It should be noted that not only FcγRIII and FcγRIV—the receptor that is alone sufficient to induce arthritis (7)—, but other receptors also are associated with FcRγ, including Paired Immunglobulin-like receptor-A (PIR-A), Leukocyte immunglobulin-like receptor 1C (LILR1C), Osteoclast-associated receptor (OSCAR), T cell-interacting, activating receptor on myeloid cells-1 (TARM1), Dectin-2 or some β integrins in neutrophils (29–36). The gene discussed is TARM1; the disease is arthritic joint disease.