An immune dysfunction score for stratification of patients with acute infection based on whole-blood gene expression

Eddie Cano-Gamez, Katie L. Burnham, Cyndi Goh, Alice Allcock, Zunaira H. Malick, Lauren Overend, Andrew Kwok, David A. Smith, Hessel Peters-Sengers, David Antclife, Stuart McKechnie, Brendon P. Scicluna, Tom van der Poll, Anthony C. Gordon, Charles J. Hinds, Emma E. Davenport*, Julian C. Knight* (Corresponding Author), Nigel Webster, Helen Galley, Jane TaylorSally Hall, Jenni Addison, Sian Roughton, Heather Tennant, Achyut Guleri, Natalia Waddington, Dilshan Arawwawala, John Durcan, Alasdair Short, Karen Swan, Sarah Williams, Susan Smolen, Christine Mitchell-Inwang, Tony Gordon, Emily Errington, Maie Templeton, Pyda Venatesh, Geraldine Ward, Marie McCauley, Simon Baudouin, Charley Higham, Jasmeet Soar, Sally Grier, Elaine Hall, Stephen Brett, David Kitson, Robert Wilson, Laura Mountford, Juan Moreno, Peter Hall, GAinS Investigators

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Dysregulated host responses to infection can lead to organ dysfunction and sepsis, causing millions of global deaths each year. To alleviate this burden, improved prognostication and biomarkers of response are urgently needed. We investigated the use of whole-blood transcriptomics for stratification of patients with severe infection by integrating data from 3149 samples from patients with sepsis due to community-acquired pneumonia or fecal peritonitis admitted to intensive care and healthy individuals into a gene expression reference map. We used this map to derive a quantitative sepsis response signature (SRSq) score reflective of immune dysfunction and predictive of clinical outcomes, which can be estimated using a 7- or 12-gene signature. Last, we built a machine learning framework, SepstratifieR, to deploy SRSq in adult and pediatric bacterial and viral sepsis, H1N1 influenza, and COVID-19, demonstrating clinically relevant stratification across diseases and revealing some of the physiological alterations linking immune dysregulation to mortality. Our method enables early identification of individuals with dysfunctional immune profiles, bringing us closer to precision medicine in infection.

Original languageEnglish
Article numbereabq4433
Number of pages36
JournalScience translational medicine
Volume14
Issue number669
Early online date2 Nov 2022
DOIs
Publication statusPublished - 2 Nov 2022

Bibliographical note

Funding Information:
This work was funded in whole, or in part, by the Medical Research Council (MR/V002503/1) (J.C.K. and E.E.D.); Wellcome Trust Investigator Award (204969/Z/16/Z) (J.C.K.); Wellcome Trust core funding to the Wellcome Sanger Institute (grant numbers 206194 and 108413/A/15/D); Wellcome Trust grants (090532/Z/09/Z and 203141/Z/16/Z) to core facilities; Wellcome Centre for Human Genetics; Chinese Academy of Medical Sciences (CAMS) Innovation Fund for Medical Science (CIFMS), China (grant number: 2018-I2M-2-002); and National Institute for Health and Care Research (NIHR) Oxford Biomedical Research Centre (J.C.K.). A.C.G. is supported by an NIHR Research Professor award (RP-2015-06-018) and the NIHR Imperial Biomedical Research Center.

We thank all the patients, patient families, nurses, and clinicians who participated in the GAinS and MARS studies; and the COMBAT Consortium, MOSAIC Consortium, and DeCOI.

Data Availability Statement

Codes are available at https://doi.org/10.5281/zenodo.7079357. The SepstratifieR package can be installed directly from GitHub and is available at Zenodo (https://doi.org/10.5281/zenodo.7079384). Gene expression data for GAinS study samples are publicly available in ArrayExpress (E-MTAB-4421, E-MTAB-4451, E-MTAB-5273, and E-MTAB-5274). Accession numbers for all public datasets used are listed in Table S1. This research was funded in whole or in part by The Wellcome Trust [Grant numbers 204969/Z/16/Z, 206194, 108413/A/15/D, 090532/Z/09/Z and 203141/Z/16/Z], a cOAlition S organization. The author will make the Author Accepted Manuscript (AAM) version available under a CC BY public copyright license.

Keywords

  • Adult
  • Humans
  • Child
  • Influenza A Virus, H1N1 Subtype
  • Gene Expression Profiling
  • COVID-19
  • Sepsis/genetics
  • Transcriptome/genetics

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