Increased YAP1 expression was associated with an improved prognosis in lung cancer (OS, HR = 0.38, 95% CI = 0.29–0.48, p = 6.5e−16; FP, HR = 0.33, 95% CI = 0.22–0.49, p = 1.1e−08) and esophageal cancer (OS, HR = 0.45, 95% CI = 0.24–0.87, p = 0.014; RFS, HR = 0.11, 95% CI = 0.01–1.28, p = 0.035) and with an improved RFS in breast cancer (RFS, HR = 0.71, 95% CI = 0.59–0.84, P = 8e−5) (Figures 4A,B,E,F,I,J). This evidence concerns the gene YAP1 and breast cancer.