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Schniering, J. ; Maciukiewicz, M.* ; Gabryś, H.S.* ; Brunner, M.* ; Blüthgen, C.* ; Meier, C.* ; Braga-Lagache, S.* ; Uldry, A.C.* ; Heller, M.* ; Guckenberger, M.* ; Fretheim, H.* ; Nakas, C.T.* ; Hoffmann-Vold, A.M.* ; Distler, O.* ; Frauenfelder, T.* ; Tanadini-Lang, S.* ; Maurer, B.*

Computed tomography-based radiomics decodes prognostic and molecular differences in interstitial lung disease related to systemic sclerosis.

Eur. Respir. J. 59:2004503 (2021)

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BACKGROUND: Radiomic features calculated from routine medical images show great potential for personalized medicine in cancer. Patients with systemic sclerosis (SSc), a rare, multi-organ autoimmune disorder, have a similarly poor prognosis due to interstitial lung disease (ILD). OBJECTIVES: To explore computed tomography (CT)-based high-dimensional image analysis (radiomics) for disease characterisation, risk stratification, and relaying information on lung pathophysiology in SSc-ILD. METHODS: We investigated two independent, prospectively followed SSc-ILD cohorts (Zurich, derivation cohort, n=90; Oslo, validation cohort, n=66). For every subject, we defined 1'355 robust radiomic features from standard-of-care CT images. We performed unsupervised clustering to identify and characterize imaging-based patient clusters. A clinically applicable prognostic quantitative radiomic risk score (qRISSc) for progression-free survival was derived from radiomic profiles using supervised analysis. The biological basis of qRISSc was assessed in a cross-species approach by correlation with lung proteomics, histological and gene expression data derived from mice with bleomycin-induced lung fibrosis. RESULTS: Radiomic profiling identified two clinically and prognostically distinct SSc-ILD patient clusters. To evaluate the clinical applicability, we derived and externally validated a binary, quantitative radiomic risk score composed of 26 features, qRISSc, that accurately predicted progression-free survival and significantly improved upon clinical risk stratification parameters in multivariable Cox regression analyses in the pooled cohorts. A high qRISSc score, which identifies patients at risk for progression, was reverse translatable from human to experimental ILD and correlated with fibrotic pathway activation. CONCLUSIONS: Radiomics-based risk stratification using routine CT images provides complementary phenotypic, clinical and prognostic information significantly impacting clinical decision-making in SSc-ILD.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

ISSN (print) / ISBN 0903-1936

e-ISSN 1399-3003

Journal European Respiratory Journal

Quellenangaben Volume: 59, Issue: 5, Article Number: 2004503

Publisher European Respiratory Society

Publishing Place Sheffield

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Institute of Lung Health and Immunity (LHI)