Patients with bilateral ovarian endometriomas presented the lowest median AMH levels, compared to women suffering from unilateral ovarian endometriosis (0.55; IQR: 0.59 vs. 2.00; IQR: 2.80; p < 0,001) and the control group (0.55; IQR: 0.59 vs. 2.84; IQR: 3.2; p < 0.001). The gene discussed is AMH; the disease is ovarian endometriosis.