...we identified 717 patients with advanced non-squamous NSCLC who received ICI monotherapy…in KRASMUT NSCLC, but not KRASWT NSCLC, KEAP1DEL was associated with a lower ORR (0% vs 31%, p=0.004), shorter PFS (HR 1.8, p=0.03), and shorter OS (HR 2.5, p=0.001) to immunotherapy….STK11 and KEAP1 deletion may be linked to generally worse outcomes to ICI in KRASMUT NSCLC.