- Subject agrees to use a medically acceptable form of birth control from CRU admission until at least 30 days (female subject) or 90 days (male subject) after the last dose of study drug. Males will also not donate sperm from CRU admission until at least 90 days after the last dose of study drug. If a subject is not sexually active but becomes active during study participation, the subject agrees they and their partner will use a medically accepted form of contraception for the time specified. Medically acceptable forms of contraception are: