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Rachel Forfar Centre for Therapeutics Discovery, LifeArc, Accelerator Building, Open Innovation Campus, Stevenage, UK

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Mashal Hussain Centre for Endocrinology, William Harvey Research Institute, Queen Mary University of London, London, UK

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Puneet Khurana Centre for Therapeutics Discovery, LifeArc, Accelerator Building, Open Innovation Campus, Stevenage, UK

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Jennifer Cook Centre for Therapeutics Discovery, LifeArc, Accelerator Building, Open Innovation Campus, Stevenage, UK

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Steve Lewis Centre for Therapeutics Discovery, LifeArc, Accelerator Building, Open Innovation Campus, Stevenage, UK

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Dillon Popat Centre for Endocrinology, William Harvey Research Institute, Queen Mary University of London, London, UK

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David Jackson Centre for Endocrinology, William Harvey Research Institute, Queen Mary University of London, London, UK

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Ed McIver Centre for Therapeutics Discovery, LifeArc, Accelerator Building, Open Innovation Campus, Stevenage, UK

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Jeff Jerman Centre for Therapeutics Discovery, LifeArc, Accelerator Building, Open Innovation Campus, Stevenage, UK

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Debra Taylor Centre for Therapeutics Discovery, LifeArc, Accelerator Building, Open Innovation Campus, Stevenage, UK

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Adrian JL Clark Centre for Endocrinology, William Harvey Research Institute, Queen Mary University of London, London, UK

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Li F Chan Centre for Endocrinology, William Harvey Research Institute, Queen Mary University of London, London, UK

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The overproduction of adrenocorticotropic hormone (ACTH), in conditions such as Cushing’s disease and congenital adrenal hyperplasia (CAH), leads to significant morbidity. Current treatment with glucocorticoids does not adequately suppress plasma ACTH, resulting in excess adrenal androgen production. At present, there is no effective medical treatment in clinical use that would directly block the action of ACTH. Such a therapy would be of great clinical value. ACTH acts via a highly selective receptor, the melanocortin-2 receptor (MC2R) associated with its accessory protein MRAP. ACTH is the only known naturally occurring agonist for this receptor. This lack of redundancy and the high degree of ligand specificity suggest that antagonism of this receptor could provide a useful therapeutic strategy in the treatment of conditions of ACTH excess. To this end, we screened an extensive library of low-molecular-weight drug-like compounds for MC2R antagonist activity using a high-throughput homogeneous time-resolved fluorescence cAMP assay in Chinese hamster ovary cells stably co-expressing human MC2R and MRAP. Hits that demonstrated MC2R antagonist properties were counter-screened against the β2 adrenergic receptor and dose–response analysis undertaken. This led to the identification of a highly specific MC2R antagonist capable of antagonising ACTH-induced progesterone release in murine Y-1 adrenal cells and having selectivity for MC2R amongst the human melanocortin receptors. This work provides a foundation for the clinical investigation of small-molecule ACTH antagonists as therapeutic agents and proof of concept for the screening and discovery of such compounds.

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Meghnaa Hebbar College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom

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Halimah Khalil College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom

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Nawal Zia College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom

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Jameela Sheikh College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom

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Eka Melson University of Leicester, Leicester, United Kingdom

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Meri Davitadze Clinic NeoLab, Tbilisi, Georgia

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Helena Gleeson Department of Endocrinology, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom

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Tejal Lathia Apollo Hospitals, Mumbai, India

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Chitra Selvan Department of Endocrinology, M S Ramaiah Medical College, Bengaluru, India

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Punith Kempegowda Clinic NeoLab, Tbilisi, Georgia
Department of Endocrinology, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom

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PCOS SEva Working Group
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PCOS SEva Working Group

