1
|
Frandsen CLB, Nøhr B, Gottschau M, Viuff JH, Maltesen T, Kjær SK, Svendsen PF, Jensen A. Polycystic ovary syndrome and risk of breast cancer in premenopausal and postmenopausal women: a nationwide population-based cohort study. Breast Cancer Res Treat 2024:10.1007/s10549-024-07467-8. [PMID: 39167287 DOI: 10.1007/s10549-024-07467-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 08/13/2024] [Indexed: 08/23/2024]
Abstract
PURPOSE Although some reproductive and metabolic characteristics of polycystic ovary syndrome (PCOS) are known risk factors for breast cancer, the evidence regarding a potential association between PCOS and breast cancer is scarce. In this population-based cohort study including all 1,719,452 women born in Denmark between 1940 and 1993, we investigated the association between PCOS and breast cancer. METHODS PCOS diagnoses, cancer diagnoses, covariates, migrations, and vital status were all obtained from national population and health registers. Hazard ratios (HR) and 95% confidence intervals (CI) for breast cancer overall and for histological subtypes separately were calculated based on adjusted cox proportional hazards models. RESULTS During a median follow-up of 26 years, 63,078 women were diagnosed with breast cancer. We found an increased risk of breast cancer overall among women with PCOS compared with women without PCOS (HR: 1.21, 95% CI 1.02-1.44). In analyses stratified for menopausal status, the increased risk was restricted to postmenopausal women (HR: 1.63, 95% CI 1.23-2.15). The results for ductal and lobular histological subtypes analyses separately resembled those observed for breast cancer overall. CONCLUSION This is the first study to report an increased risk of breast cancer among women with a history of PCOS. The increased risk was seemingly confined to postmenopausal women. Our results therefore contribute to an increased knowledge of the etiology of breast cancer, but our findings should be further confirmed in other large cohort studies with an appropriately long follow-up period.
Collapse
Affiliation(s)
- Clarissa L B Frandsen
- Virus, Lifestyle and Genes, Danish Cancer Institute, Strandboulevarden 49, 2100, Copenhagen, Denmark
- Department of Obstetrics and Gynecology, University Hospital of Herlev and Gentofte, Copenhagen, Denmark
| | - Bugge Nøhr
- Department of Obstetrics and Gynecology, University Hospital of Herlev and Gentofte, Copenhagen, Denmark
| | - Mathilde Gottschau
- Virus, Lifestyle and Genes, Danish Cancer Institute, Strandboulevarden 49, 2100, Copenhagen, Denmark
| | - Jakob H Viuff
- Diet, Cancer and Health, Danish Cancer Institute, Copenhagen, Denmark
| | - Thomas Maltesen
- Statistics and Data Analysis, Danish Cancer Institute, Copenhagen, Denmark
| | - Susanne K Kjær
- Virus, Lifestyle and Genes, Danish Cancer Institute, Strandboulevarden 49, 2100, Copenhagen, Denmark
- Department of Gynecology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Pernille F Svendsen
- Department of Obstetrics and Gynecology, University Hospital of Herlev and Gentofte, Copenhagen, Denmark
| | - Allan Jensen
- Virus, Lifestyle and Genes, Danish Cancer Institute, Strandboulevarden 49, 2100, Copenhagen, Denmark.
