RT Book, Section A1 Ketefian, Aline A1 Goodarzi, Mark A2 Murray, Michael F. A2 Babyatsky, Mark W. A2 Giovanni, Monica A. A2 Alkuraya, Fowzan S. A2 Stewart, Douglas R. SR Print(0) ID 1102703908 T1 Polycystic Ovary Syndrome T2 Clinical Genomics: Practical Applications in Adult Patient Care YR 2014 FD 2014 PB McGraw-Hill Education PP New York, NY SN 9780071622448 LK accessmedicine.mhmedical.com/content.aspx?aid=1102703908 RD 2024/04/18 AB Disease summary:Polycystic ovary syndrome (PCOS) is a highly prevalent and complex genetic disorder affecting reproductive aged women. Its characteristics include clinical and/or biochemical androgen excess, ovulatory dysfunction, and polycystic ovaries (PCOs). Women with PCOS are at increased risk for infertility, obesity, insulin resistance, glucose intolerance, type 2 diabetes mellitus (T2DM), dyslipidemia, and cardiovascular disease.Hereditary basis:There is an increased prevalence of PCOS among family members. Approximately 20% to 40% of first-degree female relatives of women with PCOS are affected by the condition, compared to a prevalence of 6% to 10% in the general population. A twin-family study showed 71% concordance in monozygotic twins, compared to 38% concordance in dizygotic twins and other sisters. The phenotypic components of PCOS, including hirsutism, hyperandrogenemia, oligomenorrhea, acne, and insulin resistance, are also increased in families of women with PCOS.Differential diagnosis:It is important to exclude thyroid dysfunction, hyperprolactinemia, nonclassical congenital adrenal hyperplasia, androgen-secreting neoplasms (ovarian and adrenal), Cushing syndrome, use of exogenous androgens, acromegaly, primary hypothalamic amenorrhea, primary ovarian failure, hyperandrogenism/insulin resistance/acanthosis nigricans (HAIRAN) syndrome (often with lipodystrophy), and syndromes characterized by insulin receptor gene mutations.