Eligible patients had no previous treatment for the current diagnosis of NSCLC. The two treatment groups of patients will be determined by gene expression profile analysis of each patient's tumor: one group of vinorelbine-sensitive patients and one group of pemetrexed-sensitive patients. The genomic expression profiling that was utilized generated a percentage for likelihood of chemotherapy sensitivity. Patients were directed to receive the chemotherapy regimen for which the percentage of predicted sensitivity is highest. For instance, if the model predicted the likelihood of tumor sensitivity was 46% to vinorelbine and 48% to pemetrexed, then the adjuvant chemotherapy would be directed to cisplatin/pemetrexed. Patients whose tumors could not be adequately analyzed for gene expression were offered adjuvant therapy off protocol as deemed appropriate by their primary oncologist. Patients with either squamous or non-squamous cell histology were eligible to participate in this study as indicated in study protocols dated prior to January 25, 2010. An amendment to the protocol on January 25, 2010 indicated inclusion of only non-squamous histology. However, because of low accrual after January 25, 2010 (5 patients, including 2 screen failures), this report reflects the original study outcomes that includes both squamous and non-squamous histologies.