| |
Collapse
|
2
|
Lakkis NA, Abdallah RM, Musharrafieh UM, Issa HG, Osman MH. Epidemiology of Breast, Corpus Uteri, and Ovarian Cancers in Lebanon With Emphasis on Breast Cancer Incidence Trends and Risk Factors Compared to Regional and Global Rates. Cancer Control 2024; 31:10732748241236266. [PMID: 38419342 PMCID: PMC10903209 DOI: 10.1177/10732748241236266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 01/22/2024] [Accepted: 02/08/2024] [Indexed: 03/02/2024] Open
Abstract
OBJECTIVES This study explores the incidence and trends of breast (Bca), corpus uteri (CUca), and ovarian (Oca) cancer in Lebanon, a Middle Eastern country. It compares the Bca rates to regional and global ones and discusses Bca risk factors in Lebanon. INTRODUCTION Globally, Bca is the premier cause of cancer morbidity and mortality in women. METHODS Data on female Bca, CUca, and Oca published by the Lebanese national cancer registry were obtained (ie, for the years of 2005 to 2016). The age-standardized incidence rates (ASIRw) and age-specific rates per 100,000 female population were computed. RESULTS From 2005 to 2016, Bca, Oca, and CUca ranked first, sixth, and seventh, respectively, for cancer incidence among women in Lebanon. Bca alone accounted for 39.4% of all new female cancer cases. The ASIRw increased significantly for Bca and CUca (APC: 3.60 and 3.73, P < .05) but not for Oca (APC: 1.27, P > .05). The Bca ASIRw (per 100,000) increased significantly from 71.0 in 2005 to 115.6 in 2013 (P < .05), then decreased steadily but non-significantly to reach 96.8 in 2016 (P > .05). Lebanon's Bca ASIRw is comparable to developed countries. This may reflect altered sociological and reproductive patterns as the country transitions from regional to global trends. The five-year age-specific rates analysis revealed that Bca rates rose steeply from 35-39 to 50-54, dropped slightly between 55 and 64, then rose till 75+. The five-year age-specific rates between 35 and 54 among Lebanese women were amongst the highest worldwide from 2008 to 2012, even higher than the rates in Belgium, which had the highest ASIRw of Bca worldwide in 2020. CONCLUSION Lebanon's Bca ASIRw is among the highest globally. It's important to investigate the contributing factors and develop a national Bca control strategy. This study supports the national recommendation in initiating Bca screening at age 40 for women.
Collapse
Affiliation(s)
- Najla A. Lakkis
- Department of Family Medicine, American University of Beirut Medical Center (AUBMC), Beirut, Lebanon
| | - Reem M. Abdallah
- Department of Obstetrics and Gynecology, American University of Beirut Medical Center (AUBMC), Beirut, Lebanon
| | - Umayya M. Musharrafieh
- Department of Family Medicine, American University of Beirut Medical Center (AUBMC), Beirut, Lebanon
| | - Hanane G. Issa
- Institute of Health Informatics, University College London, London, UK
| | - Mona H. Osman
- Department of Family Medicine, American University of Beirut Medical Center (AUBMC), Beirut, Lebanon
| |
Collapse
|
3
|
Cao R, Chen L, Liu Y, Wang X, Ma R, Zhao Q, Du Y. Causal pathways linking polycystic ovary syndrome to distinct breast cancer subtypes through mediator factors: a multivariable mendelian randomization analysis. J Ovarian Res 2023; 16:215. [PMID: 37957709 PMCID: PMC10644512 DOI: 10.1186/s13048-023-01306-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 11/02/2023] [Indexed: 11/15/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) is an endocrine disorder characterized by ovarian cysts, high androgen levels, and irregular menstruation. The causality between PCOS and breast cancer (BC) has been widely discussed as they share a significant intersection in clinical manifestations. Previous epidemiological studies have not provided consistent conclusions in association between PCOS and BC, while mendelian randomization (MR) analyses have confirmed the causality between PCOS and estrogen receptor-positive breast cancer (ER + BC), but among a series of clinical manifestations resulting from PCOS, which related traits mediate the causal effect remains unknown. In this study, we conducted multivariable mendelian randomization (MVMR) analysis to explore the potential mediator variables in the mechanism linking PCOS to distinct subtypes of BC, and calculated the mediating effects proportion. We analyzed 13 PCOS-related traits and found that age at menopause may mediate PCOS-induced ER + BC (with -4.82% proportion) with a weak protective effect through the repair of DNA double-strand breaks by homologous recombination. This study helps to better comprehend the shared mechanisms contributing to the development of both PCOS and BC, and to screen high-risk populations for BC and take appropriate preventive measures.
