Hepatitis B virus (HBV) reactivation, in some cases resulting in fulminant hepatitis, hepatic
failure and death, can occur in patients treated with anti-CD20 antibodies such as GAZYVA.
HBV reactivation has been reported in patients who are hepatitis B surface antigen (HBsAg)
positive and also in patients who are HBsAg negative but are hepatitis B core antibody (anti-HBc)
positive. Reactivation has also occurred in patients who appear to have resolved hepatitis B
infection (i.e., HBsAg negative, anti-HBc positive, and hepatitis B surface antibody [anti-HBs]
positive).
HBV reactivation is defined as an abrupt increase in HBV replication manifesting as a rapid
increase in serum HBV DNA level or detection of HBsAg in a person who was previously
HBsAg negative and anti-HBc positive. Reactivation of HBV replication is often followed by
hepatitis, i.e., increase in transaminase levels and, in severe cases, increase in bilirubin levels,
liver failure, and death.
Screen all patients for HBV infection by measuring HBsAg and anti-HBc before initiating
treatment with GAZYVA. For patients who show evidence of hepatitis B infection (HBsAg
positive [regardless of antibody status] or HBsAg negative but anti-HBc positive), consult
physicians with expertise in managing hepatitis B regarding monitoring and consideration for
HBV antiviral therapy.
Monitor patients with evidence of current or prior HBV infection for clinical and laboratory
signs of hepatitis or HBV reactivation during and for several months following treatment with
GAZYVA. HBV reactivation has been reported for other CD20-directed cytolytic antibodies
following completion of therapy.
In patients who develop reactivation of HBV while receiving GAZYVA, immediately
discontinue GAZYVA and any concomitant chemotherapy, and institute appropriate treatment.
Resumption of GAZYVA in patients whose HBV reactivation resolves should be discussed with
physicians with expertise in managing hepatitis B. Insufficient data exist regarding the safety of
resuming GAZYVA in patients who develop HBV reactivation.
Hepatitis B virus (HBV) reactivation, in some cases resulting in fulminant hepatitis, hepaticfailure and death, can occur in patients treated with anti-CD20 antibodies such as GAZYVA.HBV reactivation has been reported in patients who are hepatitis B surface antigen (HBsAg)positive and also in patients who are HBsAg negative but are hepatitis B core antibody (anti-HBc)positive. Reactivation has also occurred in patients who appear to have resolved hepatitis Binfection (i.e., HBsAg negative, anti-HBc positive, and hepatitis B surface antibody [anti-HBs]positive).HBV reactivation is defined as an abrupt increase in HBV replication manifesting as a rapidincrease in serum HBV DNA level or detection of HBsAg in a person who was previouslyHBsAg negative and anti-HBc positive. Reactivation of HBV replication is often followed byhepatitis, i.e., increase in transaminase levels and, in severe cases, increase in bilirubin levels,liver failure, and death.Screen all patients for HBV infection by measuring HBsAg and anti-HBc before initiatingtreatment with GAZYVA. For patients who show evidence of hepatitis B infection (HBsAgpositive [regardless of antibody status] or HBsAg negative but anti-HBc positive), consultphysicians with expertise in managing hepatitis B regarding monitoring and consideration forHBV antiviral therapy.Monitor patients with evidence of current or prior HBV infection for clinical and laboratorysigns of hepatitis or HBV reactivation during and for several months following treatment with
GAZYVA. HBV reactivation has been reported for other CD20-directed cytolytic antibodies
following completion of therapy.
In patients who develop reactivation of HBV while receiving GAZYVA, immediately
discontinue GAZYVA and any concomitant chemotherapy, and institute appropriate treatment.
Resumption of GAZYVA in patients whose HBV reactivation resolves should be discussed with
physicians with expertise in managing hepatitis B. Insufficient data exist regarding the safety of
resuming GAZYVA in patients who develop HBV reactivation.
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