- Female patients must be postmenopausal (for at least 1 year), surgically sterile, practicing true sexual abstinence, OR must be using adequate contraception (in the opinion of the investigator) for the duration of the study, including the follow-up period (e.g. contraceptive implants, injectables, oral contraceptives, some intrauterine devices [IUD], and/or barrier method (condom or occlusive cap) with spermicidal foam/gel/film/cream/suppository).