Research Tracker›Biomarker Atlas›Long COVID›ECM remodeling proteins

ECM remodeling proteins in Long COVID

In Long COVID (PASC, Post-Acute Sequelae of COVID-19), the direction of change for ECM remodeling proteins, also described as MMPs, TIMPs, collagen fragments, is inconsistent across studies that used healthy controls as the reference group. Clinically, it has been associated with tissue remodeling. The finding is drawn from Baalbaki et al. 2025; it describes group-level differences, not a threshold that classifies an individual.

↕ InconsistentProteomic

Summary

Direction in Long COVID↕ Inconsistent — reported as both higher and lower across studies, with no consistent direction
CategoryProteomic
Also described asMMPs, TIMPs, collagen fragments
Compared againstHC (healthy controls)
Associated symptomsTissue remodeling
Test typeBlood test (serum / plasma / whole blood)
SourceBaalbaki et al. 2025 — doi:10.1111/all.16526
Condition atlasLong COVID Biomarker Atlas

Related Proteomic markers in Long COVID

Full list: Long COVID Biomarker Atlas.

Frequently asked questions

Is ECM remodeling proteins high or low in Long COVID?

Mixed. Some studies report higher and others lower ECM remodeling proteins in Long COVID compared with healthy controls, so no single direction is established. Source: Baalbaki et al. 2025.

What symptoms is ECM remodeling proteins associated with in Long COVID?

The cited literature associates this marker with Tissue remodeling. These are population-level associations and do not mean the marker causes the symptoms.

Which test measures ECM remodeling proteins?

It is measured as a blood test (serum / plasma / whole blood). Many of the cited studies used research-grade assays, so clinical availability may vary.

Is one abnormal ECM remodeling proteins result diagnostic of Long COVID?

No. No single biomarker is diagnostic of Long COVID. ECM remodeling proteins findings come from group comparisons, overlap considerably between patients and controls, and vary with study design, timing and comparison group. A result should be interpreted by a clinician alongside symptoms, history and other tests.

Cite this page

Open Source Medicine Foundation. (2026). ECM remodeling proteins in Long COVID: direction, evidence and what it means. OSMF Research Tracker. Retrieved October 7, 2026, from https://research.opensourcemed.info/biomarkers/long-covid/ecm-remodeling-proteins.html
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Last reviewed: 2026-06-29 · Page generated from long-covid.json · Browse: Long COVID atlas · Biomarker Index · All marker pages

Disclaimer: This page is an educational synthesis of published, peer-reviewed research and is not medical advice. Biomarker findings vary across studies with case definitions, comparison groups, timing and assay methods. Direction of change reflects the predominant finding in the cited source and does not establish a diagnostic threshold. Discuss any test result with a qualified clinician.