- Female subjects are either not of childbearing potential, defined as postmenopausal for at least 1 year or surgically sterile (bilateral tubal ligation, bilateral oophorectomy and/or hysterectomy), or are practicing at least 1 of the following methods of birth control throughout the study and for at least 150 days after the last dose of study drug: • Condoms, sponge, foams, jellies, diaphragm or intrauterine device (IUD). • Hormonal contraceptives for 90 days prior to study drug administration. • Vasectomized partner(s).