversial by some, is legal in Belgium and the Netherlands. The psychologist of the DSD team can support parents during and after pregnancy and help them cope with feelings of uncertainty and eventual considerations of a termination of pregnancy, as well as with practical issues, for example, how to inform others. The stress of not knowing exactly what the child’s kamagra pill cost genitalia will look like and uncertainty about the diagnosis, treatment and prognosis cannot be avoided completely. Parents are informed that if the postnatal phenotype is different from what was prenatally expected, the advice given about diagnostic testing can be adjusted accordingly, for example, if a hypospadias is milder than was expected based on prenatal ultrasound images.

In our experience, parents appreciate having already spoken to some members of the DSD team during pregnancy kamagra pill cost and having a contact person before birth.After expert prenatal counselling, a significant number of pregnant couples decline prenatal testing (personal experience IALG, MK, ABD, YvB, MC and HC-vdG). At birth, umbilical cord blood is a good source for (molecular) karyotyping and storage of DNA and can be obtained by the obstetrician, midwife or neonatologist. The terminology used in communication with parents should be carefully chosen,22 23 and midwives and staff of neonatal and delivery units should be clearly instructed to kamagra pill cost use gender-neutral and non-stigmatising vocabulary (eg, ‘your baby’) as long as sex assignment is pending.An algorithm for diagnostic evaluation of a suspected DSD in the prenatal situation is proposed in figure 1. When couples opt for invasive prenatal diagnosis, the genetic analysis usually involves an (SNP)-array. It was recently estimated that >30% of individuals who have a DSD have additional structural anomalies, with cardiac and neurological anomalies and fetal growth restriction being particularly common.27 28 If additional anomalies are seen, the geneticist can consider specific gene defects that may underlie a known genetic kamagra pill cost syndrome or carry out NGS.

NGS-based techniques have also now made their appearance in prenatal diagnosis of congenital anomalies.29 30 Panels using these techniques can be specific for genes involved in DSD, or be larger panels covering multiple congenital anomalies, and are usually employed with trio-analysis to compare variants identified in the child with the parents’ genetics.29–31 Finding a genetic cause before delivery can help reduce parental stress in the neonatal period and speed up decisions regarding gender assignment. In such cases there is no tight time limit, and we propose completing the analysis well before the expected delivery.Disorders/differences of sex development (DSD) in kamagra pill cost the prenatal setting. A diagnostic algorithm. *SOX9. Upstream anomalies and balanced translocations at promotor sites!.

Conventional karyotyping can be useful. NGS, next-generation sequencing." data-icon-position data-hide-link-title="0">Figure 1 Disorders/differences of sex development (DSD) in the prenatal setting. A diagnostic algorithm. *SOX9. Upstream anomalies and balanced translocations at promotor sites!.

Conventional karyotyping can be useful. NGS, next-generation sequencing.First contact by a professional less experienced in DSDWhereas most current guidelines start from the point when an individual has been referred to the DSD team,1 15 the Dutch-Flemish guideline dedicates a chapter to healthcare professionals less experienced in DSD as they are often the first to suspect or identify such a condition. Apart from the paper of Indyk,7 little guidance is available for these professionals about how to act in such a situation. The chapter in the Dutch-Flemish guideline summarises the various clinical presentations that a DSD can have and provides information on how to communicate with parents and/or patients about the findings of the physical examination, the first-line investigations and the need for prompt referral to a specialised centre for further evaluation. Clinical examples are offered to illustrate some of these recurring situations.

The medical issues in DSD can be very challenging, and the social and psychological impact is high. For neonates with ambiguous genitalia, sex assignment is an urgent and crucial issue, and it is mandatory that parents are informed that it is possible to postpone registration of their child’s sex. In cases where sex assignment has already taken place, the message that the development of the gonads or genitalia is still atypical is complicated and distressing for patients and parents or carers. A list of contact details for DSD centres and patient organisations in the Netherlands and Flanders is attached to the Dutch-Flemish guideline. Publishing such a list, either in guidelines or online, can help healthcare professionals find the nearest centres for consultations and provide patients and patient organisations with an overview of the centres where expertise is available.Timing and place of genetic testing using NGS-based gene panelsThe diagnostic workup that is proposed for 46,XX and 46,XY DSD is shown in figures 2 and 3, respectively.

Even with the rapidly expanding molecular possibilities, a (family) history and a physical examination remain the essential first steps in the diagnostic process. Biochemical and hormonal screening aim at investigating serum electrolytes, renal function and the hypothalamic-pituitary-gonadal and hypothalamic-pituitary-adrenal axes. Ultrasound screening of kidneys and internal genitalia, as well as establishing genotypic sex, should be accomplished within 48 hours and complete the baseline diagnostic work-up of a child born with ambiguous genitalia.1 16 32 3346,XX disorders/differences of sex development (DSD) in the postnatal setting. A diagnostic algorithm. NGS, next-generation sequencing.

