SIGLEC15, PDCD1LG2 (PD-L2), TIGIT, PDCD1 (PD-1), HAVCR2 (TIM3), CTLA4, LAG3, and CD274 (PD-L1) are transcripts related to immunological checkpoints that have a function in tumor immune evasion. The gene discussed is PDCD1; the disease is neoplasm.