ABSTRACT
OBJECTIVES: To assess whether the serum levels of anti-Müllerian hormone (AMH) are increased in girls with premature adrenarche because they are at a higher risk of developing polycystic ovary syndrome (PCOS) later in life. STUDY DESIGN: We measured serum levels of AMH, dehydroepiandrosterone sulfate (DHEAS), testosterone, sex hormone binding globulin, androstenedione, and 17-hyroxyprogesterone in 89 girls with premature adrenarche aged 6.98 ± 1.60 years, and in 55 prepubertal normal girls aged 6.78 ± 1.60 years. RESULTS: AMH was significantly higher in girls with premature adrenarche (2.95 ± 1.20 ng/mL) compared with normal prepubertal girls (2.00 ± 0.95 ng/mL; P < .001), whereas their body mass index SD score was similar (P > .05). DHEAS, testosterone, and androstenedione were increased in premature adrenarche, whereas sex hormone binding globulin was decreased in girls with premature adrenarche. Among the 89 girls with premature adrenarche, 33 were daughters of mothers with a positive history of PCOS, whereas the mothers of the remaining 56 girls with premature adrenarche had a negative history of PCOS. The girls with a mother with a positive history of PCOS had significantly higher AMH serum levels compared with girls with a mother with a negative history of PCOS (3.37 ± 1.72 ng/mL vs 2.70 ± 1.25 ng/mL; P < .05) with no differences in testosterone, DHEAS, androstenedione, and sex hormone binding globulin. The serum concentration of AMH was only positively related to androstenedione (r = 0.538; P < .0001). CONCLUSIONS: Girls with premature adrenarche, especially those from mothers with a history of PCOS, could have a higher risk of developing PCOS later in life because they have increased serum AMH.