In addition, we further investigated the association of MPC1 expression with immune cell infiltration levels in the cancer types with the strongest positive and negative correlations and determined that MPC1 expression showed strong positive correlations with the levels of infiltrating B cells (r = 0.647, P = 7.57e-15), CD8+ T cells (r = 0.54, P = 5.59e-10), CD4+ T cells (r = 0.569, P = 7.57e-11), macrophages (r = 0.529, P = 1.50e-09), neutrophils (r = −0.067, P = 4.78e-01) and DCs (r = 0.661, P = 1.16e-15) in THYM (Fig. 6b). Here, MPC1 is linked to cancer.