Collapse
Affiliation(s)
- Runxiang Cao
- Breast Surgery Department, General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
| | - Lanlan Chen
- Hepatobiliary and Pancreatic Surgery Department, General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
| | - Yutong Liu
- Breast Surgery Department, General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
| | - Xuyutian Wang
- Breast Surgery Department, General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
| | - Ruolin Ma
- Breast Surgery Department, General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
| | - Qian Zhao
- Breast Surgery Department, General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China
| | - Ye Du
- Breast Surgery Department, General Surgery Center, First Hospital of Jilin University, Changchun, Jilin, China.
| |
Collapse
|
4
|
Zhang Z, Li L, Wu J. A Mendelian randomization-based approach to explore the relationship between leukocyte counts and breast cancer risk in European ethnic groups. Sci Rep 2023; 13:16979. [PMID: 37813992 PMCID: PMC10562486 DOI: 10.1038/s41598-023-44397-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 10/07/2023] [Indexed: 10/11/2023] Open
Abstract
Exploring the potential association between peripheral blood leukocyte counts and breast cancer risk by Mendelian randomization (MR) analysis methods. Genetic data related to peripheral blood sorting counts of leukocytes were collected from a genome-wide association study by Blood Cell Consortium (BCX). Single nucleotide polymorphic loci predicting peripheral blood sorting counts of these leukocytes were selected as instrumental variables according to the correlation assumption, independence assumption and exclusivity assumption of MR. The data on breast cancer and its subtypes were obtained from Breast Cancer Association Consortium (BCAC) and FinnGen Consortium. In this study, the Inverse-Variance Weighted (IVW), Weighted Median, MR-Egger, Maximum Likelihood (ML), MR-PRESSO and Constrained Maximum Likelihood and Model Averaging (cML-MA) methods of random effects models were used for MR analysis. Cochran's Q analysis, and MR-Egger intercept analysis were applied for sensitivity analysis. IVW and cML-MA were considered the primary analytical tools, and the results of the other 4 MRs were used as complementary and validation. The results suggest that there is no significant causal relationship between leukocyte count and breast cancer risk (IVW OR = 0.98 [95% CI: 0.93-1.03], p-value = 0.35; CML-MA OR = 1.01 [95% CI: 0.98-1.05], p-value = 0.51). In addition, we analyzed whether there was a potential correlation between the five main types of categorized leukocyte counts and different breast cancer subtypes. We did not find significant evidence to support a significant correlation between leukocyte counts and breast cancer subtypes.
Collapse
Affiliation(s)
- Zhitao Zhang
- Department of Breast, Fujian Maternity and Child Health Hospital, Fuzhou, China
| | - Lei Li
- Department of Pathology, University of Otago, Dunedin, 9016, New Zealand.
| | - Jianbin Wu
- Department of Breast, Fujian Maternity and Child Health Hospital, Fuzhou, China.
| |
Collapse
|
5
|
Şenkaya AR, Arı SA, Karaca İ, Kebapçı E, İsmailoğlu E, Öztekin DC. Association of polycystic ovary syndrome with mammographic density in Turkish women: a population-based case-control study. REVISTA DA ASSOCIACAO MEDICA BRASILEIRA (1992) 2023; 69:e20230138. [PMID: 37729221 PMCID: PMC10511288 DOI: 10.1590/1806-9282.20230138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 07/09/2023] [Indexed: 09/22/2023]
Abstract
OBJECTIVE The objective of this study was to investigate the breast densities and Breast Imaging-Reporting and Data System scores of patients with polycystic ovary syndrome and normoovulatory women and to determine whether these patients constitute a high-risk population for breast cancer. METHODS This retrospective case-control study was conducted at our institution between January 2022 and December 2022, involving patients diagnosed with polycystic ovary syndrome. Menstrual periods, hyperandrogenemic findings, and ultrasound reports of the patients were retrieved from our hospital's database. Patients who met at least two of the Rotterdam criteria were included in the polycystic ovary syndrome group. A total of 70 premenopausal patients over the age of 40 years, diagnosed with polycystic ovary syndrome, and 70 normoovulatory women, matched for age and body mass index, were included in the study. The two groups were compared regarding age at menarche, menstrual pattern, gravida, parity, levels of follicle-stimulating hormone, luteinizing hormone, and estradiol, endometrial thickness, breast density category, and Breast Imaging-Reporting and Data System classifications. RESULTS Patients in the polycystic ovary syndrome group had a higher age at menarche (12.7 vs. 12.3, p=0.006). There was no difference between the gonadotropin levels in both groups. However, the estradiol level was higher in the polycystic ovary syndrome group (p<0.001). There was no statistically significant difference between the two groups in terms of breast density and Breast Imaging-Reporting and Data System scores (p=0.319 and p=0.650, respectively). CONCLUSION Although we can conclude that the risk of breast malignancy is not increased in patients with polycystic ovary syndrome, the impact of the complex hormonal status of polycystic ovary syndrome on breast cancer remains unclear in the literature.
