- Female subject of childbearing potential has a negative serum pregnancy test (human chorionic gonadotropin [hCG]) at Visit 1 and agrees to use an acceptable form of contraception throughout the duration of the study OR is at least 1 year post-menopausal (defined as amenorrhea for at least 1 year) or surgically sterile. Male study subjects should be advised to use a male condom in addition to having their partner use another acceptable method during the study and for 3 months after the last dose