CAH, Congenital adrenal hyperplasia. AMH, Anti-Müllerian Hormone." data-icon-position data-hide-link-title="0">Figure 2 46,XX disorders/differences of sex development (DSD) in the postnatal setting. A diagnostic algorithm. NGS, next-generation sequencing. CAH, Congenital adrenal hyperplasia.

AMH, Anti-Müllerian Hormone.46,XY disorders/differences of sex development (DSD) in the postnatal setting. A diagnostic algorithm. * SOX9. Upstream anomalies and balanced translocations at promotor sites!. Conventional karyotyping can be useful.

NGS, next-generation sequencing." data-icon-position data-hide-link-title="0">Figure 3 46,XY disorders/differences of sex development (DSD) in the postnatal setting. A diagnostic algorithm. *SOX9. Upstream anomalies and balanced translocations at promotor sites!. Conventional karyotyping can be useful.

NGS, next-generation sequencing.Very recently, a European position paper has been published focusing on the genetic workup of DSD.16 It highlights the limitations and drawbacks of NGS-based tests, which include the chance of missing subtle structural variants such as CNVs and mosaicism and the fact that NGS cannot detect methylation defects or other epigenetic changes.16 28 31 Targeted DNA analysis is preferred in cases where hormonal investigations suggest a block in steroidogenesis (eg, 11-β-hydroxylase deficiency, 21-hydroxylase deficiency), or in the context of a specific clinical constellation such as the often coincidental finding of Müllerian structures in a boy with normal external genitalia or cryptorchidism, that is, persistent Müllerian duct syndrome.33 34 Alternative tests should also be considered depending on the available information. Sometimes, a simple mouth swab for FISH analysis can detect mosaic XY/X in a male with hypospadias or asymmetric gonadal development or in a female with little or no Turner syndrome stigmata and a normal male molecular karyotyping profile or peripheral blood karyotype. Such targeted testing avoids incidental findings and is cheaper and faster than analysis of a large NGS-based panel, although the cost difference is rapidly declining.However, due to the genetic and phenotypic heterogeneity of DSD conditions, the most cost-effective next steps in the majority of cases are whole exome sequencing followed by panel analysis of genes involved in genital development and function or trio-analysis of a large gene panel (such as a Mendeliome).16 35–38 Pretest genetic counselling involves discussing what kind of information will be reported to patients or parents and the chance of detecting VUS, and the small risk of incidental findings when analysing a DSD panel should be mentioned. Laboratories also differ in what class of variants they report.39 In our experience, the fear of incidental findings is a major reason why some parents refrain from genetic testing.Timing of the DSD gene panel analysis is also important. While some patients or parents prefer that all diagnostic procedures be performed as soon as possible, others need time to reflect on the complex information related to more extensive genetic testing and on its possible consequences.

If parents or patients do not consent to panel-based genetic testing, analysis of specific genes, such as WT1, should be considered when appropriate in view of the clinical consequences if a mutation is present (eg, clinical surveillance of renal function and screening for Wilms’ tumour in the case of WT1 mutations). Genes that are more frequently involved in DSD (eg, SRY, NR5A1) and that match the specific clinical and hormonal features in a given patient could also be considered for sequencing. Targeted gene analysis may also be preferred in centres located in countries that do not have the resources or technical requirements to perform NGS panel-based genetic testing. Alternatively, participation by these centres in international collaborative networks may allow them to outsource the molecular genetic workup abroad.Gene panels differ between centres and are regularly updated based on scientific progress. A comparison of DSD gene panels used in recent studies can be found at https://www.nature.com/articles/s41574-018-0010-8%23Sec46.15 The panels currently used at the coauthors’ institutions can be found on their respective websites.

Given the pace of change, it is important to regularly consider repeating analysis in patients with an unexplained DSD, for example, when they transition into adult care or when they move from one centre to another. This also applies to patients in whom a clinical diagnosis has never been genetically confirmed. Confusion may arise when the diagnosis cannot be confirmed or when a mutation is identified in a different gene, for example, NR5A1 in someone with a clinical diagnosis of CAIS that has other consequences for relatives. Hence, new genetic counselling should always accompany new diagnostic endeavours.Class 3 variants and histopathological examinationsThe rapidly evolving diagnostic possibilities raise new questions. What do laboratories report?.

How should we deal with the frequent findings of mainly unique VUS or class 3 variants (ACMG recommendation) in the many different DSD-related genes in the diagnostic setting?. Reporting VUS can be a source of uncertainty for parents, but not reporting these variants precludes further investigations to determine their possible pathogenicity. It can also be difficult to prove variant pathogenicity, both on gene-level and variant-level.39 Moreover, given the gonad-specific expression of some genes and the variable phenotypic spectrum and reduced penetrance, segregation analysis is not always informative. A class 3 variant that does not fit the clinical presentation may be unrelated to the observed phenotype, but it could also represent a newly emerging phenotype. This was recently demonstrated by the identification of the NR5A1 mutation, R92W, in individuals with 46,XX testicular and ovotesticular DSD.40 This gene had previously been associated with 46,XY DSD.

