APOB and rheumatoid arthritis: Whether compared with baseline or non-TNF-α inhibitor users, TNF-α inhibitors were not related to the difference in blood lipid level in RA patients, including TC, TG, LDL-C, HDL-C, LDL/HDL, TC/HDL, apo A-I, apo B and apo B/apo A-I (129, 130).