FCGR1A and cancer: Neutrophils express different types of FcR for IgG(FcγR) having subtypes capable of inducing FcγRI (CD64), FcγRIIa (CD32a), FcγRIIb (CD32b), FcγRIIc (CD32c), FcγRIIIa (CD16a), and FcγRIIIb (CD16b) having different holds for IgG1, IgG2, and IgG4 [89] in IgG-based cancer therapies.