ALX Oncology Doses First Patient in Phase 1 Dose Escalation Trial Evaluating ADC ALX2004 for the Treatment of EGFR-Expressing Solid Tumors
– A potential best- and first-in-class antibody-drug conjugate (ADC) for the treatment of EGFR-expressing solid tumors, ALX2004 is uniquely designed with every component optimized to maximize the therapeutic window
-First-in-human trial of ALX2004 builds upon body of positive preclinical data demonstrating dose dependent anti-tumor activity and favorable safety profile
-Initial safety data anticipated in first half 2026
Excerpt from the Press Release:
SOUTH SAN FRANCISCO, Calif., Aug. 19, 2025 (GLOBE NEWSWIRE) — ALX Oncology Holdings Inc., (“ALX Oncology” or the”Company”) (Nasdaq: ALXO), a clinical-stage biotechnology company advancing a pipeline of novel therapies designed to treat cancer and extend patients’ lives, today announced that the first patient has been dosed in the Company’s Phase 1 clinical trial for ALX2004, a potential best- and first-in-class, epidermal growth factor receptor (EGFR) ADC that is being studied for the treatment of EGFR-expressing solid tumors.
“Dosing of the first patient in the Phase 1 trial is an important milestone in ALX Oncology’s mission to develop a pipeline of best-in-class drugs; ALX2004 is our first ADC and treating our first patient with this drug is a significant step forward in fulfilling the potential of EGFR-targeted ADCs,” said Jason Lettmann, Chief Executive Officer at ALX Oncology. “Our preclinical data supports our conviction that ALX2004, with its optimized antibody, linker and payload, has the potential to overcome the toxicity challenges that have limited earlier generation EGFR-targeted ADCs. We look forward to enrolling this trial and expect to report initial safety data in the first half of 2026.”
The Phase 1 clinical trial (NCT07085091) is a first-in-human, open-label multicenter study evaluating ALX2004 in participants with advanced or metastatic select EGFR-expressing solid tumors. The study consists of a Phase 1a dose escalation portion followed by dose exploration, and a Phase 1b dose expansion.
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