CD300a (also called Inhibitory receptor protein 60, Irp60) and CD300c are paired receptors recognizing phosphatidylethanolamine and phosphatidylserine, two phospholipids normally expressed on the cytosolic surface of the plasma membrane and externalized on apoptotic cells or on some tumor cells [143] of the activating receptor. The gene discussed is CD300A; the disease is neoplasm.