Vancouver, British Columbia, November 10, 2020 — BioVaxys Technology Corp. (CSE: BIOV, FRA:5LB) (“BioVaxys”) is pleased to announce that results from its preclinical animal study (also known as the “murine model study”) of BVX-0320, its Covid-19 vaccine candidate, show that the vaccine elicits a positive immune response against the SARS-CoV-2 s-spike protein. Previous interim data from the study showed it possessed an excellent emerging tolerability profile with no noteworthy clinical observations or observed toxicities in the mice. When the study concluded after 6 weeks, the excellent safety and tolerability profile was maintained.
The preclinical study, which began in September 2020 and was conducted by leading independent contract research organization (“CRO”) Charles River Laboratories, Inc. under contract with BioVaxys, evaluated the anti-virus immune response elicited by BVX-0320 in a controlled murine model by measuring the development of antibodies to the protein that binds the virus to human cells. Following two injections of BVX-0320 together with the immunological adjuvant, QS21, to 28 mice at four dosage levels, 96.4% developed positive antibody responses detected at week 6. As expected, prior to administering BVX-0320, all animals were antibody-negative, except for one mouse that had a borderline response. Importantly, mice that received the QS21 adjuvant without BVX-0320 developed no antibody responses.
Kenneth Kovan, co-founder, President and Chief Operating Officer of BioVaxys spoke to the results, “As the early data shows that BVX-0320 stimulates an antibody response to the SARS2 s-spike protein, we would expect to see a similar response against live virus infection. Although that work remains to be done, this new data is pivotal at this stage of development of our vaccine.”
BioVaxys and Charles River Laboratories continue to analyze the experimental data to determine the antibody levels induced by each dose and to measure the T cell responses. The latter consists of stimulating T cells obtained from the same mice with viral peptides and measuring the degree of T cell activation using the established analytical method of flow cytometry and the production of cytokines, including IL2 and gamma interferon. In a separate study, the mouse sera (collected from the test animals) will be tested for ability to inactivate live SARS-Cov-2 virus. Results are anticipated within the next month.
Upon completion of the data analysis, BioVaxys anticipates taking further steps to pursue regulatory approval for a Phase I study of its BVX-0320 vaccine candidate in humans.
James Passin, the CEO of BioVaxys, stated, “Although still early, we are very encouraged that the emerging profile for BVX-0320 is a relatively uncomplicated manufacturing process and a temperature-stable vaccine suitable for broad distribution, which lends itself to address a pandemic.” Passin further stated, “We hope to leverage this data to accelerate ongoing discussions with potential pharmaceutical partners on the development of new viral antigen vaccine candidates based on our haptenized viral protein vaccine platform technology.”
BioVaxys’ product pipeline includes BVX-0918A, an IND-stage haptenized cancer cell vaccine for treating late stage ovarian cancer. In Phase I and Phase II clinical studies previously conducted by BioVaxys, co-founder and Chief Medical Officer, Dr. David Berd, using an earlier generation of the BioVaxys cancer vaccine on nearly 500 patients with melanoma or ovarian cancer, the haptenized cell platform showed significant clinical promise.
Dr. Berd commented that, “A post-SARS2 infection T cell response appears to be a defining characteristic following recovery in COVID-19 patients. As we have observed significant T cell responses in previous studies following vaccination with haptenized proteins in cancer patients, our belief is that we will see the same clinical results with our haptenized vaccine platform in in viral diseases.”
BioVaxys has developed its vaccine technology platforms based on the established immunological concept that modifying proteins with simple chemicals called haptens makes them more visible to the immune system. The process of haptenization “teaches” a patient’s immune system to recognize and make target proteins more ‘visible’ as foreign, thereby stimulating an immune response.
For greater certainty, BioVaxys is not making any express or implied claims that it has the ability to treat the SAR-CoV-2 virus at this time.
About BioVaxys Technology Corp.
Based in Vancouver, BioVaxys Technology Corp. is a British Columbia-registered, early stage biotechnology company that is developing viral and oncology vaccine platforms, as well as immuno-diagnostics. The Company is advancing a SARS-CoV-2 vaccine based on its haptenized viral protein technology, and is planning a clinical trial of its haptenized autologous cell vaccine used in combination with anti-PD1 and anti-PDL-1 checkpoint inhibitors that will initially be developed for ovarian cancer. Also in development is a diagnostic for evaluating the presence or absence of a T cell immune response to SARS-CoV-2, the virus that causes COVID-19. BioVaxys has two issued US patents and two patent applications related to its cancer vaccine, and pending patent applications for its SARS-CoV-2 (Covid-19) vaccine and diagnostic technologies. BioVaxys common shares trade on the CSE under the stock symbol “BIOV” and are listed on the Frankfurt Bourse (FRA: 5LB).