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 language | English |
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Article number | eabq4433 |
Number of pages | 36 |
Journal | Science translational medicine |
Volume | 14 |
Issue number | 669 |
Early online date | 2 Nov 2022 |
DOIs | |
Publication status | Published - 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