We found that the additional regressors had either non-significant HR values or non-statistically significant p-values, or both, with the exception of a parameter “anti-PD-1 therapy” in lung squamous cell carcinoma (Supplementary Table 4), where the smallest HR of 0.06 was assigned to anti PD-1 therapy status. This evidence concerns the gene PDCD1 and squamous cell lung carcinoma.