🩸 Hb levels markers of RA activity and structural progression? Boston BRASS registry: 1500+ patients. Low hb at headline associated w/ MTX TNFi and ⬆️ increase in TSS. Not that surprising provided low Hb is a marker of systemic inflammation. #Abtr0786 #ACR21 @Rheumnow https://t.co/eQLGxsANkk