In diagnostic laboratories, there is usually no capacity or expertise to conduct large-scale functional studies to determine pathogenicity of these unique class 3 VUS in the different genes involved in DSD. Functional validation of variants identified in novel genes may be more attractive in a research context. However, for individual families with VUS in well-established DSD genes such as AR or HSD17B3, functional analysis may provide a confirmed diagnosis that implies for relatives the option of undergoing their own DNA analysis and estimating the genetic risk of their own future offspring. This makes genetic follow-up important in these cases and demonstrates the usefulness of international databases and networks and the centralisation of functional studies of genetic variants in order to reduce costs and maximise expertise.The same is true for histopathological description, germ-cell tumour risk assessment in specific forms of DSD and classification of gonadal samples. Germ-cell tumour risk is related to the type of DSD (among other factors), but it is impossible to make risk estimates in individual cases.41–44 Gonadectomy may be indicated in cases with high-risk dysgenetic abdominal gonads that cannot be brought into a stable superficial (ie, inguinal, labioscrotal) position that allows clinical or radiological surveillance, or to avoid virilisation due to 5-alpha reductase deficiency in a 46,XY girl with a stable female gender identity.45 Pathological examination of DSD gonads requires specific expertise.

For example, the differentiation between benign germ cell abnormalities, such as delayed maturation and (pre)malignant development of germ cells, is crucial for clinical management but can be very troublesome.46 Centralised pathological examination of gonadal biopsy and gonadectomy samples in one centre, or a restricted number of centres, on a national scale can help to overcome the problem of non-uniform classification and has proven feasible in the Netherlands and Belgium. We therefore believe that uniform assessment and classification of gonadal differentiation patterns should also be addressed in guidelines on DSD management.International databases of gonadal tissues are crucial for learning more about the risk of malignancy in different forms of DSD, but they are only reliable if uniform criteria for histological classification are strictly applied.46 These criteria could be incorporated in many existing networks such as the I-DSD consortium, the Disorders of Sex Development Translational Research Network, the European Reference Network on Urogenital Diseases (eUROGEN), the EndoERN and COST actions.15–17 47Communication at the transition from paediatric to adult carePaediatric and adult teams need to collaborate closely to facilitate a well-organised transition from paediatric to adult specialist care.15 48–50 Both teams need to exchange information optimally and should consider transition as a longitudinal process rather than a fixed moment in time. Age-appropriate information is key at all ages, and an overview of topics to be discussed at each stage is described by Cools et al.15 Table 1 shows an example of how transition can be organised.View this table:Table 1 Example of transition table as used in the DSD clinic of the Erasmus Medical CenterPsychological support and the continued provision of information remains important for individuals with a DSD at all ages.15 22 In addition to the information given by the DSD team members, families and patients can benefit from resources such as support groups and information available on the internet.47 Information available online should be checked for accuracy and completeness when referring patients and parents to internet sites.Recommendations for future actionsMost guidelines and articles on the diagnosis and management of DSD are aimed at specialists and are only published in specialist journals or on websites for endocrinologists, urologists or geneticists. Yet there is a need for guidelines directed towards first-line and second-line healthcare workers that summarise the recommendations about the first crucial steps in the management of DSD. These should be published in widely available general medical journals and online, along with a national list of DSD centres.

Furthermore, DSD (expert) centres should provide continuous education to all those who may be involved in the identification of individuals with a DSD in order to enable these healthcare professionals to recognise atypical genitalia, to promptly refer individuals who have a DSD and to inform the patient and parents about this and subsequent diagnostic procedures.As DSD continues to be a rare condition, it will take time to evaluate the effects of having such a guideline on the preparedness of first-line and second-line healthcare workers to recognise DSD conditions. One way to evaluate this might be the development and use of questionnaires asking patients, carers and families and referring physicians how satisfied they were with the initial medical consultation and referral and what could be improved. A helpful addition to existing international databases that collect information on genetic variations would be a list of centres that offer suitable functional studies for certain genes, ideally covering the most frequently mutated genes (at minimum).Patient organisations can also play an important role in informing patients about newly available diagnostic or therapeutic strategies and options, and their influence and specific role has now been recognised and discussed in several publications.17 47 However, it should be kept in mind that these organisations do not represent all patients, as a substantial number of patients and parents are not member of such an organisation.Professionals have to provide optimal medical care based on well-established evidence, or at least on broad consensus. Yet not everything can be regulated by recommendations and guidelines. Options, ideas and wishes should be openly discussed between professionals, patients and families within their confidential relationship.

