France's Sanofi halts work on anti-Covid vaccine

France’s Sanofi halts work on anti-Covid vaccine


COVID-19
Transmission electron microscope image of SARS-CoV-2, the virus that causes COVID-19, emerging from human cells. Credit: NIAID

France’s pharmaceutical giant Sanofi, which has lagged rivals in producing new generation COVID-19 vaccines, said Tuesday it had decided to halt development of an mRNA candidate and focus on another vaccine against coronavirus.

Despite positive results at phase one and two trials, the candidate will not go to the third and final phase, Sanofi said, as they believed it would arrive too late to market with 12 billion anti-COVID doses already due to be produced by the end of the year.

Results from phase three trials of the other vaccine, developed with Britain’s GlaxoSmithKline are expected before the end of 2021.

The firms are combining a Sanofi-developed antigen, which stimulates the production of germ-killing antibodies, with GSK’s adjuvant technology, a substance that bolsters the immune response triggered by a vaccine.

Sanofi said initial results for the mRNA product showed antibodies were created by 91-100 percent of test participants two weeks after a second injection.

No side-effects were observed and tolerance of the jab was comparable to other ARN vaccines developed by Pfizer-BioNTech and Moderna.

The immune response from the Sanofi mRNA vaccine “is strong” the company’s vice-president for vaccines Thomas Triomphe told AFP.

Priority is next pandemic

Sanofi had been working since March 2020 with Translate Bio, a US firm specialising in mRNA technology, and had even bought the biotech company for 2.7 billions euros $3.2 billion) at the start of August.

But Triomphe admitted: “The need is not to create new COVID-19 ARN vaccines, but to equip France and Europe with an arsenal of messenger ARN vaccines for the next pandemic, for new pathologies.

“There is no public health need for an another messenger ARN vaccine,” against COVID-19, he added.

Sanofi has already launched new tests for a seasonal flu vaccine and intends to start clinical tests next year.

Germany’s BioNTech, which developed a coronavirus vaccine with US giant Pfizer, announced in July that it aimed to start trialling a malaria vaccine using mRNA technology.

Messenger RNA works by providing human cells with the genetic instructions to make a surface protein of the coronavirus, which trains the immune system to recognise the real virus.


France’s Sanofi expands mRNA drive with US firm purchase


© 2021 AFP

Citation:
France’s Sanofi halts work on anti-Covid vaccine (2021, September 28)
retrieved 28 September 2021
from https://medicalxpress.com/news/2021-09-france-sanofi-halts-anti-covid-vaccine.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.





https://medicalxpress.com/news/2021-09-france-sanofi-halts-anti-covid-vaccine.html