Except for LCP1 [16,17], CTSZ [16] and PTPRC [18] previously identified in RA and OA synovitis, LAP3, DNAJB11, MANF, SCARA5, EIF3K, C1orf123 and EML4 have never been described in human synovium. The gene discussed is EML4; the disease is rheumatoid arthritis.