Inovio Launches Zika Vaccine Trial
News Aug 31, 2016
Inovio Pharmaceuticals, Inc. has announced it has initiated a clinical study of its preventive Zika vaccine (GLS-5700) in 160 subjects in Puerto Rico, where the Zika virus outbreak has been declared a public health emergency. The CDC estimates Zika will infect more than 25% of the Puerto Rican population by year end, providing the potential for this study’s placebo control design to provide exploratory signals of vaccine efficacy.
Dr. J. Joseph Kim, Inovio’s President and CEO, said, “The rapid progression of the Zika outbreak in Puerto Rico provides an immediate and unique opportunity to assess a preventive vaccine in a real world setting. Inovio and its collaborators are moving ahead with this second Zika vaccine clinical trial to evaluate safety, immune responses, and possible signals of vaccine efficacy. If the results are promising, we plan to meet with regulators in 2017 to map out the most efficient path forward to develop our Zika vaccine and help mitigate this widespread Zika outbreak that has expanded into the continental United States.”
Inovio is developing its Zika vaccine, GLS-5700, with GeneOne Life Science, Inc. (KSE: 011000) and academic collaborators from the US and Canada who are also working to advance Inovio’s Ebola and MERS vaccines through clinical development.
In June, Inovio was the first to commence a human Zika trial, with sites in the U.S. and Canada. All 40 subjects for the first clinical study have been fully enrolled and dosed. Inovio expects to report results before the end of this year.
There are no approved vaccines or therapies for Zika virus infection. While multiple companies and academic groups have announced development plans for Zika virus vaccines, only Inovio and a US government research center have started human clinical studies.
Inovio’s second clinical study is a placebo-controlled, double-blind trial involving 160 healthy adult volunteers (80 subjects will receive vaccine and 80 subjects will receive placebo) to evaluate the safety, tolerability and immunogenicity of GLS-5700 administered with Inovio’s CELLECTRA®-3P device. This proprietary intradermal DNA vaccine delivery device has been shown to maximize antigen expression and immune responses in multiple human studies. Inovio will also assess differences in Zika infection rates in participants given either placebo or vaccine as part of an exploratory endpoint. In preclinical testing, this synthetic vaccine induced robust antibody and T cell responses - the immune responses necessary to fight viral infections - in small and large animal models.
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