Antimüllerian hormone level predicts ovulation in women with polycystic ovary syndrome treated with clomiphene and metformin

Abstract

ObjectiveTo describe serum anti-Müllerian hormone (AMH) concentrations in a large, well-phenotyped cohort of women with polycystic ovary syndrome (PCOS) and evaluate whether AMH predicts successful ovulation induction (OI) in women treated with clomiphene and metformin. DesignSecondary analysis of randomized controlled trial Subjects333 women with anovulatory infertility attributed to PCOS who participated in thedouble blind randomized trial entitled The Pregnancy in Polycystic Ovary Syndrome I (PPCOSI) study (registration number NCT00068861) who had serum samples from baselinelaboratory testing available for further serum analysis were studied. Main Outcome MeasuresThe association between baseline AMH concentration in each of the three treatment groups and ovulation rates, pregnancy rates and live birth rates were assessed. Results322 individuals had a baseline AMH concentration available, of which the mean AMH was 11.7 ± 8.3 ng/mL with a range from 0.1 to 43.0 ng/mL. With each unit (1 ng/mL) increase in baseline AMH, the odds of ovulation decreased by 10 percent (OR 0.90, 95% CI 0.86-0.93); this effect did not differ by treatment group. Women with a high baseline AMH concentration (>8 ng/mL) were significantly less likely to ovulate compared to those with a normal baseline AMH concentration (<4 ng/mL) (OR 0.23, 95% CI 0.05-0.68). This remained statistically significant when controlling for confounders, including age, body mass index, time in study, and Homeostatic Model Assessment for Insulin Resistance (HOMA-IR) score (p=0.008). Ovulation occurred even at very high AMH concentrations; there was no maximum level noted at which no ovulation events occurred. Baseline AMH concentration was not associated with pregnancy or live birth rates when controlling for confounders (p=0.947 and p=0.848, respectively). ConclusionThese AMH values of well-phenotyped individuals with PCOS adds to the literature and will aid in identifying AMH criteria for the diagnosis of PCOS. In women with infertility and PCOS, a higher AMH concentration was associated with reduced odds of ovulation with OI with clomiphene, clomiphene+metformin and metformin.