We evaluated the immunophenotype in a cohort of 145 metastatic NSCLC patients who received treatment with ICIs based regimens for metastatic setting…LTR patients had higher HLA-I expression ( 68%) than non-LTR (35%) (p= 0.013). Median CD73 expression was higher in LTR: 35% ( 95% CI 10-57.5) than non-LTR: 5% ( 95% CI 0-23.8) p=0.007.