In addition, in the tumor microenvironment, we found that PPRC1 expression in LIHC and OV had the same trend as some immune-cell molecular markers such as CD200, CD200R1, and LAIR1, although, in SKCM we found that PPRC1 expression had the opposite trend to that of some immune cell molecular markers. The gene discussed is LAIR1; the disease is neoplasm.