- Female subjects must be postmenopausal or surgically sterilized. Postmenopausal females must have had no regular menstrual bleeding for at least one (1) year prior to initial dosing. Menopause will be confirmed by plasma serum FSH level at screening between 23.0-116.3 mIU/ml. Female subjects who report surgical sterilization must have had the procedure at least six (6) months prior to initial dosing.