Fecal calprotectin is a surrogate marker for endoscopic lesions in inflammatory bowel disease

Inflammatory Bowel Diseases
Geert D'HaensPaul Rutgeerts

Abstract

Fecal calprotectin is a marker of inflammation in inflammatory bowel disease (IBD). Since mucosal healing has become a goal of treatment in IBD we examined how reliably calprotectin levels reflect mucosal disease activity. In all, 126 IBD patients and 32 irritable bowel syndrome (IBS) patients needing colonoscopy delivered a sample of feces prior to the start of bowel cleansing. Besides collection of symptom scores and blood tests, experienced endoscopists recorded the Simple Endoscopic Score for Crohn's Disease (SES-CD) and the Crohn's Disease Endoscopic Index of Severity (CDEIS) in Crohn's disease (CD) patients and the Mayo endoscopic score in ulcerative colitis (UC) patients. Stool samples were shipped for central calprotectin PhiCal Assay (enzyme-linked immunosorbent assay [ELISA]). Correlation analysis was done with Pearson statistics. The median (interquartile range [IQR]) fecal calprotectin levels were 175 (44-938) μg/g in CD, 465 (61-1128) μg/g in UC, and 54 (16-139) μg/g in IBS. Correlations were significant with endoscopic disease scores in both CD and in UC. Using ROC statistics, a cutoff value of 250 μg/g indicated the presence of large ulcers with a sensitivity of 60.4% and a specificity of 79.5% (positive predicti...Continue Reading

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Citations

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