- Arm II: Patients receive paclitaxel IV on day 1 and ifosfamide IV on days 1-3 every 21 days. Filgrastim (G-CSF) is given subcutaneously beginning on day 4 until granulocyte count is greater than 2,000/mm3. Paclitaxel therapy may precede or be given concurrently with ifosfamide.