RATIONALE: Studying samples of tissue and blood from patients with cancer in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. PURPOSE: This research study is looking at tissue and blood samples from patients with acute myeloid leukemia.
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Presence of molecular markers that fulfill eligibility criteria in diagnostic samples from AML patients considered for CALGB therapeutic protocols
Timeframe: baseline
Frequency of specific single-gene markers over-expression and levels of promoter methylation of specific genes
Timeframe: baseline
Predictive value of specific single-gene markers
Timeframe: baseline
Microarray multi-gene and multi-miR expression signatures
Timeframe: baseline