Celsion Corporation Highlighted its PLACCINE Vaccine Platform Technology During Oral Presentation at the World Vaccine Congress

Proprietary, Formulated DNA Plasmid Vaccine Candidate Shows Neutralizing
Activity Against 2 Strains of the COVID-19 Virus

The Goal to Provide Broader Range Protection within a Highly Flexible Platform
Appears to Show Promise

Excerpt from the Press Release:

LAWRENCEVILLE, N.J., April 21, 2022 (GLOBE NEWSWIRE) — Celsion Corporation (NASDAQ: CLSN), a clinical-stage company focused on DNA-based immunotherapy and next-generation vaccines, today presented its PLACCINE platform technology at the World Vaccine Congress taking place in Washington D.C. In an oral presentation during a Session on Cancer and Immunotherapy, Dr. Khursheed Anwer, Celsion’s Chief Science Officer, highlighted the Company’s technology platform in his presentation entitled: “Novel DNA Approaches for Cancer Immunotherapies and Multivalent Infectious Disease Vaccines.” PLACCINE is one of three platform technologies Celsion has for a range of therapeutics in oncology and immunotherapy. A copy of Dr. Anwer’s presentation is available on the investor portion of the Celsion website under Scientific Presentations.

“PLACCINE is demonstrating the potential to be a powerful platform that provides for rapid design capability for targeting two or more different variants of a single virus in one vaccine,” said Dr. Khursheed Anwer, Chief Science Officer at Celsion. “There is a clear public health need for vaccines today that address more than one strain of viruses, like COVID-19, which have fast evolving variant capability to offer the widest possible protection. Murine model data has thus far been encouraging and suggests our approach provides not only flexibility, but also the potential for efficacy comparable to benchmark COVID-19 commercial vaccines with durability to protect for more than 6 months.”

Dr. Anwer continued, “In the murine model, our multivalent vaccine targeted against two different variants showed to be immunogenic as determined by the levels of IgG, neutralizing antibodies, and T-cell responses. Additionally, our multivalent vaccine was equally effective against two different variants of the COVID-19 virus while the commercial mRNA vaccine appeared to have lost some activity against the newer variant. We are continuing to evaluate our technology and look forward to the results from our ongoing proof-of-concept non-human primate study evaluating our PLACCINE vaccine against the challenge from live SARS-CoV-2 virus in the second quarter, with durability results available in the second half of this year.”

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