With increasing evidence of emotional well-being disorders associated with polycystic ovary syndrome (PCOS), effective screening processes are of utmost importance. We studied the impact of using questionnaires to screen for emotional and psychosexual well-being across different models of care for PCOS. We analysed the data from the surveys to assess the difference in the prevalence of emotional and psychosexual ill-being across ethnicity and region. In this prospective cohort study, we invited all women attending consultations for PCOS in Birmingham, UK, and Bengaluru and Navi Mumbai, India. Those who consented to participate in the study were invited to complete a pre-clinic survey about socio-demographic data, Hospital Anxiety and Depression Scale (HADS), Body Image Concern Inventory (BICI), Beliefs about Obese Person scale (BAOP), and Female Sexual Function Index score (FSFI) and a post-clinic survey on clinic experience, lifestyle advice, and specialist referral. A total of 115 women were included in this study. The rate of questionnaire completion was 98.3% (113/115), 97.4% (112/115), 93.04% (107/115), and 84.3% (97/115) for HADS, BICI, BAOP, and FSFI, respectively. In the post-clinic survey, 28.8% reported they were screened for anxiety, 27.1% for depression, and 45.8% for body image concerns. The prevalence of anxiety, depression, and body dysmorphic disorder through pre-clinic survey was 56.5% (50.0% UK vs 59.5% India, P = 0.483), 16.5% (13.9% UK vs 17.7% India, P = 0.529), and 29.6% (36.1% UK vs 26.6% India, P = 0.208), respectively. Surveys with validated questionnaires can improve screening for emotional and psychosexual well-being associated with PCOS which may be missed by ad hoc screening during consultations.

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Xiying Zeng The Third Clinical Medical College, Fujian Medical University, Fuzhou, China

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Yinxiang Huang Department of Endocrinology and Diabetes, The First Affiliated Hospital, Xiamen University, Xiamen, China

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Mulin Zhang Department of Endocrinology and Diabetes, The First Affiliated Hospital, Xiamen University, Xiamen, China

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Yun Chen The Third Clinical Medical College, Fujian Medical University, Fuzhou, China

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Jiawen Ye The Third Clinical Medical College, Fujian Medical University, Fuzhou, China

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Yan Han School of Medicine, Xiamen University, Xiamen, China

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Danyan Ma School of Medicine, Xiamen University, Xiamen, China

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Xin Zheng Department of Endocrinology and Diabetes, The First Affiliated Hospital, Xiamen University, Xiamen, China

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Xiaohong Yan Reproductive Medicine Center, The First Affiliated Hospital of Xiamen University, Xiamen, China

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Changqin Liu The Third Clinical Medical College, Fujian Medical University, Fuzhou, China
Department of Endocrinology and Diabetes, The First Affiliated Hospital, Xiamen University, Xiamen, China
Fujian Province Key Laboratory of Diabetes Translational Medicine, Xiamen, China

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Objective

Anti-Müllerian hormone (AMH) is recognized as the most important biomarker for ovarian reserve. In this cross-sectional study, we aimed to explore the potential association of AMH with central obesity or general obesity in women with polycystic ovary syndrome (PCOS).

Methods

In this cross-sectional study, 179 patients with PCOS were enrolled and underwent anthropometric measurements (BMI and waist circumference (WC)) and serum AMH level detection. Pearson’s correlation and multivariable logistic regression analyses were performed to determine the associations of AMH with central obesity and general obesity.

Results

Subjects with increasing BMI showed significantly lower values of AMH (median (interquartile range (IQR)) 8.95 (6.03–13.60) ng/mL in normal weight group, 6.57 (4.18–8.77) ng/mL in overweight group, and 6.03 (4.34–9.44) ng/mL in obesity group, P = 0.001), but higher levels of systolic blood pressure, fasting insulin, total cholesterol, triglycerides, LDL-c, obesity indices (WC, hip circumferences, waist-to-hip ratio, waist-to-height ratio (WHtR), and Chinese visceral adiposity index (CVAI)). Compared with the group of PCOS women without central obesity, the group with central obesity had significantly lower value of AMH (median (IQR) 8.56 (5.29–12.96) ng/mL vs 6.22 (4.33–8.82) ng/mL; P = 0.003). Pearson’s correlation analysis showed that AMH was significantly and negatively correlated with BMI (r = −0.280; P < 0.001), WC (r = −0.263; P < 0.001), WHtR (r = −0.273; P < 0.001), and CVAI (r = −0.211; P = 0.006). Multivariate logistic regression analysis with adjustment for potential confounding factors showed that AMH was independently and negatively associated with central obesity but was not significantly associated with general obesity.

Conclusions

AMH was independently and negatively associated with central obesity. Closely monitoring the WC and AMH should be addressed in terms of assessing ovarian reserve in women with PCOS.

