However, after reviewing the location of the reported RA-associated variants, we found that only 9 of over 200 variants are located in the exome area, including CTLA4 (rs231775), FCGR2A (rs1801274), IL6R (rs2228145), OLIG3 (rs2230926), PTPN22 (rs2476601), RTKN2 (rs3125734), SH2B3 (rs3184504), TNFAIP3 (rs223092) and TYK2 (rs34536443). The gene discussed is TYK2; the disease is rheumatoid arthritis.