#BestACR20Tweet RT @KDAO2011 : Abstr#0545 TCZ and Tofa may be safe in patients with resolved Hepatitis B infection. MGH study of 20 pts given TCZ or Tofa, followed 4 years; 25% on antivirals, but no cases of transaminitis from HBV or reactivation of HBV seen. #ACR20 @rheumnow