Collapse
Affiliation(s)
- Ayşe Rabia Şenkaya
- Bakırçay University, Faculty of Medicine, Gynecology and Obstetrics Clinic – İzmir, Turkey
| | - Sabahattin Anıl Arı
- Bakırçay University, Faculty of Medicine, Gynecology and Obstetrics Clinic – İzmir, Turkey
| | - İbrahim Karaca
- Bakırçay University, Faculty of Medicine, Gynecology and Obstetrics Clinic – İzmir, Turkey
| | - Eyüp Kebapçı
- Bakırçay University, Faculty of Medicine, General Surgery Clinic – İzmir, Turkey
| | - Eren İsmailoğlu
- Bakırçay University, Faculty of Medicine, Radiology Clinic – İzmir, Turkey
| | - Deniz Can Öztekin
- Bakırçay University, Faculty of Medicine, Gynecology and Obstetrics Clinic – İzmir, Turkey
| |
Collapse
|
6
|
Allen LA, Shrikrishnapalasuriyar N, Rees DA. Long-term health outcomes in young women with polycystic ovary syndrome: A narrative review. Clin Endocrinol (Oxf) 2022; 97:187-198. [PMID: 34617616 DOI: 10.1111/cen.14609] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 09/22/2021] [Accepted: 10/03/2021] [Indexed: 11/29/2022]
Abstract
Polycystic ovary syndrome (PCOS) has long been recognized as a common disorder in young women leading to reproductive and cutaneous sequelae. However, the associated health risks are now known to extend beyond these familiar manifestations to a range of longer-term comorbidities. Here we review the evidence for an association of PCOS with adverse long-term health outcomes, discussing the pathophysiological mechanisms involved in addition to opportunities for therapeutic intervention. Cross-sectional and longitudinal studies point to an increased risk of type 2 diabetes, hypertension and dyslipidaemia, with recent data confirming that these translate to an increased risk of cardiovascular events independently of obesity. Obstructive sleep apnoea, nonalcoholic fatty liver disease and endometrial cancer are also more prevalent, while mental health disorders, notably anxiety and depression, are common but under-appreciated associations. Uncertainties remain as to whether these risks are apparent in all patients with PCOS or are confined to particular subtypes, whether risks persist post-menopausally and how risk may be affected by ethnicity. Further work is also needed in establishing if systematic screening and targeted intervention can lead to improved outcomes. Until such data are available, clinicians managing women with PCOS should counsel patients on long-term health risks and invest in strategies that limit progression to metabolic and non-metabolic morbidities.
