ALX Oncology Highlights Differentiated Design, Preclinical Data and Development Plans for EGFR-Targeted ADC, ALX2004, in R&D Webcast Event

Core Insights - ALX Oncology is advancing ALX2004, a potential best- and first-in-class antibody-drug conjugate (ADC) targeting EGFR-expressing solid tumors, designed to maximize therapeutic efficacy while minimizing toxicity [1][2] - The U.S. FDA has cleared the IND application for ALX2004, with clinical studies set to begin in mid-2025 and initial safety data expected in the first half of 2026 [1][6] - The company plans to initiate trials for its lead therapy, evorpacept, in breast and colorectal cancers around the same time, with significant milestones anticipated in 2026 [1] ALX2004 Development Overview - ALX2004 is developed using a proprietary linker-payload platform, featuring an affinity-tuned EGFR antibody and a stable linker-Top1i payload, aimed at enhancing anti-tumor activity and reducing toxicity [3][4] - Preclinical data indicates that ALX2004 has superior stability and a favorable safety profile compared to other ADCs, showing dose-dependent activity across various tumors and EGFR expression levels [5] Clinical Trial Plans - The Phase 1 clinical trial for ALX2004 will target EGFR-expressing solid tumors, including non-small cell lung cancer and colorectal cancer, focusing on patients with relapsed or refractory cancers [6] - The trial is expected to begin in mid-2025, with initial safety data anticipated in the first half of 2026 [1][6]