Guenther, Florian and Straub, Rainer H. and Hartung, Wolfgang and Fleck, Martin and Ehrenstein, Boris and Schminke, Louisa (2024) Association of Serum Soluble Transferrin Receptor Concentration With Markers of Inflammation: Analysis of 1001 Patients From a Tertiary Rheumatology Center. JOURNAL OF RHEUMATOLOGY, 51 (3). pp. 291-296. ISSN 0315-162X, 1499-2752
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Objective. Soluble transferrin receptor (sTfR) is considered to be a useful biomarker for the diagnosis of iron deficiency, especially in the setting of inflammation, as it is thought to not be affected by inflammation. We analyzed the relationship between sTfR levels and inflammatory markers in patients with known or suspected inflammatory rheumatic disease (IRD). Methods. Blood samples of 1001 patients with known or suspected IRD referred to a tertiary rheumatology center were analyzed. Study participants were classified as patients with active IRD and patients with inactive IRD or without IRD. Correlation analyses were used to explore the relationship between sTfR levels and inflammatory markers (ie, C-reactive protein [CRP], erythrocyte sedimentation rate [ESR]). We applied multiple linear regression analysis to evaluate the predictive value of CRP levels for sTfR concentrations after adjustment for potential confounding factors. Results. There were positive correlations between inflammatory markers (CRP, ESR) and serum sTfR levels (rho 0.44, rho 0.43, respectively; P < 0.001), exceeding the strength of correlation between inflammatory markers and the acute phase reactant ferritin (rho 0.30, rho 0.23, respectively; P < 0.001). Patients with active IRD demonstrated higher serum sTfR levels compared to patients with inactive or without IRD (mean 3.99 [SD 1.69] mg/L vs 3.31 [SD 1.57] mg/L; P < 0.001). After adjustment for potential confounding factors, CRP levels are predictive for serum sTfR concentrations (P < 0.001). Conclusion. The study provides evidence against the concept that sTfR is a biomarker not affected by inflammation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | BIOMARKERS REFLECTING INFLAMMATION; IRON-DEFICIENCY ANEMIA; TRANSCRIPTIONAL ACTIVATION; NUTRITIONAL DETERMINANTS; ARTHRITIS PATIENTS; DISEASE-ACTIVITY; BODY IRON; FERRITIN; HYPOXIA; PREVALENCE; biomarkers; inflammatory rheumatic disease; iron deficiency; sTfR |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Innere Medizin I |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Jan 2026 11:05 |
| Last Modified: | 22 Jan 2026 11:05 |
| URI: | https://pred.uni-regensburg.de/id/eprint/65254 |
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