This will enable highly individualised holistic care tailored to the patient’s needs and expectations. Once they are well-informed of all available options, parents and/or patients can choose what they consider the optimal care for their children or themselves.15 16ConclusionThe Dutch-Flemish guideline uniquely addresses some topics that are under-represented in the literature, thus adding some key aspects to those addressed in recent consensus papers and guidelines.15–17 33 47As more children with a DSD are now being identified prenatally, and the literature on prenatal diagnosis of DSD remains scarce,20 21 we propose a prenatal diagnostic algorithm and emphasise the importance of having a prenatal specialist involved in or collaborating with DSD (expert) centres.We also stress that good communication between all involved parties is essential. Professionals should be well informed about protocols and communication. Collaboration between centres is necessary to optimise aspects of care such as uniform interpretation of gonadal pathology and functional testing of class 3 variants found by genetic testing. Guidelines can provide a framework within which individualised patient care should be discussed with all stakeholders.AcknowledgmentsThe authors would like to thank the colleagues of the DSD teams for their input in and critical reading of the Dutch-Flemish guideline.

Amsterdam University Center (AMC and VU), Maastricht University Medical Center, Erasmus Medical Center Rotterdam, Radboud University Medical Center Nijmegen, University Medical Center Groningen, University Medical Center Utrecht, Ghent University Hospital. The authors would like to thank Kate McIntyre for editing the revised manuscript and Tom de Vries Lentsch for providing the figures as a PDF. Three of the authors of this publication are members of the European Reference Network for rare endocrine diseases—Project ID 739543.IntroductionEndometrial cancer is the most common gynaecological malignancy in the developed world.1 Its incidence has risen over the last two decades as a consequence of the ageing population, fewer hysterectomies for benign disease and the obesity epidemic. In the USA, it is estimated that women have a 1 in 35 lifetime risk of endometrial cancer, and in contrast to cancers of most other sites, cancer-specific mortality has risen by https://www.epide.fr/buy-kamagra-online-cheap/ approximately 2% every year since 2008 related to the rapidly rising incidence.2Endometrial cancer has traditionally been classified into type I and type II based on morphology.3 The more common subtype, type I, is mostly comprised of endometrioid tumours and is oestrogen-driven, arises from a hyperplastic endometrium, presents at an early stage and has an excellent 5 year survival rate.4 By contrast, type II includes non-endometrioid tumours, specifically serous, carcinosarcoma and clear cell subtypes, which are biologically aggressive tumours with a poor prognosis that are often diagnosed at an advanced stage.5 Recent efforts have focused on a molecular classification system for more accurate categorisation of endometrial tumours into four groups with distinct prognostic profiles.6 7The majority of endometrial cancers arise through the interplay of familial, genetic and lifestyle factors. Two inherited cancer predisposition syndromes, Lynch syndrome and the much rarer Cowden syndrome, substantially increase the lifetime risk of endometrial cancer, but these only account for around 3–5% of cases.8–10 Having first or second degree relative(s) with endometrial or colorectal cancer increases endometrial cancer risk, although a large European twin study failed to demonstrate a strong heritable link.11 The authors failed to show that there was greater concordance in monozygotic than dizygotic twins, but the study was based on relatively small numbers of endometrial cancers.

Lu and colleagues reported an association between common single nucleotide polymorphisms (SNPs) and endometrial cancer risk, revealing the potential role of SNPs in explaining part of the risk in both the familial and general populations.12 Thus far, many SNPs have been reported to modify susceptibility to endometrial cancer. However, much of this work predated genome wide association studies and is of variable quality. Understanding genetic predisposition to endometrial cancer could facilitate personalised risk assessment with a view to targeted prevention and screening interventions.13 This emerged as the most important unanswered research question in endometrial cancer according to patients, carers and healthcare professionals in our recently completed James Lind Womb Cancer Alliance Priority Setting Partnership.14 It would be particularly useful for non-endometrioid endometrial cancers, for which advancing age is so far the only predictor.15We therefore conducted a comprehensive systematic review of the literature to provide an overview of the relationship between SNPs and endometrial cancer risk. We compiled a list of the most robust endometrial cancer-associated SNPs. We assessed the applicability of this panel of SNPs with a theoretical polygenic risk score (PRS) calculation.

We also critically appraised the meta-analyses investigating the most frequently reported SNPs in MDM2. Finally, we described all SNPs reported within genes and pathways that are likely involved in endometrial carcinogenesis and metastasis.MethodsOur systematic review follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) collaboration 2009 recommendations. The registered protocol is available through PROSPERO (CRD42018091907).16Search strategyWe searched Embase, MEDLINE and Cumulative Index to Nursing and Allied Health Literature (CINAHL) databases via the Healthcare Databases Advanced Search (HDAS) platform, from 2007 to 2018, to identify studies reporting associations between polymorphisms and endometrial cancer risk. Key words including MeSH (Medical Subject Heading) terms and free-text words were searched in both titles and abstracts. The following terms were used.

