Compared to KRAS+/KEAP1wt, KRAS+/ KEAP1+ pts had poor PFS (median 1.1 vs 7.5 m, p < 0.0001) and OS (1.1 vs. 27.8 m, p < 0.0001) measured from start of initial therapy....Our data shows that pts with KRAS co-mt with STK11/KEAP1 had worse PFS and OS with the addition of immunotherapy compared to chemotherapy alone