Bispecific antibodies are recombinant molecules that simultaneously bind a tumor-associated antigen on plasma cells, such as B-cell maturation antigen (BCMA) or G protein-coupled receptor class C group 5 member D (GPRC5D), and CD3 on T cells, thereby redirecting immune effector cells against the malignant clone [112]. This evidence concerns the gene GPRC5D and neoplasm.