In GEPIA, the Kaplan–Meier plots revealed that a high TRPM2 level was associated with a short OS and/or DFS in cancers, including KIRC (OS: HR = 1.7, p = 0.00048; DFS: HR = 1.1, p = 0.46), LGG (OS: HR = 1.6, p = 0.0069; DFS: HR = 1.4, p = 0.04), OV (OS: HR = 1.4, p = 0.005; DFS: HR = 1.2, p = 0.2), THYM (OS: HR = 11, p = 0.0063; DFS: HR = 2, p = 0.14), uveal melanoma (UVM) (OS: HR = 2.6, p = 0.036; DFS: HR = 1.8, p = 0.2), and LIHC (OS: HR = 1.4, p = 0.04; DFS: HR = 1, p = 0.87) (Figure 2). This evidence concerns the gene TRPM2 and cancer.