January 26, 2022

Blog @ Munaf Sheikh

Latest news from tech-feeds around the world.

COVID vax protection may be ‘shakier’ against Omicron mutations


Researchers have compiled a list of mutations in the SARS-CoV-2 spike protein that may make the Omicron variant more resistant to neutralizing antibodies, including those from vaccinations.

That could increase the risk of breakthrough cases of COVID-19.

“Since the SARS-CoV-2 virus will not stop mutating, our goal is to provide a community resource to rapidly identify, aggregate, and share high-quality data…”

A blog post by Gene Godbold, a senior scientist at Signature Science LLC, lays out nine of the dozens of reported genetic mutations and deletions in the Omicron variant’s spike that the researchers suspect help the virus avoid antibodies.

The data is bound for submission as a peer-reviewed publication, but the rapid spread of Omicron around the world gives urgency to aggregating and sharing the findings while awaiting more data to assess the implications, says Rice University computer scientist Todd Treangen, principal investigator of the study who brought Godbold and his company onboard.

Treangen has long specialized in solving the computational challenges presented by the current deluge of medical data, with special focus on tracking pandemics.

Godbold says the project has allowed the team to aggregate a wealth of data being compiled about the virus.

“What we do is make sense of millions of SARS-CoV-2 genome sequences by combining literature citations and sequences in a way that makes it easy to interpret new viral variants soon after they are documented,” he says.

“These kinds of assessments could not be attempted without the hundreds of researchers around the world who have dedicated countless person-years to work on the virus to ascertain how the mutations function in both laboratory and clinical settings,” Godbold says.

While additional data is needed to assess the severity of COVID-19 cases from Omicron infection, Godbold writes that the variant is likely to make SARS-CoV-2 not only more transmissible but also “one that can evade neutralizing antibodies induced by vaccination better than previously seen variants.

“This is not to suggest that vaccination is likely to be defeated by the Omicron variant, only that the protection conferred by vaccination is likely to be shakier than with previous variants of concern,” he writes.

The finding is part of a project that began in July with the CDC’s grant to develop the Treangen lab’s Harvest Variants software for the integrated, collaborative variant tracking of SARS-CoV-2. Godbold and his colleagues at Signature Science were contracted to curate variants of the virus and test third-party software and documentation services.

Harvest software, introduced by Treangen in 2014, is intended to be a suite of open-source microbial core/genome alignment and visualization tools that enable real-time monitoring of viral mutations.

Treangen says the research team’s goal is to build informatics and computational tools that make rapid analysis possible.

“Since the SARS-CoV-2 virus will not stop mutating, our goal is to provide a community resource to rapidly identify, aggregate, and share high-quality data that complements related efforts taking place across the globe,” he says.

The Centers for Disease Control and Prevention funded the project.

Source: Rice University



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