- Arm II: During course 1, patients receive mitoxantrone IV on days 1, 3, and 5 and cytarabine, etoposide, and G-CSF or placebo as in course 1 of arm I. During course 2, patients receive mitoxantrone and etoposide as in course 1 of arm II, cytarabine as in course 2 of arm I, but no G-CSF or placebo unless PBSC are harvested.