BAIAP2L1 and peripheral nervous system disorder: For example, rs11385557 in the intronic region of BAIAP2L1 was found in OpenGWAS database to be significantly (P < 7.69 × 10–5) associated with peripheral nerve disorders (Additional file 2: Table S4, #8) which is consistent with RA patients often experiencing peripheral neuropathy with pain, numbness, and muscle weakness [56].