IgG4 - Rare but Rx Several studies #ACR25 @ACRheum were presented Outcome measures Rx #steroids #CD19 mAb #Inebilizumab 👍+RCT reduction of flares BTKi #Rilzabrutinib #Zanubrutinib #JAKi +RCT of #tofacitinib +steroids vs pred @ACRheum @RheumNow #ACR25 1163 LB02 0239 1172 https://t.co/xC3wgaN9bk