BRACELET-1 Trial Shows Promise for Oncolytic Virus Pelareorep in HR+ Breast Cancer
- The BRACELET-1 trial demonstrated that pelareorep combined with paclitaxel achieved a 31% objective response rate and 12.1-month median progression-free survival in HR+ HER2- metastatic breast cancer patients.
- Patients receiving the paclitaxel-pelareorep combination showed enhanced T-cell proliferation by cycle 4, suggesting improved immune activation compared to paclitaxel alone.
- Adding avelumab to the combination paradoxically reduced efficacy and increased toxicity, with the triple regimen showing only 14% response rate and 5.8-month median PFS.
- The findings support further investigation of pelareorep as an immunotherapy option for HR+ HER2- breast cancer, a subtype historically resistant to immune-based treatments.
Oncolytics Biotech
Posted 6/10/2020