In addition, TCGA database analyses showed that high expression of RACGAP1 was closely associated with poor prognosis (3-year overall survival) of several cancers, e.g., kidney renal papillary cell carcinoma, hepatocellular carcinoma, lung adenocarcinoma, sarcoma and skin cutaneous melanoma (Figure S5). This evidence concerns the gene RACGAP1 and cutaneous melanoma.