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). Here, CMTM6 is linked to cervical squamous cell carcinoma.