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Jie Yang J Yang, Reproductive Medicine Center, Shunde Hospital of Southern Medical University, Foshan, China

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Min Lin M Lin, Reproductive Medicine Center, The First People's Hospital of Yulin, Yulin, China

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Xiaoyan Tian X Tian, Reproductive Medicine Center, Shunde Hospital of Southern Medical University, Foshan, China

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Chujun Li C Li, Reproductive Medicine Center, Shunde Hospital of Southern Medical University, Foshan, China

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Haocun Wu H Wu, Department of Clinical Laboratory, Shunde Hospital of Southern Medical University, Foshan, China

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Ling Deng L Deng, Reproductive Medicine Center, Shunde Hospital of Southern Medical University, Foshan, China

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Xuelan Li X Li, Reproductive Medicine Center, Shunde Hospital of Southern Medical University, Foshan, China

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Xin Chen X Chen, Reproductive Medicine Center, Shunde Hospital of Southern Medical University, Foshan, China

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Purpose: Our study aimed to assess the relationship between serum adipokines and insulin resistance (IR) in women with polycystic ovary syndrome (PCOS), as well as explore the predictive value of adipokines on IR in PCOS.

Methods: This was a prospective cross-sectional study. 154 women with PCOS were included from July 2021 to September 2022 who underwent gonadal steroid hormone measurement, lipid profile, oral glucose tolerance test and homeostasis model assessment (HOMA)-IR. Adiponectin (APN), leptin and secreted frizzled-related protein (Sfrp5) were measured by immunoturbidimetry and enzyme-linked immunosorbent assay. Women with PCOS were categorised based on the presence of IR.

Results: Women with PCOS with IR (n=99) had significantly lower APN level and APN to leptin ratio (A/L ratio) than those without IR (n=55), whereas serum levels of leptin and Sfrp5 were similar between the two groups. In multivariable linear regression analysis, serum log (APN) and log (A/L ratio) were associated with log(HOMA-IR), the association was statistically significant after adjusting for body mass index (BMI) and free androgen index. The area under the ROC curve (95% CI) for APN and A/L ratio were 0.726 (0.644–0.807; P<0.001) and 0.660(0.569–0.751; P<0.01), with cutoff values of 5.225 mg/L (Youden index ¼ 0.364) and 1.438 (Youden index ¼ 0.265) respectively.

Conclusion: Our study demonstrated that serum APN was negatively related to IR. Serum APN may be useful as a clinical marker for IR in women with PCOS. Our findings warrant further investigations into the function of APN in the pathogenesis of IR in women with PCOS.

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Srdjan Pandurevic Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy

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Ilaria Mancini Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy
Unit of Gynecology and Obstetrics, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Italy

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Dimitri Mitselman Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy

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Matteo Magagnoli Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy

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Rita Teglia Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy

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Roberta Fazzeri Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy

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Paola Dionese Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy

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Carolina Cecchetti Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy

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Massimiliamo Caprio Department of Human Sciences and Quality of Life Promotion, San Raffaele Roma Open University, Rome, Italy
Laboratory of Cardiovascular Endocrinology, IRCCS San Raffaele, Rome, Italy

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Costanzo Moretti Department of Systems Medicine, Unit of Endocrinology, University of Rome Tor Vergata, Rome, Italy

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Justyna Sicinska Dermatology Clinic of CSK MSWiA Hospital, Warsaw, Poland

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Alessandro Agostini Department of Experimental, Diagnostic, and Specialty Medicine, University of Bologna, Bologna, Italy

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Domenica Gazineo Teaching Hospital, S. Orsola Hospital, Bologna, Italy

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Lea Godino Teaching Hospital, S. Orsola Hospital, Bologna, Italy

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Ignacio Sajoux Epigenomics in Endocrinology and Nutrition Group, Instituto de Investigacion Sanitaria (IDIS), Complejo Hospitalario Universitario de Santiago (CHUS/SERGAS), Spain
Medical Department Pronokal Group, Barcelona, Spain

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Flaminia Fanelli Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy

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Cristina M Meriggiola Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy
Unit of Gynecology and Obstetrics, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Italy

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Uberto Pagotto Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy

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Alessandra Gambineri Division of Endocrinology and Diabetes Prevention and Care, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum University of Bologna, Bologna, Italy

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Objective

The aim of this study isto assess the efficacy of a very low-calorie ketogenic diet (VLCKD) method vs a Mediterranean low-calorie diet (LCD) in obese polycystic ovary syndrome (PCOS) women of a reproductive age.

