ALX Oncology Seeking Accelerated OK for Evorpacept
ALX Oncology says it plans to discuss with FDA its path for seeking accelerated approval for its investigational CD47-blocker evorpacept based on “positive updated data” from the ASPEN-06 Phase 2 clinical trial demonstrating the therapy generates a durable clinical response with a well-tolerated safety profile among patients with previously treated HER2-positive advanced gastric cancer or gastroesophageal junction (GEJ) cancer. “The updated data from the ASPEN-06 trial highlight the potential clinical utility of CD47 inhibition from evorpacept in combination with trastuzumab, ramucirumab and paclitaxel in patients with previously treated HER2-positive gastric cancer,” a company release says.
ASPEN-06 is a randomized international trial (NCT05002127) evaluating evorpacept in combination with trastuzumab, ramucirumab and paclitaxel (collectively, ETRP) against trastuzumab, ramucirumab and paclitaxel in patients with HER2-positive gastric/GEJ cancer. The updated data show ETRP demonstrated an “objective response rate of 41.3% compared to 30%” for the control population, the company says.
“The results from this trial tell a clear story that when a cancer cell is expressing HER2, evorpacept can combine with a regimen containing an anti-HER2 antibody such as trastuzumab to improve upon the activity you would expect from that regimen alone,” ALX Oncology says. “This is evidenced by the near doubling of PFS [progression-free survival] at one year among the patients with HER2-positivity….”