The result of the database analysis is supported by a recent study by Cheng’s group, which reported that the analysis of tumor samples from patients with non-small cell lung cancer treated with anti-PD-1/PD-L1 antibody using next-generation sequencing revealed that patients with DDR mutation (the most commonly mutated DDRs were ATM, ATR, BRCA2, POLQ, and RAD50 in the analysis) exhibited high TMB. The gene discussed is PDCD1; the disease is neoplasm.