Based on the results after adjusting for tumor purity, we observed that the level of GPI expression was significantly correlated with multiple immune markers, including CD20, CD70, CD25, CD278, CD191, CD195, CD360, CD196, FOXP3, CD73, PD-1, CTLA4, LAG3, CD68, NOS2, CD163, CD206, CD86, CD14, CD57, KIR3DL1, CD7, CD16, CD1C, and CD141 (p < 0.05, Table 2). Here, KIR3DL1 is linked to neoplasm.