Design

Randomized controlled open-label trial was performed in this study. The treatment period was 16 weeks; VLCKD for 8 weeks then LCD for 8 weeks, according to the Pronokal® method (experimental group; n = 15) vs Mediterranean LCD for 16 weeks (control group; n = 15). Ovulation monitoring was carried out at baseline and after 16 weeks, while a clinical exam, bioelectrical impedance analysis (BIA), anthropometry, and biochemical analyses were performed at baseline, at week 8, and at week 16.

Results

BMI decreased significantly in both groups and to a major extent in the experimental group (−13.7% vs −5.1%, P = 0.0003). Significant differences between the experimental and the control groups were also observed in the reduction of waist circumference (−11.4% vs −2.9%), BIA-measured body fat (−24.0% vs −8.1%), and free testosterone (−30.4% vs −12.6%) after 16 weeks (P = 0.0008, P = 0.0176, and P = 0.0009, respectively). Homeostatic model assessment for insulin resistance significantly decreased only in the experimental group (P = 0.0238) but without significant differences with respect to the control group (−23% vs −13.2%, P > 0.05). At baseline, 38.5% of participants in the experimental group and 14.3% of participants in the control group had ovulation, which increased to 84.6% (P = 0.031) and 35.7% (P > 0.05) at the end of the study, respectively.

Conclusion

In obese PCOS patients, 16 weeks of VLCKD protocol with the Pronokal® method was more effective than Mediterranean LCD in reducing total and visceral fat, and in ameliorating hyperandrogenism and ovulatory dysfunction.

Significance statements

To the best of our knowledge, this is the first randomized controlled trial on the use of the VLCKD method in obese PCOS. It demonstrates the superiority of VLCKD with respect to Mediterranean LCD in reducing BMI with an almost selective reduction of fat mass and a unique effect of VLCKD in reducing visceral adiposity, insulin resistance, and in increasing SHBG with a consequent reduction of free testosterone. Interestingly, this study also demonstrates the superiority of the VLCKD protocol in improving ovulation, whose occurrence increased by 46.1% in the group treated by the VLCKD method against a rise of 21.4% in the group treated by Mediterranean LCD. This study extends the therapeutic approach possibilities in obese PCOS women.

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Claus H Gravholt Department of Endocrinology, Aarhus University Hospital, Aarhus, Denmark
Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
Department of Clinical Medicine, Aarhus University, Aarhus, Denmark

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Alberto Ferlin Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Padova, Italy

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Joerg Gromoll Centre of Reproductive Medicine and Andrology, Münster, Germany

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Anders Juul Department of Growth and Reproduction Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Department of Clinical Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark

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Armin Raznahan Section on Developmental Neurogenomics, National Institute of Mental Health Intramural Research Program, National Institutes of Health, Bethesda, Maryland, USA

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Sophie van Rijn Clinical Neurodevelopmental Sciences, Leiden University, Leiden, The Netherlands and TRIXY Center of Expertise, Leiden University Treatment and Expertise Centre (LUBEC), Leiden, The Netherlands

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Alan D Rogol Department of Pediatrics, University of Virginia, Charlottesville, Virginia, USA

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Anne Skakkebæk Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark

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Nicole Tartaglia Department of Pediatrics, Developmental Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA

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Hanna Swaab Clinical Neurodevelopmental Sciences, Leiden University, Leiden, The Netherlands and TRIXY Center of Expertise, Leiden University Treatment and Expertise Centre (LUBEC), Leiden, The Netherlands

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The 3rd International Workshop on Klinefelter Syndrome, Trisomy X, and 47,XYY syndrome was held in Leiden, the Netherlands, on September 12–14, 2022.

Here, we review new data presented at the workshop and discuss scientific and clinical trajectories. We focus on shortcomings in knowledge and therefore point out future areas for research.

We focus on the genetics and genomics of supernumerary sex chromosome syndromes with new data being presented. Most knowledge centre specifically on Klinefelter syndrome, where aspects on testosterone deficiency and the relation to bone, muscle and fat were discussed, as was infertility and the treatment thereof. Both trisomy X and 47,XYY syndrome are frequently affected by infertility.

Transitioning of males with Klinefelter syndrome was addressed, as this seemingly simple process in practise is often difficult.

It is now realized that neurocognitive changes are pervasive in all supernumerary sex chromosome syndromes, which were extensively discussed. New intervention projects were also described, and exciting new data concerning these were presented.

