However, in another study, obese PCOS women have significantly lower AMH levels compared to lean PCOS women, in each of the A, B, and C phenotypes (A—hyperandrogenism, oligo-anovulation, and polycystic ovarian morphology; B—hyperandrogenism and oligo-anovulation; C hyperandrogenism and polycystic ovarian morphology) of PCOS [68]. This evidence concerns the gene AMH and hyperandrogenism.