Patients carrying STK11neg/Gal-3 high tumors had significantly reduced PFS (mPFS, 1.7 vs 13.5 months, P = 0.001) and lower benefit from ICI (DCR, 30% vs 80%, P = 0.03) compared to their counterpart....STK11neg and Gal-3high may represent a poor prognostic trait in ICI-treated NSCLC patients.