9. The effects of CT-2103 on the developing human fetus are unknown. For this reason women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation. Females of childbearing potential are defined as females who have not undergone a hysterectomy or who have not been postmenopausal for at least 24 months.