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Oncolytics Biotech Inc T.ONC

Alternate Symbol(s):  ONCY

Oncolytics Biotech Inc. is a biotechnology company. The Company is focused on developing pelareorep, an intravenously delivered immunotherapeutic agent that activates the innate and adaptive immune systems and weakens tumor defense mechanisms. This compound induces anti-cancer immune responses and promotes an inflamed tumor phenotype turning cold tumors hot through innate and adaptive immune responses to treat a variety of cancers. This improves the ability of the immune system to fight cancer, making tumors more susceptible to a broad range of oncology treatments. The Company’s primary focus is to advance its programs in hormone receptor-positive / human epidermal growth factor 2- negative (HR+/HER2-) metastatic breast cancer and advanced/metastatic pancreatic ductal adenocarcinoma to phase 3 licensure-enabling studies. In addition, it is exploring opportunities for registrational programs in other gastrointestinal cancers through its GOBLET platform study.


TSX:ONC - Post by User

Comment by Noteableon Sep 18, 2023 12:52pm
84 Views
Post# 35641625

RE:RE:RE:RE:G12C/G12V KRAS mutation in PC & CRC patients respond to Pela

RE:RE:RE:RE:G12C/G12V KRAS mutation in PC & CRC patients respond to PelaPreconditioning of the tumor microenvironment (TME) with oncolytic reovirus converts CD3-bispecific antibody treatment into effective immunotherapy - Christianne Groeneveldt et al.

Results

Replication-competent reovirus induced an early interferon signature, followed by a strong influx of natural killer cells and CD8+ T cells, at the cost of FoxP3+ Tregs. Viral replication declined after 7 days and was associated with a systemic activation of lymphocytes and the emergence of intratumoral reovirus-specific CD8+ T cells. Although tumor-infiltrating T cells were mostly reovirus specific and not tumor-specific, they served as nonexhausted effector cells for the subsequently systemically administered CD3-bsAbs. Combination treatment of reovirus and CD3-bsAbs led to the regression of large, established KPC3, B16.F10 and BT474 tumors. Reovirus as a preconditioning regimen performed significantly better than simultaneous or early administration of CD3-bsAbs. This combination treatment induced regressions of distant lesions that were not injected with reovirus, and systemic administration of both reovirus and CD3-bsAbs also led to tumor control.

Conclusions

Oncolytic reovirus administration represents an effective strategy to induce a local interferon response and strong T-cell influx, thereby sensitizing the tumor microenvironment for subsequent CD3-bsAb therapy. This combination therapy warrants further investigation in patients with non-inflamed solid tumors.


https://jitc.bmj.com/content/jitc/8/2/e001191.full.pdf
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