Cited by 72Interstitial Lung Diseases and Idiopathic Pulmonary FibrosisOccupational and environmental lung diseasesChronic Obstructive Pulmonary Disease (COPD) Research

Proteomic Biomarkers of Survival in Idiopathic Pulmonary Fibrosis

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Oldham, Justin M., Huang, Yong, Bose, Swaraj, Ma, Shwu-Fan, Kim, John S., Schwab, Alexandra, Ting, Christopher, Mou, Kaniz +13 more·2024·American Journal of Respiratory and Critical Care Medicine

Abstract

Rationale: Idiopathic pulmonary fibrosis (IPF) causes progressive lung scarring and high mortality. Reliable and accurate prognostic biomarkers are urgently needed. Objectives: To identify and validate circulating protein biomarkers of IPF survival. Methods: High-throughput proteomic data were generated using prospectively collected plasma samples from patients with IPF from the Pulmonary Fibrosis Foundation Patient Registry (discovery cohort) and the Universities of California, Davis; Chicago; and Virginia (validation cohort). Proteins associated with three-year transplant-free survival (TFS) were identified using multivariable Cox proportional hazards regression. Those associated with TFS after adjustment for false discovery in the discovery cohort were advanced for testing in the validation cohort, with proteins maintaining TFS association with consistent effect direction considered validated. After combining cohorts, functional analyses were performed, and machine learning was used to derive a proteomic signature of TFS. Measurements and Main Results: Of 2,921 proteins tested in the discovery cohort (n = 871), 231 were associated with differential TFS. Of these, 140 maintained TFS association with consistent effect direction in the validation cohort (n = 355). After cohorts were combined, the validated proteins with the strongest TFS association were latent-transforming growth factor β-binding protein 2 (hazard ratio [HR], 2.43; 95% confidence interval [CI] = 2.09–2.82), collagen α-1(XXIV) chain (HR, 2.21; 95% CI = 1.86–2.39), and keratin 19 (HR, 1.60; 95% CI = 1.47–1.74). In decision curve analysis, a proteomic signature of TFS outperformed a similarly derived clinical prediction model. Conclusions: In the largest proteomic investigation of IPF outcomes performed to date, we identified and validated 140 protein biomarkers of TFS. These results shed important light on potential drivers of IPF progression.

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Crossref · 10.1164/rccm.202301-0117oc

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  • Abundance at week 12 of proteins previously reported to be associated with lung function and transplant-free survival in patients with IPF, such as ADAMTSL2, COL6A3, CCN3, COL24A1, KRT19, and LTBP2, were associated with change in FVC.

    “We further found that the abundance at week 12 of proteins previously reported to be associated with lung function38 and transplant-free survival39 in patients with IPF, such as ADAMTSL2, COL6A3, CCN3, COL24A1, KRT19 and LTBP2, were associated change in FVC”
  • MMP10, LTBP2, KRT19, and COL24A1 have been nominated as biomarkers for IPF and transplant-free survival.

    “MMP1047, LTBP239,48,49, KRT1939 and COL24A139 have been nominated as biomarkers for IPF and transplant-free survival”

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Authors
Oldham, J. M., Huang, Y., Bose, S., Ma, S.-F., Kim, J. S., Schwab, A., Ting, C., Mou, K., Lee, C. T., Adegunsoye, A., Ghodrati, S., Pugashetti, J. V., Nazemi, N., Strek, M. E., Linderholm, A. L., Chen, C.-H., Murray, S., Zemans, R. L., Flaherty, K. R., Martinez, F. J., & Noth, I.
Affiliations
  • University of Michigan (US)
  • University of Virginia (US)
  • University of Chicago (US)
  • University of California, Davis (US)
  • Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine
  • Weill Cornell Medical Center, New York, New York
Venue
American Journal of Respiratory and Critical Care Medicine
Published
2024-05-01
Volume
209
Issue
9
Pages
1111-1120
ISSN
  • 1073-449X (ISSN-L)
  • 1535-4970
OpenAlex
W4387701231
Cited by
72
References
53
Citations by year
2026: 24 · 2025: 28 · 2024: 19 · 2023: 1
FWCI
13.20
Type
journal article
Language
en
Open access
Locations
  • American Journal of Respiratory and Critical Care Medicine (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Heart, Lung, and Blood Institute (K23HL150301, K23HL146942, T32HL007605, T32HL007749, R35HL160770, RO1HL130796, UG3HL145266)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Occupational and environmental lung diseases
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Chronic Obstructive Pulmonary Disease (COPD) Research
Keywords
idiopathic pulmonary fibrosis, prognostic factors, survival, plasma proteomics, circulating proteins, transplant-free survival, LTBP2, keratin 19, proteomic signatures, disease progression
MeSH terms
Aged, Female, Humans, Male, Middle Aged, Prognosis, Prospective Studies, Cohort Studies, Biomarkers, Proportional Hazards Models, Proteomics, Idiopathic Pulmonary Fibrosis

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