Peginterferon Add‑On to siRNA JNJ‑73763989 Yields Deep HBsAg Declines but Not Durable Off‑Therapy Cure in HBeAg‑Positive CHB: Phase 2 REEF‑IT Results

Peginterferon Add‑On to siRNA JNJ‑73763989 Yields Deep HBsAg Declines but Not Durable Off‑Therapy Cure in HBeAg‑Positive CHB: Phase 2 REEF‑IT Results

In the phase 2 REEF‑IT trial, pegylated interferon‑α2a added to siRNA JNJ‑73763989 produced large HBsAg reductions and transient seroclearance in some untreated HBeAg‑positive patients, but no participant reached the prespecified sustained off‑therapy HBsAg loss endpoint at 24 weeks.