Collapse
Affiliation(s)
- Lowri A Allen
- Diabetes Research Group, School of Medicine, Cardiff University, Cardiff, UK
| | | | - Dafydd Aled Rees
- Neuroscience and Mental Health Research Institute, School of Medicine, Cardiff University, Cardiff, UK
| |
Collapse
|
7
|
Zhu T, Goodarzi MO. Causes and Consequences of Polycystic Ovary Syndrome: Insights From Mendelian Randomization. J Clin Endocrinol Metab 2022; 107:e899-e911. [PMID: 34669940 PMCID: PMC8852214 DOI: 10.1210/clinem/dgab757] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Indexed: 12/19/2022]
Abstract
CONTEXT Although polycystic ovary syndrome (PCOS) is the most common endocrinopathy affecting women of reproductive age, risk factors that may cause the syndrome are poorly understood. Based on epidemiologic studies, PCOS is thought to cause several adverse outcomes such as cardiovascular disease; however, the common presence of comorbidities such as obesity may be responsible for such associations, rather than PCOS in and of itself. To overcome the limitations of observational studies, investigators have employed Mendelian randomization (MR), which uses genetic variants to interrogate causality between exposures and outcomes. EVIDENCE ACQUISITION To clarify causes and consequences of PCOS, this review will describe MR studies involving PCOS, both as an exposure and as an outcome. The literature was searched using the terms "Mendelian randomization," "polycystic ovary syndrome," "polycystic ovarian syndrome," and "PCOS" (to May 2021). EVIDENCE SYNTHESIS MR studies have suggested that obesity, testosterone levels, fasting insulin, serum sex hormone-binding globulin concentrations, menopause timing, male-pattern balding, and depression may play a causal role in PCOS. In turn, PCOS may increase the risk of estrogen receptor-positive breast cancer, decrease the risk of endometrioid ovarian cancer, and have no direct causal effect on type 2 diabetes, coronary heart disease, or stroke. CONCLUSIONS The accumulation of genome-wide association studies in PCOS has enabled multiple MR analyses identifying factors that may cause PCOS or be caused by PCOS. This knowledge will be critical to future development of measures to prevent PCOS in girls at risk as well as prevent complications in those who have PCOS.
Collapse
Affiliation(s)
- Tiantian Zhu
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Mark O Goodarzi
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| |
Collapse
|
8
|
Адамян ЛВ, Андреева ЕН, Абсатарова ЮС, Григорян ОР, Дедов ИИ, Мельниченко ГА, Сутурина ЛВ, Филиппов ОС, Шереметьева ЕВ, Чернуха ГЕ, Ярмолинская МИ. [Clinical guidelines «Polycystic Ovary Syndrome»]. PROBLEMY ENDOKRINOLOGII 2022; 68:112-127. [PMID: 35488762 PMCID: PMC9764272 DOI: 10.14341/probl12874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 02/06/2022] [Indexed: 06/14/2023]
Abstract
Polycystic ovary syndrome (PCOS) is a polygenic endocrine disorder caused by both genetic and epigenetic factors. Depending on the period of a woman's life, the clinical picture, diagnosis, and treatment tactics of the disease are different. PCOS has a complex of reproductive, metabolic and psychological characteristics. The target audience of these clinical recommendations are obstetrician-gynecologists, endocrinologists, general practitioners, general practitioners. In these clinical guidelines, all information is ranked according to the level of persuasiveness of recommendations and the reliability of evidence, depending on the number and quality of studies on this issue.
