AV-203 (Anti-ERBB3 mAb)
AV-203 is a clinical-stage ErbB3 (HER3) inhibitory antibody candidate designed to inhibit both ligand-dependent and ligand-independent ErbB3 signaling. ErbB3 is a receptor that is typically expressed in many human cancers, and AV-203 has demonstrated preclinical activity in a number of different tumor models including breast, head and neck, lung, ovarian and pancreatic cancers.
AVEO previously completed a Phase 1, open-label, dose-escalation study of AV-203 in patients with advanced solid tumors. In this study, AV-203 was found to be generally safe and well-tolerated, with an early signal of activity consistent with preclinical data showing the potential for heregulin or neuregulin, the only known ligand for ErbB3, to serve as a biomarker predictive of AV-203 anti-tumor activity.
AV-203 is an investigational drug and has not yet been approved by the U.S. Food and Drug Administration (FDA)