Advocacy organizations were present, describing the enormous burden carried by parents when having to explain their child’s specific syndrome to most professionals whenever in contact with health care and education systems. It was also pointed out that most countries do not have health care systems that diagnose patients with supernumerary sex chromosome syndromes, thus pinpointing a clear deficiency in the current genetic testing and care models.

At the end of the workshop, a roadmap towards the development of new international clinical care guidelines for Klinefelter syndrome was decided.

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Lukas Ochsner Ridder Department of Endocrinology and Internal Medicine and Medical Research Laboratories, Aarhus University Hospital, Aarhus, Denmark
Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark

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Agnethe Berglund Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
Department of Clinical Genetics and Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark

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Kirstine Stochholm Department of Endocrinology and Internal Medicine and Medical Research Laboratories, Aarhus University Hospital, Aarhus, Denmark

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Simon Chang Department of Endocrinology and Internal Medicine and Medical Research Laboratories, Aarhus University Hospital, Aarhus, Denmark
Unit for Thrombosis Research, Hospital of South West Jutland and University of Southern Denmark, Esbjerg, Denmark

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Claus H Gravholt Department of Endocrinology and Internal Medicine and Medical Research Laboratories, Aarhus University Hospital, Aarhus, Denmark
Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
Unit for Thrombosis Research, Hospital of South West Jutland and University of Southern Denmark, Esbjerg, Denmark

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Context

Klinefelter syndrome (KS, 47,XXY) and 47,XYY syndrome are genetic conditions characterized by a supernumerary sex chromosome. The conditions share many traits, but considerable phenotypic differences are seen between the two. Focusing on morbidity, mortality, and socioeconomics, this review highlights similarities and differences.

Methods

Relevant literature was identified through PubMed with the following search terms; 'Klinefelter', '47,XXY', '47,XYY', and 'Jacobs syndrome'. Included journal articles were chosen at the authors’ discretion.

Results

KS and 47,XYY are the most common sex chromosome disorders in males, with an expected prevalence of 152 and 98 per 100,000 newborn males, respectively. Non-diagnosis is extensive, as only about 38% of KS and 18% of 47,XYY are diagnosed. Both conditions are associated with an increased mortality risk and increased risk of a variety of diseases and other health-related problems affecting virtually every organ system. Early diagnosis seems to predict a lesser comorbidity burden. Neurocognitive deficits as well as social and behavioral problems are commonly described. Both syndromes are associated with poor socioeconomicfor example, lower income and educational level and higher rates of crime. Infertility is a hallmark of KS, but fertility seems also reduced in 47,XYY.

Conclusion

Being born as a boy with an extra X or Y chromosome is associated with increased mortality and excess morbidity, partially expressed in a sex chromosome-specific pattern.Both syndromes continue to be greatly underdiagnosed, even thoughearly intervention may improve the overall outcome. Earlier diagnosis to initiate timely counseling and treatment should be emphasized.

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Panagiotis Anagnostis Unit of Reproductive Endocrinology, 1st Department of Obstetrics and Gynecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece

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Irene Lambrinoudaki 2nd Department of Obstetrics and Gynecology, National and Kapodistrian University of Athens, Medical School, Athens, Greece

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John C Stevenson National Heart and Lung Institute, Imperial College London, Royal Brompton and Harefield Hospitals, Guy’s and St Thomas’ NHS Foundation Trust, London, UK

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Dimitrios G Goulis Unit of Reproductive Endocrinology, 1st Department of Obstetrics and Gynecology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece

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Cardiovascular disease (CVD) is of major concern in women entering menopause. The changing hormonal milieu predisposes them to increased CVD risk, due to a constellation of risk factors, such as visceral obesity, atherogenic dyslipidemia, dysregulation in glucose homeostasis, non-alcoholic fatty liver disease and arterial hypertension. However, an independent association of menopause per se with increased risk of CVD events has only been proven for early menopause (<45 years). Menopausal hormone therapy (MHT) ameliorates most of the CVD risk factors mentioned above. Transdermal estrogens are the preferable regimen, since they do not increase triglyceride concentrations and they are not associated with increased risk of venous thromboembolic events (VTE). Although administration of MHT should be considered on an individual basis, MHT may reduce CVD morbidity and mortality, if commenced during the early postmenopausal period (<60 years or within ten years since the last menstrual period). In women with premature ovarian insufficiency (POI), MHT should be administered at least until the average age of menopause (50–52 years). MHT is contraindicated in women with a history of VTE and is not currently recommended for the sole purpose of CVD prevention. The risk of breast cancer associated with MHT is generally low and is mainly conferred by the progestogen. Micronized progesterone and dydrogesterone are associated with lower risk compared to other progestogens.

