ALX fast tracked for head-neck cancer treatment

 ALX Oncology Holdings Inc., (“ALX Oncology”) (Nasdaq: ALXO) a clinical-stage immuno-oncology company developing therapies that block the CD47 checkpoint pathway, today announced that the U.S. Food and Drug Administration (“FDA”) has granted Fast Track designation to evorpacept, a next generation CD47 blocker, in combination with KEYTRUDA® (pembrolizumab), Merck’s anti-PD-1 therapy, for the first-line treatment of adult patients with PD-L1 positive advanced head and neck squamous cell carcinoma (“HNSCC”).

The FDA’s decision is informed by the results of ALX Oncology’s phase 1 clinical trial, ASPEN-01, that showed preliminary antitumor activity and a favorable safety profile in checkpoint inhibitor-naïve patients with second-line or greater advanced HNSCC treated with evorpacept and pembrolizumab (n=10). The preliminary objective response rate of 40% in this limited population represents an improvement over historical anti-PD-1 monotherapy activity in a similar population and supported the initiation of the ASPEN-03 (NCT04675294) study in May 2021 in collaboration with Merck (known as MSD outside the US and Canada). ASPEN-03 is a randomized phase 2 multi-center study to investigate the anti-tumor efficacy of evorpacept plus pembrolizumab in patients with first-line metastatic or unresectable, recurrent PD-L1 positive HNSCC.

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