FLT PET/CT in Measuring Response in Patients With Previously Untreated Acute Myeloid Leukemia

This phase II trial studies fluorothymidine F 18 (FLT) positron emission tomography (PET)/computed tomography (CT) in measuring response in patients with previously untreated acute myeloid leukemia. FLT is a radioactive substance that may "light up" where cancer is in the body. FLT is injected into the blood and builds up in cells that are dividing, including cancer cells. Diagnostic procedures, such as PET/CT, may help measure a patient's response to earlier treatment.

PRIMARY OBJECTIVES: I. To evaluate the negative predictive value (NPV) of post-treatment FLT PET/CT imaging for complete remission (CR) in patients receiving induction chemotherapy for acute myeloid leukemia (AML). SECONDARY OBJECTIVES: I. To evaluate the positive predictive value (PPV) of post-treatment FLT PET/CT imaging for complete remission. II. To estimate the sensitivity and specificity of post-treatment FLT PET/CT imaging for detecting complete remission. III. To correlate FLT PET/CT imaging with biologic correlates (minimal residual disease \[MRD\] assessment) IV. To correlate FLT PET/CT imaging with relapse-free survival and overall survival. EXPLORATORY OBJECTIVES: III. To evaluate pre-treatment FLT PET/CT imaging as a predictor of complete remission. IV. To evaluate the change between pre-treatment and post-treatment FLT PET/CT imaging as a predictor of complete remission. OUTLINE: Patients receive anthracycline intravenously (IV) on days 1-3 and cytarabine IV on days 1-7 for up to 2 courses. Patients then undergo FLT PET/CT within 3 days before or after the nadir bone marrow biopsy (between days 10-17 after initiation of first induction cycle and prior to reinduction). Patients may undergo an optional FLT PET/CT prior to induction chemotherapy if it does not interfere with commencement of treatment. Patients also undergo bone marrow biopsy and aspiration and blood sample collection during screening and on the trial. After completion of study, patients are followed up at day 28-35, and then up to 1 year beyond the end of study accrual period.