Collapse
Affiliation(s)
- Л. В. Адамян
- Национальный исследовательский центр акушерства, гинекологии и перинатологии им. В.И. Кулакова;
Московский государственный медико-стоматологический университет им. А.И. Евдокимова
| | - Е. Н. Андреева
- Национальный медицинский исследовательский центр эндокринологии;
Московский государственный медико-стоматологический университет им. А.И. Евдокимова
| | | | - О. Р. Григорян
- Национальный медицинский исследовательский центр эндокринологии
| | - И. И. Дедов
- Национальный медицинский исследовательский центр эндокринологии
| | | | - Л. В. Сутурина
- Научный центр проблем здоровья семьи и репродукции человека
| | - О. С. Филиппов
- Первый Московский государственный медицинский университет им. И.М. Сеченова (Сеченовский Университет);
Министерство здравоохранения Российской Федерации
| | | | - Г. Е. Чернуха
- Национальный исследовательский центр акушерства, гинекологии и перинатологии им. В.И. Кулакова
| | - М. И. Ярмолинская
- Научно-исследовательский институт акушерства, гинекологии и репродукции им. Д.О. Отта;
Северо-Западный государственный медицинский университет им. И.И. Мечникова
| |
Collapse
|
9
|
Tyrmi JS, Arffman RK, Pujol-Gualdo N, Kurra V, Morin-Papunen L, Sliz E, Piltonen TT, Laisk T, Kettunen J, Laivuori H. Leveraging Northern European population history: novel low-frequency variants for polycystic ovary syndrome. Hum Reprod 2022; 37:352-365. [PMID: 34791234 PMCID: PMC8804330 DOI: 10.1093/humrep/deab250] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 10/07/2021] [Indexed: 12/21/2022] Open
Abstract
STUDY QUESTION Can we identify novel variants associated with polycystic ovary syndrome (PCOS) by leveraging the unique population history of Northern Europe? SUMMARY ANSWER We identified three novel genome-wide significant associations with PCOS, with two putative independent causal variants in the checkpoint kinase 2 (CHEK2) gene and a third in myosin X (MYO10). WHAT IS KNOWN ALREADY PCOS is a common, complex disorder with unknown aetiology. While previous genome-wide association studies (GWAS) have mapped several loci associated with PCOS, the analysis of populations with unique population history and genetic makeup has the potential to uncover new low-frequency variants with larger effects. STUDY DESIGN, SIZE, DURATION A population-based case-control GWAS was carried out. PARTICIPANTS/MATERIALS, SETTING, METHODS We identified PCOS cases from national registers by ICD codes (ICD-10 E28.2, ICD-9 256.4, or ICD-8 256.90), and all remaining women were considered controls. We then conducted a three-stage case-control GWAS: in the discovery phase, we had a total of 797 cases and 140 558 controls from the FinnGen study. For validation, we used an independent dataset from the Estonian Biobank, including 2812 cases and 89 230 controls. Finally, we performed a joint meta-analysis of 3609 cases and 229 788 controls from both cohorts. Additionally, we reran the association analyses including BMI as a covariate, with 2169 cases and 160 321 controls from both cohorts. MAIN RESULTS AND THE ROLE OF CHANCE Two out of the three novel genome-wide significant variants associating with PCOS, rs145598156 (P = 3.6×10-8, odds ratio (OR) = 3.01 [2.02-4.50] minor allele frequency (MAF) = 0.005) and rs182075939 (P = 1.9×10-16, OR = 1.69 [1.49-1.91], MAF = 0.04), were found to be enriched in the Finnish and Estonian populations and are tightly linked to a deletion c.1100delC (r2 = 0.95) and a missense I157T (r2 = 0.83) in CHEK2. The third novel association is a common variant near MYO10 (rs9312937, P = 1.7 × 10-8, OR = 1.16 [1.10-1.23], MAF = 0.44). We also replicated four previous reported associations near the genes Erb-B2 Receptor Tyrosine Kinase 4 (ERBB4), DENN Domain Containing 1A (DENND1A), FSH Subunit Beta (FSHB) and Zinc Finger And BTB Domain Containing 16 (ZBTB16). When adding BMI as a covariate only one of the novel variants remained genome-wide significant in the meta-analysis (the EstBB lead signal in CHEK2 rs182075939, P = 1.9×10-16, OR = 1.74 [1.5-2.01]) possibly owing to reduced sample size. LARGE SCALE DATA The age- and BMI-adjusted GWAS meta-analysis summary statistics are available for download from the GWAS Catalog with accession numbers GCST90044902 and GCST90044903. LIMITATIONS, REASONS FOR CAUTION The main limitation was the low prevalence of PCOS in registers; however, the ones with the diagnosis most likely represent the most severe cases. Also, BMI data were not available for all (63% for FinnGen, 76% for EstBB), and the biobank setting limited the accessibility of PCOS phenotypes and laboratory values. WIDER IMPLICATIONS OF THE FINDINGS This study encourages the use of isolated populations to perform genetic association studies for the identification of rare variants contributing to the genetic landscape of complex diseases such as PCOS. STUDY FUNDING/COMPETING INTEREST(S) This work has received funding from the European Union's Horizon 2020 research and innovation programme under the MATER Marie Skłodowska-Curie grant agreement No. 813707 (N.P.-G., T.L., T.P.), the Estonian Research Council grant (PRG687, T.L.), the Academy of Finland grants 315921 (T.P.), 321763 (T.P.), 297338 (J.K.), 307247 (J.K.), 344695 (H.L.), Novo Nordisk Foundation grant NNF17OC0026062 (J.K.), the Sigrid Juselius Foundation project grants (T.L., J.K., T.P.), Finska Läkaresällskapet (H.L.) and Jane and Aatos Erkko Foundation (H.L.). The funders had no role in study design, data collection and analysis, publishing or preparation of the manuscript. The authors declare no conflicts of interest.
