PDCD1 and non-small cell lung carcinoma: The expression of B7-H3 was found to be critically correlated with nonresponsiveness to anti-PD-1 immunotherapy in patient-derived NSCLC samples, and dual blockade of PD-L1 and B7-H3 in a murine model revealed an enhanced antitumor effect, which highlights B7-H3 as a promising anti-PD-1 combination option.