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Serum ECP as a diagnostic marker for asthma in children less than 5 years: A systematic review and meta-analysis
Mounika Polavarapu1, Hillary Klonoff-Cohen2
1School of Population Health, University of Toledo, Toledo, Ohio, USA.
Insights
Diagnosing asthma in young children is challenging. This study found insufficient evidence that serum eosinophilic cationic protein (sECP) effectively diagnoses asthma in children under five.
Area of Science:
- Pediatric Pulmonology
- Diagnostic Accuracy
- Biomarkers
Background:
- Asthma diagnosis in children under five lacks reliable clinical or laboratory markers.
- Standard lung function tests are not feasible in this age group.
Purpose of the Study:
- To evaluate the diagnostic efficacy of serum eosinophilic cationic protein (sECP) for asthma in children under five years of age.
Main Methods:
- A systematic review of PubMed, EMBASE, and Web of Science databases was conducted.
- Study quality was assessed using the QUADAS-2 scale.
- A meta-analysis of five studies was performed using RevMan 5.3.
Main Results:
- Eight studies were included in the systematic review; five in the meta-analysis.
- Pooled sensitivity was 0.79 (95% CI: 0.66-0.88) and pooled specificity was 0.79 (95% CI: 0.54-0.92).
- Pooled diagnostic odds ratio was 14.73 (95% CI: 3.58-60.58).
Conclusions:
- The current evidence is insufficient to support the use of sECP levels for diagnosing early childhood asthma.
- Further research is needed to establish reliable diagnostic tools for pediatric asthma.
Background:
Currently, there are no clear-cut clinical or laboratory parameters to diagnose asthma in young children. Spirometry or the lung function tests cannot be reliably measured in children less than 5 years. The purpose of this study is to evaluate the efficacy of serum eosinophilic cationic protein (sECP) in diagnosing asthma among children less than 5 years of age.
Methods:
A systematic review was performed in PubMed, EMBASE, and Web of Science databases to identify studies investigating the role of sECP in diagnosing childhood asthma. The quality of each study was assessed using quality assessment of diagnostic accuracy studies 2 scale. A meta-analysis was conducted using the RevMan 5.3 application.
Results:
A total of eight studies meeting the eligibility criteria were included in the systematic review and five studies in the meta-analysis. There was a degree of clinical heterogeneity between studies primarily related to the definition of asthma and the time of assessment of sECP levels. Pooled sensitivity was 0.79 (95% confidence interval [CI]: 0.66-0.88), pooled specificity was 0.79 (95% CI: 0.54-0.92), and the pooled diagnostic odds ratio was 14.73 (95% CI: 3.58-60.58).
Conclusion:
Overall, this review found insufficient evidence to support the role of sECP levels in diagnosing early childhood asthma.
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