CD274 and neoplasm: Patients were stratified as IC1/2/3 or TC1/2/3 for those with PDL-1 expression of 1% or more in tumor cells, TC2/3 or IC2/3 for those with PDL-1 positivity of 5% or more in tumor cells and TC 3 for those with 50% or more PDL-1 positivity in tumor cells and in a complementary way IC3 for those with 10% or more positivity and finally IC0 or TC 0 were for those with less than 1% of PDL-1 positivity in tumor cells.