€œendomet*”,“uter*”, “womb”, “cancer(s)”, “neoplasm(s)”, “endometrium tumour”, “carcinoma”, “adenosarcoma”, “clear cell carcinoma”, “carcinosarcoma”, “SNP”, “single nucleotide polymorphism”, “GWAS”, and “genome-wide association study/ies”. No other restrictions were applied. The search was repeated with time restrictions between 2018 and June 2019 to capture any recent publications.Eligibility criteriaStudies were selected for full-text evaluation if they were primary articles investigating a relationship between endometrial cancer and SNPs. Study outcome was either the increased or decreased risk of endometrial cancer relative to controls reported as an odds ratio (OR) with corresponding 95% confidence intervals (95% CIs).Study selectionThree independent reviewers screened all articles uploaded to a screening spreadsheet developed by Helena VonVille.17 Disagreements were resolved by discussion. Chronbach’s α score was calculated between reviewers and indicated high consistency at 0.92.

Case–control, prospective and retrospective studies, genome-wide association studies (GWAS), and both discovery and validation studies were selected for full-text evaluation. Non-English articles, editorials, conference abstracts and proceedings, letters and correspondence, case reports and review articles were excluded.Candidate-gene studies with at least 100 women and GWAS with at least 1000 women in the case arm were selected to ensure reliability of the results, as explained by Spencer et al.18 To construct a panel of up to 30 SNPs with the strongest evidence of association, those with the strongest p values were selected. For the purpose of an SNP panel, articles utilising broad European or multi-ethnic cohorts were selected. Where overlapping populations were identified, the most comprehensive study was included.Data extraction and synthesisFor each study, the following data were extracted. SNP ID, nearby gene(s)/chromosome location, OR (95% CI), p value, minor or effect allele frequency (MAF/EAF), EA (effect allele) and OA (other allele), adjustment, ethnicity and ancestry, number of cases and controls, endometrial cancer type, and study type including discovery or validation study and meta-analysis.

For risk estimates, a preference towards most adjusted results was applied. For candidate-gene studies, a standard p value of<0.05 was applied and for GWAS a p value of <5×10-8, indicating genome-wide significance, was accepted as statistically significant. However, due to the limited number of SNPs with p values reaching genome-wide significance, this threshold was then lowered to <1×10-5, allowing for marginally significant SNPs to be included. As shown by Mavaddat et al, for breast cancer, SNPs that fall below genome-wide significance may still be useful for generating a PRS and improving the models.19We estimated the potential value of a PRS based on the most significant SNPs by comparing the predicted risk for a woman with a risk score in the top 1% of the distribution to the mean predicted risk. Per-allele ORs and MAFs were taken from the publications and standard errors (SEs) for the lnORs were derived from published 95% CIs.

The PRS was assumed to have a Normal distribution, with mean 2∑βipI and SE, σ, equal to √2∑βi2pI(1−pi), according to the binomial distribution, where the summation is over all SNPs in the risk score. Hence the relative risk (RR) comparing the top 1% of the distribution to the mean is given by exp(Z0.01σ), where Z is the inverse of the standard normal cumulative distribution.ResultsThe flow chart of study selection is illustrated in figure 1. In total, 453 text articles were evaluated and, of those, 149 articles met our inclusion criteria. One study was excluded from table 1, for having an Asian-only population, as this would make it harder to compare with the rest of the results which were all either multi-ethnic or Caucasian cohorts, as stated in our inclusion criteria for the SNP panel.20 Any SNPs without 95% CIs were also excluded from any downstream analysis. Additionally, SNPs in linkage disequilibrium (r2 >0.2) with each other were examined, and of those in linkage disequilibrium, the SNP with strongest association was reported.

Per allele ORs were used unless stated otherwise.View this table:Table 1 List of top SNPs most likely to contribute to endometrial cancer risk identified through systematic review of recent literature21–25Study selection flow diagram. *Reasons. Irrelevant articles, articles focusing on other conditions, non-GWAS/candidate-gene study related articles, technical and duplicate articles. GWAS, genome-wide association study. Adapted from.

Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group (2009). Preferred Reporting Items for Systematic Reviews and Meta-Analyses. The PRISMA Statement. PLoS Med 6(6). E1000097.

Doi:10.1371/journal.pmed1000097." data-icon-position data-hide-link-title="0">Figure 1 Study selection flow diagram. *Reasons. Irrelevant articles, articles focusing on other conditions, non-GWAS/candidate-gene study related articles, technical and duplicate articles. GWAS, genome-wide association study. Adapted from.

Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group (2009). Preferred Reporting Items for Systematic Reviews and Meta-Analyses. The PRISMA Statement. PLoS Med 6(6). E1000097.

