In the univariate analyses, the patients with PD1+ (>5%) cancer cells showed a significantly lower OS than the patients in whom PD1 was not detectable on cancer cells (respective 1-, 5-, and 10-year survival rates of 74.6, 43.5, and 33.9% vs. 91.1, 68.8, and 48.1%; log-rank 0.047; Table 3). This evidence concerns the gene PDCD1 and cancer.