12. Highly effective contraception (i.e., methods with a failure rate of less than 1 % per year) for both male and female subjects if the risk of conception exists (Note: The effects of the trial treatment on the developing human fetus are unknown; thus, women of childbearing potential and men must agree to use highly effective contraception, defined in Protocol Appendix 9.3, or as stipulated in national or local guidelines. Highly effective contraception must be used for the duration of trial treatment, and at least for 60 days after stopping trial treatment or 6 months after stopping chemotherapy [or per label]. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this trial, the treating physician should be informed immediately).