RATIONALE: Studying samples of tissue 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 laboratory study is looking at previously collected and stored tissue samples from patients previously enrolled in a completed National Cancer Institute clinical trial.
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Analyses of stored human samples, specimens, and data collected from patients previously enrolled in a terminated National Cancer Institute-Institutional Review Board clinical trial
Correlation of plasma levels and pharmacokinetics with disease burden and presence of antibodies
Correlation of tumor markers with disease burden
Utility of tumor markers for following patients after treatment