Phase II Study of Fludarabine and Mitoxantrone, Followed by GM-CSF(Granulocyte-macrophage Colony-stimulating Factor) and Rituximab

"Initial patients (n=9) received fludarabine (25 mg/m\^2 intravenously) and mitoxantrone (10 mg/m\^2 intravenously)with sequential administration of GM-CSF(Granulocyte-macrophage colony stimulating factor) (500 µcg subcutaneously) on days 6 and 7 and rituximab (375 mg/m\^2) on day 8.~After a change in the protocol, all additional patients (n=6) received fludarabine (25 mg/m\^2 intravenously) and cyclophosphamide (250 mg/m\^2 intravenously)with sequential administration of GM-CSF (500 µcg subcutaneously) on days 6 and 7 and rituximab (375 mg/m\^2) on day 8. All patients received additional doses of GM-CSF (days +8 through +14) were given for patients to reduce variability in neutropenic management."