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.
The European Commission approved teclistamab plus daratumumab for relapsed/refractory multiple myeloma after at least 1 prior therapy, offering the regimen as early as second line.
ASCO’s ctDNA guidelines support testing for genetic alterations in select scenarios but do not endorse it for residual disease or recurrence monitoring.
Updated ASCO Living Guideline recommendations expand frontline therapy for HER2-positive gastroesophageal cancer to include zanidatamab-based regimens.