Particularly in nonsquamous NSCLC, KRAS mutation remarkably interacted with its co-occurring mutations in TP53, STK11, PTPRD, RBM10, and ATM. Based on single mutation-based prediction models, adding interaction terms (referred to as inter-model) improved discriminative utilities in both training and validation sets. The gene discussed is KRAS; the disease is non-small cell lung carcinoma.