For IL-17B, its expression was positively correlated with the T dysfunction value in melanoma (TCGA); its expression was positively correlated with TIDE value in BLCA (r = 0.35, p < 0.001), BRCA (r = 0.33, p < 0.001), COAD (r = 0.36, p < 0.001), KIRC (r = 0.39, p < 0.001), LIHC (r = 0.19, p < 0.001), LUAD (r = 0.16, p < 0.001), LUSC (r = 0.17, p < 0.001), PAAD (r = 0.31, p < 0.001), PCPG (r = 0.25, p < 0.001), PRAD (r = 0.65, p < 0.001), READ (r = 0.45, p < 0.001), STAD (r = 0.39, p < 0.001), TGCT (r = 0.36, p < 0.001), THCA (r = 0.34, p < 0.001), and UCEC (r = 0.32, p < 0.001). This evidence concerns the gene IL17B and melanoma.