The positive correlation between VISTA, PDL1, and PD1 expressions was in agreement with the literature in non-small cell lung cancer (NSCLC), ENKTCL, HGSOC, breast cancer, gastric cancer, oral squamous cell carcinoma, and epithelioid malignant pleural mesothelioma (5, 8, 17, 30, 32, 38–40). Here, PDCD1 is linked to gastric cancer.