This study is being done to find out if zanidatamab when given with evorpacept (ALX148) is safe and can treat patients with advanced (locally advanced [inoperable] and/or metastatic) human epidermal growth factor receptor 2 (HER2)-expressing cancer.
A Phase 1b/2, 2-part Open-label Study to Assess the Safety and Antitumor Activity of Zanidatamab in Combination With ALX148 in Advanced HER2-expressing Cancer
Part 1 of the study will first evaluate the safety and tolerability and establish the recommended doses (RDs) of zanidatamab in combination with evorpacept (ALX148). Part 2 of the study will evaluate the anti-tumor activity of the combination of zanidatamab plus evorpacept (ALX148) at the RD levels in indication-specific expansion cohorts.