CD274 and neoplasm: The proportion of patients who had tumor cell PD‐L1 expression <1% and had an objective response by BICR was higher with nivolumab plus chemotherapy (69 [42%] of 163 patients) than with chemotherapy alone (55 [33%] of 166 patients) and lower with nivolumab plus ipilimumab (33 [20%] of 164 patients) versus chemotherapy alone.