We also found that RiskScore was positively linked to nine immune checkpoint genes, comprising CD244, CD27, CTLA4, IDO2, LAG3, LAIR1, PDCD1, PDCD1LG2, and TIGIT, which demonstrated that STAD patients with higher RiskScore may have stronger immune evasion ability [54]. Here, LAIR1 is linked to gastric adenocarcinoma.