In contrast, DPEP1, HADH, PLIN2, SCD5, SLC44A4, and UGT8 may function to suppress tumor growth via the regulation of immune cells with antitumor activity such as resting memory CD4 T cells, resting NK cells, M2 macrophages, resting and activated DCs, and resting mast cells. This evidence concerns the gene SLC44A4 and neoplasm.