Abstract
Purpose
We investigated the role of fecal calprotectin (FC) and lactoferrin (FL) as predictive biomarkers in Clostridioides difficile infection (CDI).
Methods
We assembled a prospective cohort including all patients with a laboratory-confirmed CDI diagnosis between January and December 2017. FL and FC levels were measured at diagnosis by commercial ELISA and EIA kits. We investigated the diagnostic accuracy of FC and FL to predict CDI recurrence and severity (study outcomes) and explored optimal cut-off values in addition to those proposed by the manufacturers (200 µg/g and 7.2 µg/mL, respectively).
Results
We included 170 CDI cases (152 first episodes and 18 recurrences). The rates of recurrence (first episodes only) and severity (entire cohort) were 9.2% (14/152) and 46.5% (79/170). Both FL and FC levels were significantly higher in patients who developed study outcomes. Optimal cut-off values for FC and FL to predict CDI recurrence were 1052 µg/g and 6.0 µg/mL. The optimal cut-off value for FC yielded higher specificity (60.9%) and positive predictive value (PPV) (16.9%) than that proposed by the manufacturer. Regarding CDI severity, the optimal cut-off value for FC (439 µg/g) also provided higher specificity (43.9%) and PPV (54.1%) than that of the manufacturer, whereas the optimal cut-off value for FL (4.6 µg/mL) resulted in an improvement of PPV (57.5%).
Conclusion
By modifying the thresholds for assay positivity, the measurement of FC and FL at diagnosis is useful to predict recurrence and severity in CDI. Adding these biomarkers to current clinical scores may help to individualize CDI management.
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Data availability
The datasets generated and/or analyzed during the current study are available from the corresponding author on reasonable request.
Abbreviations
- aOR:
-
Adjusted odds ratio
- auROC:
-
Area under the receiver operator characteristic curve
- CCI:
-
Charlson comorbidity index
- CDI:
-
Clostridioides difficile Infection
- CI:
-
Confidence interval
- ED:
-
Emergency department
- EIA:
-
Enzyme immunoassay
- ELISA:
-
Enzyme-linked immunosorbent assay
- FDA:
-
Food and Drug Administration
- GDH:
-
Glutamate dehydrogenase
- HCFA:
-
Healthcare facility–associated
- IBD:
-
Inflammatory bowel disease
- IQR:
-
Interquartile range
- IV:
-
Intravenous
- NNAT:
-
Nucleic acid amplification testing
- NPV:
-
Negative predictive value
- PPI:
-
Proton-pump inhibitors
- PPV:
-
Positive predictive value
- SD:
-
Standard deviation
- SOT:
-
Solid organ transplantation
- WBC:
-
White blood cell count
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Funding
This study has been funded by an unrestricted grant from Merck Sharp & Dohme (MSD) and by Instituto de Salud Carlos III (ISCIII)—co-funded by the European Regional Development Fund / European Social Fund “A way to make Europe / Investing in your future”). M.F.R. holds a research contract “Miguel Servet” (CP18/00073) from the ISCIII, Spanish Ministry of Science and Innovation, also co-funded by the European Union. Funding sources had no involvement in the study design and conduction, data analysis, or manuscript preparation.
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M. Á. participated in the study concept and design, data collection, and manuscript writing, drafting, and reviewing. J. O. participated in the clinical management of patients, study concept and design, data collection, and manuscript editing and reviewing. I. R.-G., R. S. J., and F. L.-M. participated in the clinical management of patients and manuscript editing and reviewing. P. P., T. R.-M., N. R., and M. Á. O. participated in the laboratory procedures and manuscript editing and reviewing. J. M. A. participated in the study concept and design, and manuscript editing and reviewing. M. F.-R. participated in the study concept and design, data analysis and interpretation, and manuscript writing, editing, and reviewing. All authors have read and approved the submitted manuscript.
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The study protocol was submitted for evaluation and approved by the Ethics and Clinical Research Committee (CEIC) of the Research Institute Hospital “12 de Octubre” (i + 12). Informed consent was signed by all participants before inclusion in the study. All information related to the study was treated as strictly confidential in accordance with Organic Law 3/2018, of December 5, on Personal Data Protection and Guarantee of Digital Rights and the Biomedical Research Law 14/2007. The study was performed in accordance with the ethical principles set out in the latest version of the Helsinki
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Ágreda Fernández, M., Origüen, J., Rodriguez-Goncer, I. et al. Predictive value of fecal calprotectin and lactoferrin levels for negative outcomes in Clostridioides difficile infection. Eur J Clin Microbiol Infect Dis 43, 313–324 (2024). https://doi.org/10.1007/s10096-023-04729-z
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DOI: https://doi.org/10.1007/s10096-023-04729-z