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Alan D Rogol Department of Pediatrics, University of Virginia, Charlottesville, Virginia, USA

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The overall incidence of sex chromosome aneuploidies is approximately 1 per 500 live-born infants, but far more common at conception. I shall review the fertility aspects of the sex chromosome trisomies, XXY, XYY, and XXX, with special reference to the karyotype 45,X/47,XXX. Each has a ‘specific’ (but variable) phenotype but may be modified by mosaicism. Although the alterations in the hypothalamic–pituitary–gonadal axis are important (and discussed), the emphasis here is on potential fertility and if one might predict that at various epochs within an individual’s life span: fetal, ‘mini’-puberty, childhood, puberty, and adulthood. The reproductive axis is often affected in females with the 47,XXX karyotype with diminished ovarian reserve and accelerated loss of ovarian function. Fewer than 5% of females with Turner syndrome have the 45,X/47,XXX karyotype. They have taller stature and less severe fertility issues compared to females with the 45,X or other forms of Turner syndrome mosaicism. For the 47,XXY karyotype, non-obstructive azoospermia is almost universal with sperm retrieval by micro-testicular sperm extraction possible in slightly fewer than half of the men. Men with the 47,XYY karyotype have normal to large testes and much less testicular dysfunction than those with the 47,XXY karyotype. They do have a slight increase in infertility compared to the reference population but not nearly as severe as those with the 47,XXY karyotype. Assisted reproductive technology, especially micro-testicular sperm extraction, has an important role, especially for those with 47,XXY; however, more recent data show promising techniques for the in vitro maturation of spermatogonial stem cells and 3D organoids in culture. Assisted reproductive technology is more complex for the female, but vitrification of oocytes has shown promising advances.

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Simon Chang Unit for Thrombosis Research, Institute of Regional Health Research, University of Southern Denmark and Department of Clinical Biochemistry, Hospital of South West Denmark, Esbjerg, Denmark
Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus N, Denmark

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Christian Fynbo Christiansen Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus N, Denmark

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Anders Bojesen Department of Clinical Genetics, Aarhus University Hospital, Aarhus N, Denmark

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Svend Juul Department of Public Health, Aarhus University, Aarhus C, Denmark

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Anna-Marie B Münster Unit for Thrombosis Research, Institute of Regional Health Research, University of Southern Denmark and Department of Clinical Biochemistry, Hospital of South West Denmark, Esbjerg, Denmark

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Claus H Gravholt Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus N, Denmark
Department of Molecular Medicine, Aarhus University Hospital, Aarhus N, Denmark

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Objectives

Klinefelter syndrome (KS), 47,XXY, can be viewed as a disease model for investigating the risk of thrombosis in male hypogonadism and the subsequent risk related to testosterone treatment. We describe rates of thrombotic risk factors, thrombosis and thrombosis mortality in KS and the association with testosterone treatment.

Methods

National registry-based matched cohort study with follow-up from 1995 to 2016 set in Denmark. For the study, 1155 men with KS were each matched by year and month of birth to 100 men from the background population. First thrombotic events and thrombosis mortality was evaluated by event rates and hazard ratios (HRs) and by applying testosterone treatment as a time-dependent covariate.

Results

The KS cohort had higher incidence of venous thromboembolism relative to the comparison cohort (HR, 3.95; 95% CI, 2.83–5.52). Total thrombotic deaths were increased in KS (HR, 1.76; 95% CI, 1.18–2.62), and all-cause mortality was increased in KS following arterial thrombosis (HR 1.73; 95% CI 1.22–2.47). Only 48.7% of men with KS redeemed prescriptions for testosterone. Untreated men with KS were on average born 12 years before those treated, and the majority of untreated men with KS with available biochemistry were hypogonadal. Testosterone treatment in KS was associated with a non-significant decrease in venous thromboembolism and thrombotic deaths.

Conclusion

Thrombosis and thrombotic deaths are increased in KS. Only half of the men with KS ever received testosterone treatment, despite overt hypogonadism in the non-treated. Testosterone treatment in Klinefelter syndrome was insignificantly associated with lower incidence rates of venous thrombosis and thrombotic deaths.

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