Eight prognosis-related cancers, namely, CESC, SKCM, GBM, LGG, GBMLGG, KIRC, PRAD, and UVM, are highly positively correlated with at least 36 of 46 immune checkpoints such as CD200 receptor 1, CD86, and programmed cell death 1 ligand 2 (PCD1LG2). This evidence concerns the gene CD200R1 and cancer.