Can we predict which RA pts will have secondary failure to TNFi in advance? B-cell activating factor (BAFF) may play a role, and in age >54, pre-TNFi BAFF levels predict anti-drug Ab. A potential step toward better drug survival? La Paz, Madrid THU0170 #EULAR2020 @RheumNow https://t.co/NRQHO2cVuf