Zanidatamab in Previously-Treated HER2-Positive (HER2+) Biliary Tract Cancer (BTC): Overall Survival (OS) and Longer Follow-up From the Phase 2b HERIZON-BTC-01 Study

Zanidatamab is a HER2-targeted bispecific antibody that binds to two non-overlapping HER2 domains and crosslinks neighboring HER2 proteins. In the primary analysis of the phase 2b HERIZON-BTC-01 trial (NCT04466891), after a median follow-up of 12.4 months, zanidatamab showed encouraging antitumor activity with rapid and durable responses and a manageable safety profile in patients with previously treated HER2+ BTC.