Table 2 indicates that low PD-1 (PDCD1) expression levels associate with strong survival improvement in Testicular Germ Cell Tumors (TCGT), Brain Lower Grade Glioma (LGG) and Acute Myeloid Leukemia (LAML), (HR 2, 1.9 and 2.2, respectively), thus suggesting that drugs inhibiting this molecule may be beneficial in such patients. This evidence concerns the gene PDCD1 and testicular germ cell tumor.