In total, 110 specimens were tested, among which 36 oral melanoma, 7 OS, 6 HSA, 3 grade III MCT, 4 mammary adenocarcinoma, and 3 prostate adenocarcinoma specimens were PD-L1 positive (Figs 2 and 3, and Table 1). This evidence concerns the gene CD274 and breast adenocarcinoma.