ALX presents preclinical data, Phase 1 trial-in-progress for ALX2004

ALX Oncology (ALXO) presented preclinical data and the trial design for the ongoing Phase 1 clinical trial for its ADC candidate, ALX2004, in two poster presentations at the 2025 AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics, taking place October 22 – 26, 2025 in Boston, Massachusetts. ALX2004-01 is a first-in-human study to evaluate the safety, tolerability, and preliminary efficacy of ALX2004 in patients with advanced or metastatic solid tumors that are known to express EGFR. “Our preclinical findings have shown potent anti-tumor activity and a favorable toxicity profile supporting our advancement of ALX2004 into the clinic,” said Jason Lettmann, Chief Executive Officer at ALX Oncology. “Given that toxicity challenges of earlier generation ADCs have limited the therapeutic window in the treatment of EGFR-expressing solid tumors; we are encouraged by our preclinical data that this unique molecule, ALX2004 could potentially overcome these limitations. Enrollment in this trial began in August and continues to be on track to allow us to deliver initial safety data in the first half of next year. We are pleased to present extensive preclinical data supporting ALX2004’s potential to break new ground in ADC innovation in the EGFR-targeting class at the AACR-NCI-EORTC Conference.” ALX2004 is currently being evaluated in a first-in-human, open-label multicenter study in participants with advanced or metastatic select EGFR-expressing solid tumors. The design of this Phase 1 clinical trial will also be presented at the meeting.