Vir Biotechnology Inc. has announced the initiation of the ECLIPSE 2 Phase 3 clinical trial, part of its global ECLIPSE registrational program for chronic hepatitis delta $(CHD)$. The trial aims to evaluate the efficacy of combining tobevibart and elebsiran against continued bulevirtide monotherapy in patients with CHD who have not achieved undetectable levels of hepatitis delta virus $(HDV)$ RNA despite ongoing treatment with bulevirtide. ECLIPSE 2 is one of three trials in the program, designed to provide the necessary efficacy and safety data for potential submission to global regulatory agencies. This development follows compelling results from the Phase 2 SOLSTICE clinical trial, which demonstrated the potential of the investigational combination to reduce HDV to undetectable levels. The outcomes of ECLIPSE 2 will be presented in the future, pending the completion of the trial.