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Biolexis and Akston Biosciences see positive results from phase II/III trial of thermostable 2nd Gen Covid-19 vaccine

Our Bureau, Bengaluru
Friday, June 24, 2022, 14:15 Hrs  [IST]

Akston Biosciences Corporation and Biolexis, a Strides Group company, have  announced results from a phase II/III clinical trial in India of the SARS-CoV-2 vaccine, AKS-452, in which 1,600 healthy volunteers participated – 100 in an open-label bridging study and 1,500 in phase II/III, double-blind, placebo-controlled trial.
 
An interim analysis of this data shows no significant safety issues and a 91% seroconversion rate at day 56. Volunteers in the bridging study had antibody titers that persisted at statistically-significant high levels through six months, with serum taken from them showing protection against variants of concern. The results will be submitted as a prime vaccine in India for Emergency Use Authorization (EUA). Later clinical studies are planned to support approval for use as a booster shot to itself and other approved vaccines. Earlier studies in the Netherlands have demonstrated robust antibody neutralization of variants, including Delta and Omicron.
 
Akston and Strides group have already signed a licensing, manufacturing, and commercialization agreement to launch this vaccine worldwide as AmbiVax-CM. Under the agreement, Biolexis which is the vaccine and biosimilar arm of Strides group has the right to manufacture and commercialize AmbiVax-CTM in India and over 130 countries in Asia, Latin America, and Africa, mainly covering the low-and-middle-income countries (LMICs) where a significant population lacks dependable access to vaccines as a result of insufficient infrastructure to support the cold chain requirements of other Covid-19 vaccines.
 
The vaccine is a reliable, accessible alternative in these regions, allowing immunization and longevity of immunity with the boosters against the Covid variants of concern, stated the company.
 
Arun Kumar, founder of Strides Group, added, “We are pleased to know the encouraging results from the India studies of AmbiVax-CTM, particularly the high seroconversion rate that the Vaccine demonstrated. This vaccine differentiates itself by allowing room-temperature stability, higher efficacy, and safety and can offer accessibility and affordability through the economical supply chain and infrastructure requirements. As we progress to receiving the approval, we will continue exploring opportunities to fast-track its launch for the global markets.”
 
Todd Zion, Ph.D., president & CEO of Akston Biosciences, said, “The latest clinical data demonstrate the potential of this low-cost protein vaccine intended specifically for those most in need. We are very pleased to be working closely with Biolexis and Strides Group, which can supply the vaccine at scale to countries that need a practical and affordable way to protect their populations during this worldwide pandemic.”
 
The phase II/III trial, managed by Ahmedabad-based Veeda Clinical Research Limited, evaluated the safety, tolerability, and humoral immunogenicity profile, i.e., SP/RBD-specific IgG titers. Of the 1,500 healthy volunteers, 1,125 received the two 90 µg doses 28 days apart, with the first dose including AKS-452 and an adjuvant, while the second dose consisted of only AKS-452. The remaining 375 also received two doses, with the first dose including placebo and the adjuvant, while the second dose consisted only of placebo.      
 
AKS-452 does not include mRNA technology, viral vectors, or a weakened SARS-CoV-2 virus. It has been engineered to use established, low-cost antibody manufacturing techniques, such that a single production line could be capable of producing over one billion doses per year. Stability studies have demonstrated thermostability at room temperature for over six months at 25° Celsius or 7° Fahrenheit) and maintenance of potency for one month at 37° Celsius  or 99° Fahrenheit.

 

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