- Maintenance: Patients receive CTX IV over 1 hour on days 1-5 of weeks 0 and 3; VP-16 IV over 1 hour on days 1-5 of weeks 0 and 3 and on days 1-3 of weeks 6 and 9; CBDCA IV over 6 hours on days 1 and 2 of weeks 6 and 9; and G-CSF as in induction. Treatment continues every 12 weeks for 6 courses in the absence of disease progression.