with TNFi therapy in RA: new ANA seroconversion is common (75%) TNFi-induced lupus is rare and mild (in this cohort of ANA/dsDNA neg RA pts from Porto) so don't be tempted to serially check the ANA with TNFi Rx! Let's put this rare habit to bed POS0204 #EULAR2021 @RheumNow https://t.co/5da34Ya3Xp