Antibody drug conjugates (ADCs) with pyrrolobenzodiazepine (PBD) payloads are promising cancer therapeutics but are limited by toxicity. Here, the authors develop a HER2-targeted ADC (DHES0815A) with a reduced potency PBD payload that demonstrated promising preclinical efficacy and nonhuman primate tolerability, but culminated in a phase I clinical trial in patients with metastatic breast cancer which was terminated due to toxicity.
- Gail D. Lewis
- Guangmin Li
- Eunpi Cho