Doi:10.1371/journal.pmed1000097.Top SNPs associated with endometrial cancer riskFollowing careful interpretation of the data, 24 independent SNPs with the lowest p values that showed the strongest association with endometrial cancer were obtained (table 1).21–25 These SNPs are located in or around genes coding for transcription factors, cell growth and apoptosis regulators, and enzymes involved in the steroidogenesis pathway. All the SNPs presented here were reported on the basis of a GWAS or in one case, an exome-wide association study, and hence no SNPs from candidate-gene studies made it to the list. This is partly due to the nature of larger GWAS providing more comprehensive and powered results as opposed to candidate gene studies. Additionally, a vast majority of SNPs reported by candidate-gene studies were later refuted by large-scale GWAS such as in the case of TERT and MDM2 variants.26 27 The exception to this is the CYP19 gene, where candidate-gene studies reported an association between variants in this gene with endometrial cancer in both Asian and broad European populations, and this association was more recently confirmed by large-scale GWAS.21 28–30 Moreover, a recent article authored by O’Mara and colleagues reviewed the GWAS that identified most of the currently known SNPs associated with endometrial cancer.31Most of the studies represented in table 1 are GWAS and the majority of these involved broad European populations. Those having a multi-ethnic cohort also consisted primarily of broad European populations.

Only four of the variants in table 1 are located in coding regions of a gene, or in regulatory flanking regions around the gene. Thus, most of these variants would not be expected to cause any functional effects on the gene or the resulting protein. An eQTL search using GTEx Portal showed that some of the SNPs are significantly associated (p<0.05) with modified transcription levels of the respective genes in various tissues such as prostate (rs11263761), thyroid (rs9668337), pituitary (rs2747716), breast mammary (rs882380) and testicular (rs2498794) tissue, as summarised in table 2.View this table:Table 2 List of eQTL hits for the selected panel of SNPsThe only variant for which there was an indication of a specific association with non-endometrioid endometrial cancer was rs148261157 near the BCL11A gene. The A allele of this SNP had a moderately higher association in the non-endometrioid arm (OR 1.64, 95% CI 1.32 to 2.04. P=9.6×10-6) compared with the endometrioid arm (OR 1.25, 95% CI 1.14 to 1.38.

P=4.7×10-6).21Oestrogen receptors α and β encoded by ESR1 and ESR2, respectively, have been extensively studied due to the assumed role of oestrogens in the development of endometrial cancer. O’Mara et al reported a lead SNP (rs79575945) in the ESR1 region that was associated with endometrial cancer (p=1.86×10-5).24 However, this SNP did not reach genome-wide significance in a more recent larger GWAS.21 No statistically significant associations have been reported between endometrial cancer and SNPs in the ESR2 gene region.AKT is an oncogene linked to endometrial carcinogenesis. It is involved in the PI3K/AKT/mTOR pro-proliferative signalling pathway to inactivate apoptosis and allow cell survival. The A allele of rs2494737 and G allele of rs2498796 were reported to be associated with increased and decreased risk of endometrial cancer in 2016, respectively.22 30 However, this association was not replicated in a larger GWAS in 2018.21 Nevertheless, given the previous strong indications, and biological basis that could explain endometrial carcinogenesis, we decided to include an AKT1 variant (rs2498794) in our results.PTEN is a multi-functional tumour suppressor gene that regulates the AKT/PKB signalling pathway and is commonly mutated in many cancers including endometrial cancer.32 Loss-of-function germline mutations in PTEN are responsible for Cowden syndrome, which exerts a lifetime risk of endometrial cancer of up to 28%.9 Lacey and colleagues studied SNPs in the PTEN gene region. However, none showed significant differences in frequency between 447 endometrial cancer cases and 439 controls of European ancestry.33KRAS mutations are known to be present in endometrial cancer.

These can be activated by high levels of KLF5 (transcriptional activator). Three SNPs have been identified in or around KLF5 that are associated with endometrial cancer. The G allele of rs11841589 (OR 1.15, 95% CI 1.11 to 1.21. P=4.83×10-11), the A allele of rs9600103 (OR 1.23, 95% CI 1.16 to 1.30. P=3.76×10-12) and C allele of rs7981863 (OR 1.16, 95% CI 1.12 to 1.20.

P=2.70×10-17) have all been found to be associated with an increased likelihood of endometrial cancer in large European cohorts.21 30 34 It is worth noting that these SNPs are not independent, and hence they quite possibly tag the same causal variant.The MYC family of proto-oncogenes encode transcription factors that regulate cell proliferation, which can contribute to cancer development if dysregulated. The recent GWAS by O’Mara et al reported three SNPs within the MYC region that reached genome-wide significance with conditional p values reaching at least 5×10–8.35To test the utility of these SNPs as predictive markers, we devised a theoretical PRS calculation using the log ORs and EAFs per SNP from the published data. The results were very encouraging with an RR of 3.16 for the top 1% versus the mean, using all the top SNPs presented in table 1 and 2.09 when using only the SNPs that reached genome-wide significance (including AKT1).Controversy surrounding MDM2 variant SNP309MDM2 negatively regulates tumour suppressor gene TP53, and as such, has been extensively studied in relation to its potential role in predisposition to endometrial cancer. Our search identified six original studies of the association between MDM2 SNP rs2279744 (also referred to as SNP309) and endometrial cancer, all of which found a statistically significant increased risk per copy of the G allele. Two more original studies were identified through our full-text evaluation.

