ArticleJournal of cystic fibrosis : official journal of the European Cystic Fibrosis Society2021
Circulating CRP and calprotectin to diagnose CF pulmonary exacerbations.
Article in Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 19 citations in OpenAlex.
- Trial
- C-reactive protein (CRP) as a biomarker of pulmonary exacerbation presentation and treatment response.Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society · 2022Trial
- The association of fecal calprotectin and respiratory exacerbation in cystic fibrosis patients.BMC gastroenterology · 2022Article
- Acute Pulmonary Exacerbation Phenotypes in Patients with Cystic Fibrosis.Annals of the American Thoracic Society · 2022Article
- A year in review: Real world evidence, functional monitoring and emerging therapeutics in 2021.Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society · 2022Review
- Investigation of respiratory rate in patients with cystic fibrosis using a minimal-impact biomotion system.BMC pulmonary medicine · 2022Article
- Intestinal Inflammation and Alterations in the Gut Microbiota in Cystic Fibrosis: A Review of the Current Evidence, Pathophysiology and Future Directions.Journal of clinical medicine · 2022Review
- Observational
- Calprotectin in Lung Diseases.International journal of molecular sciences · 2021Review
- Evaluating assumptions of definition-based pulmonary exacerbation endpoints in cystic fibrosis clinical trials.Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society · 2021Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cystic fibrosis (CF) pulmonary exacerbations (PEx) remain underdiagnosed by CF clinicians. Serum C-reactive protein (CRP) and calprotectin are inflammatory biomarkers that have the potential to aid in the diagnosis of PEx. 19 subjects (56 stable, 46 PEx visits) from a longitudinal study were included and the diagnostic performance of absolute and fold-change CRP and calprotectin cut-offs to discriminate stable and PEx visits was assessed. Based on Youden's index, optimal absolute and fold-change thresholds to identify PEx were 9.5 mg/L (Sn 76%, Sp 73%; AUC 0.76) and 2.2-fold (Sn 50%, Sp 96%; AUC 0.78) for CRP and 8.1 mg/L (Sn 61%, Sp 79%; AUC 0.72) and 1.3-fold (Sn 57%, Sp 88%; AUC 0.74) for calprotectin. A step-wise algorithm was able to improve diagnostic performance (Sn 80%; Sp 88%). CRP and calprotectin could discriminate stable vs. PEx visits with good performance and appear promising as diagnostic biomarkers but further validation studies are required prior to implementing these diagnostic thresholds.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.