Our results revealed that CMTM6 mRNA expression was associated with PD-L1 protein expression in BRCA, CESC, CHOL, glioblastoma multiforme (GBM), HNSC, KIRP, sarcoma (SARC), STAD, and uterine carcinosarcoma (UCS) (Figure 3, Figure S1). This evidence concerns the gene CD274 and cervical squamous cell carcinoma.