Higher STAT5A expression was significantly associated with poorer OS in GBMLGG [HR = 1.86 (1.61, 2.15), p = 4.7e-17], LGG [HR = 1.79 (1.46, 2.18), p = 6.3e-9], and testicular germ cell tumors (TGCTs) [HR = 7.02 (1.07, 46.31), p = 0.04], while low expression of STAT5A was significantly associated with lower OS rates in SARC [HR = 0.64 (0.49, 0.82), p = 4.9e-4], KIRP [HR = 0.63 (0.46, 0.87), p = 5.8e-3], HNSC [HR = 0.86 (0.75, 0.98), p = 0.03], SKCM [HR = 0.86 (0.75, 0.99), p = 0.04], mesothelioma (MESO) [HR = 0.54 (0.33, 0.89), p = 0.01], and UVM [HR = 0.52 (0.28, 0.99), p = 0.05] (Figure 3E). Here, STAT5A is linked to testicular germ cell tumor.