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Multicenter Study
. 2022 May;28(5):723-730.
doi: 10.1016/j.cmi.2021.10.019. Epub 2021 Nov 10.

A host signature based on TRAIL, IP-10, and CRP for reducing antibiotic overuse in children by differentiating bacterial from viral infections: a prospective, multicentre cohort study

Cihan Papan  1 , Alberto Argentiero  2 , Marian Porwoll  3 , Ummaya Hakim  3 , Edoardo Farinelli  2 , Ilaria Testa  2 , Maria Bruna Pasticci  2 , Daniele Mezzetti  2 , Katia Perruccio  2 , Liat Etshtein  4 , Niv Mastboim  4 , Einat Moscoviz  4 , Tahel Ilan Ber  4 , Asi Cohen  4 , Einav Simon  4 , Olga Boico  4 , Liran Shani  4 , Tanya M Gottlieb  4 , Roy Navon  4 , Eran Barash  4 , Kfir Oved  4 , Eran Eden  4 , Arne Simon  5 , Johannes G Liese  6 , Markus Knuf  7 , Michal Stein  8 , Renata Yacobov  8 , Ellen Bamberger  9 , Sven Schneider  10 , Susanna Esposito  11 , Tobias Tenenbaum  12
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Free article
Multicenter Study

A host signature based on TRAIL, IP-10, and CRP for reducing antibiotic overuse in children by differentiating bacterial from viral infections: a prospective, multicentre cohort study

Cihan Papan et al. Clin Microbiol Infect. 2022 May.
Free article

Abstract

Objectives: Identifying infection aetiology is essential for appropriate antibiotic use. Previous studies have shown that a host-protein signature consisting of TNF-related apoptosis-induced ligand (TRAIL), interferon-γ-induced protein-10 (IP-10), and C-reactive protein (CRP) can accurately differentiate bacterial from viral infections.

Methods: This prospective, multicentre cohort study, entitled AutoPilot-Dx, aimed to validate signature performance and to estimate its potential impact on antibiotic use across a broad paediatric population (>90 days to 18 years) with respiratory tract infections, or fever without source, at emergency departments and wards in Italy and Germany. Infection aetiology was adjudicated by experts based on clinical and laboratory investigations, including multiplex PCR and follow-up data.

Results: In total, 1140 patients were recruited (February 2017-December 2018), of which 1008 met the eligibility criteria (mean age 3.5 years, 41.9% female). Viral and bacterial infections were adjudicated for 628 (85.8%) and 104 (14.2%) children, respectively; 276 patients were assigned an indeterminate reference standard outcome. For the 732 children with reference standard aetiology, the signature discriminated bacterial from viral infections with a sensitivity of 93.7% (95%CI 88.7-98.7), a specificity of 94.2% (92.2-96.1), positive predictive value of 73.0% (65.0-81.0), and negative predictive value of 98.9% (98.0-99.8); in 9.8% the test results were equivocal. The signature performed consistently across different patient subgroups and detected bacterial immune responses in viral PCR-positive patients.

Conclusions: The findings validate the high diagnostic performance of the TRAIL/IP-10/CRP signature in a broad paediatric cohort, and support its potential to reduce antibiotic overuse in children with viral infections.

Keywords: Bacterial infection; CRP; Host-protein signature; IP-10; TRAIL.

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