ALX Oncology is a Californian biotechnology company developing evorpacept, a CD47-blocking fusion protein designed to remove the 'do not eat me' signal so that antibodies such as trastuzumab can recruit macrophages against HER2-positive gastric cancer.
ALX Oncology, based in South San Francisco, develops evorpacept (ALX148), an engineered SIRP-alpha fusion protein that blocks CD47 without the red-cell toxicity of earlier CD47 antibodies, so it can be combined with tumour-targeting antibodies to enhance macrophage attack. Its lead trial ASPEN-06 tests evorpacept with trastuzumab, ramucirumab and paclitaxel in previously treated HER2-positive gastric cancer, and the company is studying the drug in other antibody combinations. Sponsor and trial facts are from the ClinicalTrials.gov registry; company facts are from the official website.
Evorpacept is an experimental immune checkpoint modulator from ALX Oncology in phase 3 trials for gastric & gastro-oesophageal junction cancer, HR-positive / HER2-negative breast cancer and HER2-positive breast cancer, with its target not yet stated publicly.
Shares A Study of Evorpacept (ALX148) in Patients With Advanced HER2+ Gastric Cancer (ASPEN-06), Evorpacept (ALX148) in Combination With Pembrolizumab in Patients With Advanced Head and Neck Squamous Cell Carcinoma (ASPEN-03), Evorpacept (ALX148) in Combination With Pembrolizumab and Chemotherapy in Patients With Advanced Head and Neck Squamous Cell Carcinoma (ASPEN-04), Evorpacept.