The vaccine candidate derives from Sanofi’s recombinant protein-based technology, as well as GSK’s pandemic adjuvant technology.
The companies launched a Phase I / II clinical trial on 3 September, with initial data expected December. These results could support a Phase III trial.
If researchers obtain positive trial data, the companies will apply for regulatory approval in the first half of next year.
Sanofi and GSK are working to step-up manufacture of the antigen and adjuvant to produce up to one million doses annually worldwide.
Sanofi Pasteur executive vice-president and global head Thomas Triomphe said: “To address a global health crisis of this magnitude, it takes partnerships and we are grateful to Canada for their collaboration, and to GSK for partnering with us to develop a safe and effective vaccine.”
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GSK said it does not expect to make a profit from Covid-19 vaccines during the pandemic. The company will invest any short-term income in research on coronavirus.
In a separate development, the Canadian government further increased its confirmed order commitment to 20 million doses of Moderna’s Covid-19 vaccine candidate, mRNA-1273.
Earlier this month, Sanofi and GSK signed a deal with the European Commission to provide up to 300 million doses of their Covid-19 vaccine candidate.
In July, Sanofi and GSK partnered with the US Government to supply up to 100 million doses of the potential vaccine. The government committed to provide up to $2.1bn to support the project.
Furthermore, the companies will supply up to 60 million doses to the UK Government.
Sanofi and GSK plan to deliver a portion of the total available global supply capacity to the COVAX initiative.