COVID-19 Clinical Trial
Official title:
A Phase IIb/3 Randomized, Multi-Center, Placebo-Controlled Noninferiority Study to Evaluate the Safety, Immunogenicity and Potential Efficacy of an rVSV-SARS-CoV-2-S Vaccine (IIBR-100) in Adults Compared to an Approved COVID-19 Vaccine
IIBR-100 (VSV-ΔG) is a self-propagating live virus vaccine that contains the spike protein of the Wuhan wild-type SARS-CoV-2 virus. Preclinical and phase 1/2 trials have demonstrated no safety signals of concern and have further demonstrated immunologic response that approximates the response seen in convalescent individuals. The purpose of this phase 2b/3 trial is to document the non-inferiority of IIBR-100 vs. an already-approved vaccine for COVID-19.
STUDY RATIONALE: The SARS-CoV-2 virus is responsible for the COVID-19 pandemic, perhaps the deadliest in 100 years. The pandemic emerged from Wuhan Province in China in December 2019 and was declared by the WHO Director-General a Public Health Emergency of International Concern on 30 January 2020. Early cases have been reported in Israel around February 2020, and at the time this protocol is being drafted. The virus has spread to 190 countries with more than 198 million confirmed cases and more than 4.2 million confirmed deaths as of August 2, 2021 (WHO website https://covid19.who.int/). In an effort to curb the pandemic, the Israel Institute for Biological Research (IIBR) has developed a replication-competent recombinant VSVΔG-spike vaccine (rVSV-SARS-CoV-2-S, IIBR-100), in which the glycoprotein of VSV is replaced by the spike protein of the SARS-CoV-2 virus. Pre-clinical data suggested IIBR-100 as a safe, efficacious, and protective vaccine against SARS-CoV-2 infection. In addition, clinical experience from over 20,000 subjects vaccinated with Ervebo®, an Ebola vaccine developed by Merck & Co. and licensed by FDA in 2019, also supports the safety of the VSV-ΔG backbone. An overlapping Phase I/II study in Israel is showing a good safety profile. This study is intended to support late-stage clinical studies and eventual mass immunization of the Georgian population. STUDY DESIGN: This is a Phase IIb/3, prospective, randomized, comparator-controlled, observer-blind, multi-center non-inferiority study. Subjects will receive two intramuscular (IM) injections of the IIBR-100 (prime-boost) separated by 28 days consisted of 1 ml replicating viral rVSV SARS-CoV-2-S vaccine or active comparator. Injection will be performed at Day 0 and Day 28±2d in the deltoid muscle and will be followed through 12 months post last vaccination. Follow-up (FU) visits will occur 1, 2 and 4 weeks, as well as, 2 ,3, 6, 9, and 12 months post last vaccination. The primary outcome will be PCR+ infection with COVID-19 six months after vaccination. Key secondary outcome will be serologic immunity. Reactogenicity will be assessed at these visits, and blood will be drawn for immunogenicity assays. Additional safety and reactogenicity data will be solicited via electronic diary and telephone calls to subjects performed 1 and 2 days post each vaccination. Reactogenicity will be measured by the occurrence of solicited injection site reaction and systemic reaction from the time of each vaccination through 7 days post each vaccination. Unsolicited non-serious Adverse Events (AEs), Serious adverse events (SAEs), new-onset chronic medical conditions (NOCMCs) and medically-attended adverse events (MAAEs) will be collected through 12 months after the last vaccination. Clinical safety laboratory evaluations will be performed at screening, as well as immediately prior to and 7 days post each vaccination. ;
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