However, these were not included here as they did not meet our inclusion criteria—one due to small sample size, the other due to studying rs2279744 status dependent on another SNP.36 37 Even so, the two studies were described in multiple meta-analyses that are listed in table 3. Different permutations of these eight original studies appear in at least eight published meta-analyses. However, even the largest meta-analysis contained <2000 cases (table 3)38View this table:Table 3 Characteristics of studies that examined MDM2 SNP rs2279744In comparison, a GWAS including nearly 13 000 cases found no evidence of an association with OR and corresponding 95% CI of 1.00 (0.97 to 1.03) and a p value of 0.93 (personal communication).21 Nevertheless, we cannot completely rule out a role for MDM2 variants in endometrial cancer predisposition as the candidate-gene studies reported larger effects in Asians, whereas the GWAS primarily contained participants of European ancestry. There is also some suggestion that the SNP309 variant is in linkage disequilibrium with another variant, SNP285, which confers an opposite effect.It is worth noting that the SNP285C/SNP309G haplotype frequency was observed in up to 8% of Europeans, thus requiring correction for the confounding effect of SNP285C in European studies.39 However, aside from one study conducted by Knappskog et al, no other study including the meta-analyses corrected for the confounding effect of SNP285.40 Among the studies presented in table 3, Knappskog et al (2012) reported that after correcting for SNP285, the OR for association of this haplotype with endometrial cancer was much lower, though still significant. Unfortunately, the meta-analyses which synthesised Knappskog et al (2012), as part of their analysis, did not correct for SNP285C in the European-based studies they included.38 41 42 It is also concerning that two meta-analyses using the same primary articles failed to report the same result, in two instances.38 42–44DiscussionThis article represents the most comprehensive systematic review to date, regarding critical appraisal of the available evidence of common low-penetrance variants implicated in predisposition to endometrial cancer.

We have identified the most robust SNPs in the context of endometrial cancer risk. Of those, only 19 were significant at genome-wide level and a further five were considered marginally significant. The largest GWAS conducted in this field was the discovery- and meta-GWAS by O’Mara et al, which utilised 12 096 cases and 108 979 controls.21 Despite the inclusion of all published GWAS and around 5000 newly genotyped cases, the total number did not reach anywhere near what is currently available for other common cancers such as breast cancer. For instance, BCAC (Breast Cancer Association Consortium) stands at well over 200 000 individuals with more than half being cases, and resulted in identification of ~170 SNPs in relation to breast cancer.19 45 A total of 313 SNPs including imputations were then used to derive a PRS for breast cancer.19 Therefore, further efforts should be directed to recruit more patients, with deep phenotypic clinical data to allow for relevant adjustments and subgroup analyses to be conducted for better precision.A recent pre-print study by Zhang and colleagues examined the polygenicity and potential for SNP-based risk prediction for 14 common cancers, including endometrial cancer, using available summary-level data from European-ancestry datasets.46 They estimated that there are just over 1000 independent endometrial cancer susceptibility SNPs, and that a PRS comprising all such SNPs would have an area under the receiver-operator curve of 0.64, similar to that predicted for ovarian cancer, but lower than that for the other cancers in the study. The modelling in the paper suggests that an endometrial cancer GWAS double the size of the current largest study would be able to identify susceptibility SNPs together explaining 40% of the genetic variance, but that in order to explain 75% of the genetic variance it would be necessary to have a GWAS comprising close to 150 000 cases and controls, far in excess of what is currently feasible.We found that the literature consists mainly of candidate-gene studies with small sample sizes, meta-analyses reporting conflicting results despite using the same set of primary articles, and multiple reports of significant SNPs that have not been validated by any larger GWAS.

The candidate-gene studies were indeed the most useful and cheaper technique available until the mid to late 2000s. However, a lack of reproducibility (particularly due to population stratification and reporting bias), uncertainty of reported associations, and considerably high false discovery rates make these studies much less appropriate in the post-GWAS era. Unlike the candidate-gene approach, GWAS do not require prior knowledge, selection of genes or SNPs, and provide vast amounts of data. Furthermore, both the genotyping process and data analysis phases have become cheaper, the latter particularly due to faster and open-access pre-phasing and imputation tools being made available.It is clear from table 1 that some SNPs were reported with wide 95% CI, which can be directly attributed to small sample sizes particularly when restricting the cases to non-endometrioid histology only, low EAF or poor imputation quality. Thus, these should be interpreted with caution.

Additionally, most of the SNPs reported by candidate-gene studies were not detected by the largest GWAS to date conducted by O’Mara et al.21 However, this does not necessarily mean that the possibility of those SNPs being relevant should be completely dismissed. Moreover, meta-analyses were attempted for other variants. However, these showed no statistically significant association and many presented with high heterogeneity between the respective studies (data not shown). Furthermore, as many studies utilised the same set of cases and/or controls, conducting a meta-analysis was not possible for a good number of SNPs. It is therefore unequivocal that the literature is crowded with numerous small candidate-gene studies and conflicting data.

