| Inclusion Criteria: | 1) Patients with refractory or relapsed acute lymphocytic leukemia (ALL).
2) Signed informed consent indicating that patients are aware of the investigational nature of this study in keeping with the policies of UTMDACC.
3) Patients of any age are eligible.
4) Patients must have been off chemotherapy for 1 week prior to entering this study and recovered from the toxic effects (< grade 2) of that therapy, unless there is evidence of rapidly progressive disease. Use of high dose steroids with dexamethasone is allowed during the first 2 courses of therapy. Imatinib mesylate (Gleevec) must be stopped 1 week prior to entering this study.
5) Adequate liver function (bilirubin of < 3 mg/dL, SGPT < 5 x ULN) and renal function (creatinine < 3mg/dL) unless proven to be related to disease infiltration.
6) Women of childbearing potential must practice contraception. Child bearing potential defined as not post-menopausal for 12 months or no previous surgical sterilization. Men and women must continue birth control for the duration of the trial. |