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This study investigates biomarkers (through DNA, gene expression, and mutation analyses) in patients with head and neck cancer treated on a prior clinical trial (ECOG-E5397). It included patients enrolled on that trial. It is an observational (non-phase) study and has been completed.
The summary above is a plain-language rendering of the official record. The original English title is shown for reference.
Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.
DISEASE CHARACTERISTICS: * Treated on protocol ECOG-E5397 PATIENT CHARACTERISTICS: * Not specified PRIOR CONCURRENT THERAPY: * See Disease Characteristics