ArticleFrontiers in immunology2023
KL-6 levels in the connective tissue disease population: typical values and potential confounders-a retrospective, real-world study.
Article in Frontiers in immunology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.
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Who cites it
14 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.
- Serum KL-6 and the mortality of patients with connective tissue disease-associated interstitial lung disease: A meta-analysis.Biomolecules & biomedicine · 2024Pooled it
- Association of Serum KL-6 with Functional Impairment in Patients with Immune-Mediated Interstitial Lung Disease.Medicina (Kaunas, Lithuania) · 2026Article
- Serum CA125 is independently associated with adverse outcomes in primary Sjögren's syndrome-associated interstitial lung disease: a prospective multicenter cohort study.Respiratory research · 2026Observational
- Spectrum of autoantibodies and other serological parameters in connective tissue disease-associated interstitial lung disease patients.Frontiers in medicine · 2026Article
- Toxicity of BEP chemotherapy in germ cell tumors: focus on immune-mediated bleomycin pulmonary toxicity in comparison with EP and VIP regimens.Frontiers in immunology · 2026Review
- Analytical validation of capillary blood Krebs von den Lungen-6 measurement using a high- sensitivity chemiluminescent immunoassay in pediatric patients.Frontiers in medicine · 2026Article
- Correlation of a combined serum biomarker panel with the composite physiologic index in connective tissue disease-associated interstitial lung disease.Frontiers in physiology · 2026Article
- Treating connective tissue disease-associated interstitial lung disease - think outside the box: a perspective.European respiratory review : an official journal of the European Respiratory Society · 2025Review
- Serum KL-6 and SP-D: Markers of Lung Function in Autoimmune-Related Interstitial Lung Diseases.International journal of molecular sciences · 2025Article
- Serum concentrations of Krebs von den Lungen-6 as prognostic biomarker in patients with silicosis.Frontiers in medicine · 2025Article
- A Practical Multidisciplinary Approach to Identifying Interstitial Lung Disease in Systemic Autoimmune Rheumatic Diseases: A Clinician's Narrative Review.Diagnostics (Basel, Switzerland) · 2024Review
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- The prevalence and unique clinical features of CPFE among patients with connective tissue disease-associated interstitial lung disease: a retrospective, real-world study.Therapeutic advances in respiratory diseaseArticle
Corrections and comments
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Krebs von den Lungen 6 (KL-6) is a potential biomarker for determining the severity of interstitial lung disease (ILD) in patients with connective tissue disease (CTD). Whether KL-6 levels can be affected by potential confounders such as underlying CTD patterns, patient-associated demographics, and comorbidities needs further investigation. Methods: From the database created by Xiangya Hospital, 524 patients with CTD, with or without ILD, were recruited for this retrospective analysis. Recorded data included demographic information, comorbidities, inflammatory biomarkers, autoimmune antibodies, and the KL-6 level at admission. Results of CT and pulmonary function tests were collected one week before or after KL-6 measurements. The percent of predicted diffusing capacity of the lung for carbon monoxide (DLCO%) and computed tomography (CT) scans were used to determine the severity of ILD. Results: Univariate linear regression analysis showed that BMI, lung cancer, TB, lung infections, underlying CTD type, white blood cell (WBC) counts, neutrophil (Neu) counts, and hemoglobin (Hb) were related to KL-6 levels. Multiple linear regression confirmed that Hb and lung infections could affect KL-6 levels independently; the β were 9.64 and 315.93, and the P values were 0.015 and 0.039, respectively. CTD-ILD patients had higher levels of KL-6 (864.9 vs 463.9, Conclusion: KL-6 is a potential biomarker for gauging the incidence and severity of ILD in CTD patients. To use this typical value of KL-6, however, doctors should take Hb and the presence of lung infections into account.
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