PCIF1 and inflammatory bowel disease: In 19 m6A-RMRs upregulated in all eight autoimmune diseases, one m6A-RMR PCIF1 was shared by RA and inflammatory bowel disease; one m6A-RMR G3BP2 was shared by RA and autoimmune skin diseases; and three m6A-RMRs including G3BP1, WTAP, and FTO were shared by autoimmune skin diseases and inflammatory bowel diseases.