Defence’s Arm-X Anti-Cancer Vaccine Inhibits Growth Of Pre-Established Ovarian Cancer Resulting In Complete Responses In Treated Animals

Jun 25, 2024 | News Release

Vancouver, BC, Canada, June 25th, 2024 – Defence Therapeutics Inc. (“Defence” or the “Company”), a Canadian biopharmaceutical company developing novel immune-oncology vaccines and drug delivery technologies, is pleased to announce that its second-generation ARM-X anti-cancer vaccine is therapeutically effective against pre-established ovarian cancer (ID8 model) when combined with the anti-PD-1 immune-checkpoint inhibitor. 

Using Defence’s Accum® platform, the Company previously demonstrated that AccuTOX® treatment of MSCs results in the induction of antigen cross-presentation capacity (ARM-X cells), which can mount potent anti-tumoral responses in animal pre-clinical models. This was previously achieved using various cancer models including solid T-cell lymphoma, melanoma and pancreatic cancer. Defence just completed an additional study where animals with pre-established ovarian cancer responded to a combination therapy including ARM-X and anti-PD-1. The latter group prolonged animal survival beyond 80 days post-vaccination, and it led to a complete response in almost all treated animals as shown in Figure 1. 

“This is the 4th cancer model that we efficiently targeted using our ARM-X antic-cancer vaccine. The purpose of testing our vaccine in various models is to highlight how ARM-X can be adapted to the needs of any patient, no matter the type of cancer, given that we have access to a tumor biopsy.” says Mr. Sebastien Plouffe, Chief Executive Officer of Defence Therapeutics. 

One of the major advantages of Defence’s ARM-X vaccine is the need of lower antigen amounts to manufacture the vaccine. This is important as it avoids the need of a big tumor sample in the vaccine generation. Defence is currently testing its ARM-X vaccine on colon as an additional indication. These results will set the target indication for the Phase I-IIa trials, and it also shows how versatile and adaptable can the ARM-X anti-cancer vaccine be.

About Defence:

Defence Therapeutics is a publicly-traded biotechnology company working on engineering the next generation vaccines and ADC products using its proprietary platform. The core of Defence Therapeutics platform is the ACCUMTM technology, which enables precision delivery of vaccine antigens or ADCs in their intact form to target cells. As a result, increased efficacy and potency can be reached against catastrophic illness such as cancer and infectious diseases.

For further information:

Sebastien Plouffe, President, CEO and Director

P: (514) 947-2272

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