Table 2.

Rates of hepatitis B virus reactivation during rituximab-containing chemotherapy in hepatitis B surface antigen-negative, antibody to hepatitis B core antigen positive individuals as described by various studies

Study region	Study nature	No. of patients	HBV reactivation rate	Definition of HBV reactivation
Hong Kong[17]	Retrospective	23	23.8%	HBsAg seroreversion
Japan[27]	Retrospective	56	8.9%	HBsAg seroreversion
Asia-Pacific[28]	Retrospective	178	9.6%	HBsAg seroreversion
Taiwan[29]	Prospective	150	11.3%-18.9%	Multiple virologic endpoints
Hong Kong[16]	Prospective	63	41.5%	Detectable HBV DNA

HBsAg: Hepatitis B surface antigen; HBV: Hepatitis B virus.