On October 15, 2019 Oncolytics Biotech Inc. (NASDAQ:ONCY) (TSX:ONC), currently developing pelareorep, an intravenously delivered immuno-oncolytic virus, reported that the results of a metanalysis of 13 clinical studies of the Company’s systemically delivered oncolytic reovirus, pelareorep, were presented during a podium presentation at the annual International Oncolytic Virus Conference (IOVC), hosted at the Mayo Clinic in Rochester, MN on October 9-12, 2019 (Press release, Oncolytics Biotech, OCT 15, 2019, View Source [SID1234542254]). The analyses examined the effectiveness of viral replication within the tumors of patients treated systemically with pelareorep. The data demonstrated that, unlike other oncolytic viruses that require intra-tumoral delivery, intravenous (IV) systemic delivery of pelareorep resulted in 81% of patient tumor samples across multiple types of cancer testing positive for virus replication, with no infection in normal tissue. These results are from studies across a broad range of solid and liquid tumors, including metastatic disease.
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"This metanalysis across multiple clinical studies provides definitive proof that pelareorep can effectively be delivered intravenously, further demonstrating pelareorep’s ability to avoid neutralization, reach primary and metastatic disease and be a valuable therapy and immune adjuvant across a wide range of cancers," said Dr. Matt Coffey, President and CEO of Oncolytics Biotech. "By effectively and selectively targeting and replicating within tumor cells, systemically delivered pelareorep causes inflammation, labelling the tumor microenvironment with viral RNA priming the patient’s immune system. Combined with PD-1/PD-L1 checkpoint inhibition to enhance the anti-tumor immune response, pelareorep is uniquely positioned to become a backbone for many leading immuno-oncology combination regimens."
Key Findings from the Metanalysis
After IV delivery, 81% of patient tumor samples are positive for replicating reovirus (the average increases to 96% when melanoma and skin biopsies are excluded)
Tumor types that showed a high proportion of active viral replication: breast cancer, pancreatic adenocarcinoma, multiple myeloma, colorectal cancer patients with liver metastases and high-grade glioma
About Pelareorep
Pelareorep is a non-pathogenic, proprietary isolate of the unmodified reovirus: a first-in-class intravenously delivered immuno-oncolytic virus for the treatment of solid tumors and hematological malignancies. The compound induces selective tumor lysis and promotes an inflamed tumor phenotype through innate and adaptive immune responses to treat a variety of cancers and has been demonstrated to be able to escape neutralizing antibodies found in patients.