- Contraindication to treatment with gonadotropins (ovarian enlargement or cyst not due to PCOS and of unknown origin, gynecological hemorrhages of unknown etiology, ovarian, uterine, or mammary carcinoma, tumors of the hypothalamus and pituitary gland, hypersensitivity to gonadotropins or to any of the excipients, extrauterine pregnancy in the previous 3 months, and medical history or risk factors for thromboembolic events)