Novavax Initiates Phase 2 Portion of Phase 1/2 Clinical Trial of COVID-19 Vaccine
- Primary objectives expand evaluation of immunogenicity and safety
- Secondary objectives include preliminary efficacy assessment
- Trial to enroll up to 1,500 volunteers in
United Statesand Australia, with approximately 50 percent between 60 and 84 years of age
- Interim immunogenicity and safety data expected in fourth quarter of 2020
“We expect this Phase 2 portion of the trial to expand on the encouraging Phase 1 safety and immunogenicity data for NVX-CoV2373, and we will now look for robust immune responses in older adults,” said
The Phase 2 portion of the ongoing Phase 1/2 clinical trial is a randomized, placebo-controlled, observer-blinded study to evaluate the safety and immunogenicity of NVX-CoV2373 with Matrix-M in subjects aged 18 to 84 years. The clinical trial will assess two dose sizes (5 and 25 µg), each with 50 µg of Matrix‑M. Although the trial was designed to confirm immunogenicity and safety in adults, secondary objectives include preliminary evaluation of efficacy. The study is targeting enrollment of up to 1,500 healthy volunteers, with approximately 50 percent of participants ≥60 years of age, at up to 40 sites in the
The trial is supported by funding from the
In the Phase 1 portion of the Phase 1/2 clinical trial, conducted in
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NVX‑CoV2373 is a vaccine candidate engineered from the genetic sequence of SARS‑CoV‑2, the virus that causes COVID-19 disease. NVX‑CoV2373 was created using Novavax’ recombinant nanoparticle technology to generate antigen derived from the coronavirus spike (S) protein and contains Novavax’ patented saponin-based Matrix-M™ adjuvant to enhance the immune response and stimulate high levels of neutralizing antibodies. In preclinical trials, NVX‑CoV2373 demonstrated indication of antibodies that block binding of spike protein to receptors targeted by the virus, a critical aspect for effective vaccine protection. In its Phase 1 data of the Phase 1/2 clinical trial, NVX‑CoV2373 was generally well-tolerated and elicited robust antibody responses numerically superior to that seen in human convalescent sera. Phase 2 clinical trials began in August.
Novavax’ patented saponin-based Matrix-M™ adjuvant has demonstrated a potent and well-tolerated effect by stimulating the entry of antigen-presenting cells into the injection site and enhancing antigen presentation in local lymph nodes, boosting immune response.
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Source: Novavax, Inc.