T Cell Receptor Sequencing Identifies Prior SARS-CoV-2 Infection and Correlates With Neutralizing Antibodies and Disease Severity

Strategic Insights -

Researchers from the University of Washington have made a groundbreaking discovery in the study of COVID-19, revealing that T cell receptor sequencing can identify past SARS-CoV-2 infection and correlate with neutralizing antibodies and disease severity. The study, published in JCI Insight, used small-volume blood samples from 302 individuals recovered from COVID-19 to evaluate the sensitivity of T cell testing and compared it with serologic testing. The results showed that T cell testing identified SARS-CoV-2 infection in 68% of samples with undetectable neutralizing antibody titers.

Key Takeaways:

  • The study found that T cell receptor sequencing can identify past SARS-CoV-2 infection with high sensitivity, even in individuals with less severe disease.
  • The sensitivity of T cell testing was comparable to or greater than serology tests for identifying prior SARS-CoV-2 infection.
  • T cell testing identified SARS-CoV-2 infection in 68% of samples with undetectable neutralizing antibody titers.
  • The study concluded that T cell receptor sequencing can be a reliable measure of past SARS-CoV-2 infection with clinical value beyond serology.
  • The research supports the use of T cell testing as a scalable and reliable measure of past SARS-CoV-2 infection.

Statistics:

  • 302 individuals recovered from COVID-19 were used in the study.
  • T cell testing identified SARS-CoV-2 infection in 68% (55 of 81) of samples with undetectable neutralizing antibody titers.
  • The sensitivity of T cell testing was comparable to or greater than serology tests for identifying prior SARS-CoV-2 infection.
  • The study used small-volume blood samples, which made it possible to obtain high-fidelity data on T cell responses.
  • The data showed that T cell responses were significantly correlated with neutralizing antibody titers and clinical indicators of disease severity.

Sources:

  • T Cell Receptor Sequencing Identifies Prior Sars-cov-2 Infection and Correlates With Neutralizing Antibodies and Disease Severity. JCI Insight, 2022;7(10).
  • NewsRx. Researchers from University of Washington Describe Findings in COVID-19 (T Cell Receptor Sequencing Identifies Prior Sars-cov-2 Infection and Correlates With Neutralizing Antibodies and Disease Severity). Respiratory Therapeutics Week. June 27, 2022; p 665.