Study of Tumor Samples From Patients With Lung Cancer

Inclusion Criteria: * Registration to Cancer and Leukemia Group B (CALGB) 140202 * Institutional Review Board (IRB) review and approval at the institution where the laboratory work will be performed is required * Informed consent: the CALGB does not require that a separate consent form be signed for this study * The subject population to be studied in this protocol includes patients selected from CALGB 140202; all such patients have signed a written informed consent document meeting all federal, state, and institutional guidelines as part of entry into that trial * All samples to be studied were obtained and stored as part of CALGB 140202; the material and data obtained from the patient's protocol record will be used to obtain appropriate clinical information; in no instance will the patient be contacted directly * There should be no physical, psychological, social, or legal risks associated with this study; no invasive procedures are recommended or requested * All appropriate and necessary procedures will be utilized to maintain confidentiality; all patients who have had samples submitted for analysis will have their CALGB study number used to identify specimens * This study does not require direct patient contact and no specific risk or benefits to individuals involved in the trial are anticipated; it is likely, however, that the information gained will substantially help similar patients in the future