This makes it particularly hard to detect novel SNPs and conduct meaningful meta-analyses.We found convincing evidence for 19 variants that indicated the strongest association with endometrial cancer, as shown in table 1. The associations between endometrial cancer and variants in or around HNF1B, CYP19A1, SOX4, MYC, KLF and EIF2AK found in earlier GWAS were then replicated in the latest and largest GWAS. These SNPs showed promising potential in a theoretical PRS we devised based on published data. Using all 24 or genome-wide significant SNPs only, women with a PRS in the top 1% of the distribution would be predicted to have a risk of endometrial cancer 3.16 and 2.09 times higher than the mean risk, respectively.However, the importance of these variants and relevance of the proximate genes in a functional or biological context is challenging to evaluate. Long distance promoter regulation by enhancers may disguise the genuine target gene.

In addition, enhancers often do not loop to the nearest gene, further complicating the relevance of nearby gene(s) to a GWAS hit. In order to elucidate biologically relevant candidate target genes in endometrial cancer, O’Mara et al looked into promoter-associated chromatin looping using a modern HiChIP approach.47 The authors utilised normal and tumoural endometrial cell lines for this analysis which showed significant enrichment for endometrial cancer heritability, with 103 candidate target genes identified across the 13 risk loci identified by the largest ECAC GWAS. Notable genes identified here were CDKN2A and WT1, and their antisense counterparts. The former was reported to be nearby of rs1679014 and the latter of rs10835920, as shown in table 1. Moreover, of the 36 candidate target genes, 17 were found to be downregulated while 19 were upregulated in endometrial tumours.The authors also investigated overlap between the 13 endometrial cancer risk loci and top eQTL variants for each target gene.47 In whole blood, of the two particular lead SNPs, rs8822380 at 17q21.32 was a top eQTL for SNX11 and HOXB2, whereas rs937213 at 15q15.1 was a top eQTL for SRP14.

In endometrial tumour, rs7579014 at 2p16.1 was found to be a top eQTL for BCL11A. This is particularly interesting because BCL11A was the only nearby/candidate gene that had a GWAS association reported in both endometrioid and non-endometrioid subtypes. The study looked at protein–protein interactions between endometrial cancer drivers and candidate target gene products. Significant interactions were observed with TP53 (most significant), AKT, PTEN, ESR1 and KRAS, among others. Finally, when 103 target candidate genes and 387 proteins were combined together, 462 pathways were found to be significantly enriched.

Many of these are related to gene regulation, cancer, obesity, insulinaemia and oestrogen exposure. This study clearly showed a potential biological relevance for some of the SNPs reported by ECAC GWAS in 2018.Most of the larger included studies used cohorts primarily composed of women of broad European descent. Hence, there are negligible data available for other ethnicities, particularly African women. This is compounded by the lack of reference genotype data available for comparative analysis, making it harder for research to be conducted in ethnicities other than Europeans. This poses a problem for developing risk prediction models that are equally valuable and predictive across populations.

Thus, our results also are of limited applicability to non-European populations.Furthermore, considering that non-endometrioid cases comprise a small proportion (~20%) of all endometrial cancer cases, much larger cohort sizes are needed to detect any genuine signals for non-endometrioid tumours. Most of the evaluated studies looked at either overall/mixed endometrial cancer subtypes or endometrioid histology, and those that looked at variant associations with non-endometrioid histology were unlikely to have enough power to detect any signal with statistical significance. This is particularly concerning because non-endometrioid subtypes are biologically aggressive tumours with a much poorer prognosis that contribute disproportionately to mortality from endometrial cancer. It is particularly important that attempts to improve early detection and prevention of endometrial cancer focus primarily on improving outcomes from these subtypes. It is also worth noting that, despite the current shift towards a molecular classification of endometrial cancer, most studies used the overarching classical Bokhman’s classification system, type I versus type II, or no histological classification system at all.

Therefore, it is important to create and follow a standardised and comprehensive classification system for reporting tumour subtypes for future studies.This study compiled and presented available information for an extensively studied, yet unproven in large datasets, SNP309 variant in MDM2. Currently, there is no convincing evidence for an association between this variant and endometrial cancer risk. Additionally, of all the studies, only one accounted for the opposing effect of a nearby variant SNP285 in their analyses. Thus, we conclude that until confirmed by a sufficiently large GWAS, this variant should not be considered significant in influencing the risk of endometrial cancer and therefore not included in a PRS. This is also true for the majority of the SNPs reported in candidate-gene studies, as the numbers fall far short of being able to detect genuine signals.This systematic review presents the most up-to-date evidence for endometrial cancer susceptibility variants, emphasising the need for further large-scale studies to identify more variants of importance, and validation of these associations.

Until data from larger and more diverse cohorts are available, the top 24 SNPs presented here are the most robust common genetic variants that affect endometrial cancer risk. The multiplicative effects of these SNPs could be used in a PRS to allow personalised risk prediction models to be developed for targeted screening and prevention interventions for women at greatest risk of endometrial cancer..