NR1H3 and rheumatoid arthritis: Furthermore, some results in the whole group showed bias to a certain group in BMI—for example, in the RA without bDMARDs treatment group with BMI >25, CXCL10 expression was significantly lower in the IFP than SC, while in the RA with bDMARDs treatment group with BMI <25, LXRA expression was significantly lower in the IFP than SC.