2. Pregnancy or breast-feeding.A negative serum pregnancy test within 7 days prior to first study treatment (Day 1, Cycle 1) for all women of childbearing potential is required. Patients of childbearing potential must agree to use a birth control method that is approved by their study physician while receiving study treatment and for 3 weeks after their last dose of study treatment. Patients must agree to not breast-feed while receiving study treatment.