Claims study of RA, PsA, AS/SpA patients on TNF inhibitors shows a comparison of 31,527 MTX vs 34,651 TNFi initiators. MTX was D/C sooner in PsA & AS [aHR 1.10, 1.23) vs RA pts. Concomitant MTX reduced risk of TNFi D/C in all [aHR 0.85, 0.81, 0.79] https://t.co/0l2J2FDsUm