Background: Priority of antiviral treatment for patients with chronic hepatitis B (CHB) is to increase the probability of functional cure. We aimed to synthesize evidence regarding the efficacy of different combination strategies of antiviral treatment based on interferon (IFN) and nucleos(t)ide analogues (NAs) in adults with CHB.

Methods: PubMed, Web of Science and Embase databases were searched from inception to May 26, 2019. Three types of combination strategies were studied: initial combination (IFN or NAs monotherapy as control), add-on (I: IFN add-on NAs vs. NAs; II: NAs add-on IFN vs. IFN), switch-to (I: IFN switch-to NAs vs. IFN; II: NAs switch-to IFN vs. NAs).

Results: Compared to NAs monotherapy, initial combination strategy improved the probability of HBeAg loss (RR: 1.62, 95% CI 1.33-1.97) and HBsAg loss (RR: 15.59, 95% CI 3.22-75.49), while compared to IFN monotherapy, no higher rates in the loss of HBsAg or HBeAg for initial combination. Compared to NAs monotherapy, IFN add-on NAs strategy had a higher rate of HBsAg loss (RR: 4.52, 95% CI 1.95-10.47), while compared to IFN monotherapy, NAs add-on IFN had a similar outcome. Compared to NAs monotherapy, NAs switch-to IFN strategy improved HBsAg loss (RR: 12.15, 95% CI 3.99-37.01); while compared to IFN monotherapy, IFN switch-to NAs had no improved rate of HBsAg clearance but higher rates in undetectable HBV DNA, and HBeAg loss.

Conclusion: IFN add-on NAs, or NAs switched to IFN could significantly improve the probability of HBsAg loss compared to NAs monotherapy.

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http://dx.doi.org/10.1007/s12072-020-10099-xDOI Listing

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