CLAG Gleevec in Relapsed or Refractory Acute Myeloid Leukemia (AML)

Inclusion Criteria:

* Men and Women of all ethnic groups whose age is ≥ 18 years old.
* Diagnosis of AML or CML blast crisis, according to World Health Organization (WHO) criteria, except acute promyelocytic leukemia AML-M3 French-American-British (FAB) subgroup. A documentation of relapse is required by a bone marrow/aspirate within 4 weeks of registration.
* Refractory or Relapsed AML. Refractory AML is defined as failure to achieve CR after 2 cycles of induction chemotherapy or persistent (\>40%) bone marrow blasts after one cycle of chemotherapy induction.
* Relapsed AML is defined as any evidence of disease recurrence after achieving complete response (CR) (more than 5% myeloblasts). Early relapse is defined as that occurring within 12 months and late relapse is defines as that occurring after 12 months.
* Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
* Patients must sign a written informed consent.
* Females of childbearing potential (FOCP) must not be pregnant or actively nursing a child. They must have a negative pregnancy test 7 days before initiation of study drug administration
* Postmenopausal women must be amenorrheic for at least 12 months to be considered of non-childbearing potential.
* Male and females of reproductive potential must agree to employ an effective barrier method of birth control throughout the duration of the trial and for 3 months following study medication discontinuation.
* Prior allogeneic or autologous stem cell transplantation is allowed.

Exclusion Criteria:

* Abnormal Kidney Functions: creatinine ≥2.5 mg/dL.
* Abnormal Liver Functions: Bilirubin more 3 mg/dL, transaminases (AST/ALT) more than 2.5 times the institutional upper limits of normal (IULN).
* Systemic active infection, unless controlled on active therapy.
* Patients with Grade III/IV cardiac problems as defined by the New York Heart Association (NYHA) Criteria ( i.e., congestive heart failure, myocardial infarction within 6 months of the study), or ejection fraction (EF)\< 30%.
* Patient has known chronic liver disease (i.e., chronic active hepatitis, hepatitis B, hepatitis C, and cirrhosis).
* Patient has known diagnosis of human immunodeficiency virus (HIV) infection.
* History of other malignancy, except non-melanotic skin cancers or no disease recurrence/progression for more than 2 years.
* Patients that have received investigational agents within 1 month of study entry.
* History of allergic reaction attributed to compounds of similar chemical or biologic composition to Gleevec or any component of the CLAG regimen
* Prior therapy with CLAG chemotherapy regimen
* Any adverse event attributable to previous chemotherapy regimen must be resolved to grade 1 or less at time of registration.