Collapse
Affiliation(s)
- Jaakko S Tyrmi
- Computational Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Riikka K Arffman
- Department of Obstetrics and Gynecology, PEDEGO Research Unit, Medical Research Centre, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Natàlia Pujol-Gualdo
- Department of Obstetrics and Gynecology, PEDEGO Research Unit, Medical Research Centre, Oulu University Hospital, University of Oulu, Oulu, Finland
- Estonian Genome Centre, Institute of Genomics, University of Tartu, Tartu, Estonia
| | - Venla Kurra
- Department of Clinical Genetics, Faculty of Medicine and Health Technology, Tampere University Hospital and Tampere University, Tampere, Finland
| | - Laure Morin-Papunen
- Department of Obstetrics and Gynecology, PEDEGO Research Unit, Medical Research Centre, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Eeva Sliz
- Computational Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | | | - Terhi T Piltonen
- Department of Obstetrics and Gynecology, PEDEGO Research Unit, Medical Research Centre, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Triin Laisk
- Estonian Genome Centre, Institute of Genomics, University of Tartu, Tartu, Estonia
| | - Johannes Kettunen
- Computational Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
- Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Hannele Laivuori
- Department of Obstetrics and Gynecology, Faculty of Medicine and Health Technology, Tampere University Hospital and Tampere University, Tampere, Finland
- Medical and Clinical Genetics, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Institute for Molecular Medicine Finland, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| |
Collapse
|
10
|
Mendelian randomization analyses for PCOS: evidence, opportunities, and challenges. Trends Genet 2022; 38:468-482. [DOI: 10.1016/j.tig.2022.01.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/05/2022] [Accepted: 01/07/2022] [Indexed: 12/21/2022]
|
11
|
Jin L, Yu J, Chen Y, Pang H, Sheng J, Huang H. Polycystic Ovary Syndrome and Risk of Five Common Psychiatric Disorders Among European Women: A Two-Sample Mendelian Randomization Study. Front Genet 2021; 12:689897. [PMID: 34211505 PMCID: PMC8239353 DOI: 10.3389/fgene.2021.689897] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 05/25/2021] [Indexed: 12/18/2022] Open
Abstract
Background: Observational studies have implied an association between polycystic ovary syndrome (PCOS) and psychiatric disorders. Here we examined whether PCOS might contribute causally to such disorders, focusing on anxiety disorder (AD), bipolar disorder (BIP), major depression disorder (MDD), obsessive compulsive disorder (OCD), and schizophrenia (SCZ). Methods: Causality was explored using two-sample Mendelian randomization (MR) with genetic variants as instrumental variables. The genetic variants were from summary data of genome-wide association studies in European populations. First, potential causal effects of PCOS on each psychiatric disorder were evaluated, and then potential reverse causality was also assessed once PCOS was found to be causally associated with any psychiatric disorder. Causal effects were explored using inverse variance weighting, MR-Egger analysis, simulation extrapolation, and weighted median analysis. Results: Genetically predicted PCOS was positively associated with OCD based on inverse variance weighting (OR 1.339, 95% CI 1.083–1.657, p = 0.007), simulation extrapolation (OR 1.382, 95% CI 1.149–1.662, p = 0.009) and weighted median analysis (OR 1.493, 95% CI 1.145–1.946, p = 0.003). However, genetically predicted OCD was not associated with PCOS. Genetically predicted PCOS did not exert causal effects on AD, BIP, MDD, or SCZ. Conclusions: In European populations, PCOS may be a causal factor in OCD, but not AD, BIP, MDD, or SCZ.
Collapse
Affiliation(s)
- Luyang Jin
- Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jia'en Yu
- Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yuxiao Chen
- The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Haiyan Pang
- Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jianzhong Sheng
- Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, China.,Department of Pathology and Pathophysiology, School of Basic Medical Sciences, Zhejiang University, Hangzhou, China
| | - Hefeng Huang
- Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Genetics, Ministry of Education, School of Medicine, Zhejiang University, Hangzhou, China
| |
Collapse
|
12
|
Chen H, Zhang Y, Li S, Tao Y, Gao R, Xu W, Yang Y, Cheng K, Wang Y, Qin L. The Genetic Association of Polycystic Ovary Syndrome and the Risk of Endometrial Cancer: A Mendelian Randomization Study. Front Endocrinol (Lausanne) 2021; 12:756137. [PMID: 34803918 PMCID: PMC8602912 DOI: 10.3389/fendo.2021.756137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 10/22/2021] [Indexed: 12/28/2022] Open
Abstract
The association between polycystic ovary syndrome (PCOS) and endometrial cancer remains unclear. We aimed to investigate the causal association between genetically predicted PCOS and endometrial cancer risk in two ethnic groups through a two-sample Mendelian randomization (MR) approach. Our study includes 13 single nucleotide polymorphisms (SNPs) as instrumental variables (IVs) for PCOS in Europeans, and another 13 SNPs are used as IVs for PCOS in Asians. Outcome data were obtained from the largest published meta-GWAS of European ancestry to date, as well as from the BioBank Japan Project of Asian ancestry. Our study demonstrates that genetically predicted PCOS is not causally associated with the risk of overall endometrial cancer in either Europeans or Asians (odds ratio (OR) = 0.93, 95% confidence interval (CI) = 0.85-1.01, p = 0.09 and OR = 0.98, 95% CI 0.84-1.13, p = 0.75, respectively). Subgroup analyses according to histotype further illustrate that PCOS might not be associated with the risk of either endometrioid endometrial cancer or non-endometrioid endometrial cancer in European ancestry. No pleiotropy is found in our study, and a sensitivity analysis shows similar results. Our results indicate that genetically predicted PCOS might not be associated with the risk of endometrial cancer.
Collapse
Affiliation(s)
- Hanxiao Chen
- Reproductive Centre, Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
- West China School of Medicine, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of the Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yaoyao Zhang
- Reproductive Centre, Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of the Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Shangwei Li
- Reproductive Centre, Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of the Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yuanzhi Tao
- Reproductive Centre, Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of the Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Rui Gao
- Reproductive Centre, Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
- West China School of Medicine, Sichuan University, Chengdu, China
| | - Wenming Xu
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of the Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
- Sichuan University-The Chinese University of Hong Kong (SCU–CUHK) Joint Laboratory for Reproductive Medicine, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yihong Yang
- Reproductive Centre, Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of the Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Kemin Cheng
- Outpatient Department, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yan Wang
- Department of Obstetrics and Gynaecology, Sichuan Academy of Medical Sciences & Sichuan Provincial People’s Hospital, Chengdu, China
- *Correspondence: Lang Qin, ; Yan Wang,
| | - Lang Qin
- Reproductive Centre, Department of Obstetrics and Gynaecology, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of the Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
- *Correspondence: Lang Qin, ; Yan Wang,
| |
Collapse
|