4.3 Article

Real-life utility and diagnostic accuracy of a home-performed fecal calprotectin test to predict endoscopic activity in patients with inflammatory bowel disease under maintenance treatment with adalimumab

Journal

EUROPEAN JOURNAL OF GASTROENTEROLOGY & HEPATOLOGY
Volume 33, Issue -, Pages E777-E782

Publisher

LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MEG.0000000000002248

Keywords

biomarkers; Crohn's disease; endoscopy; self-monitoring; ulcerative colitis

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The home-performed fecal calprotectin (FC) test has high compliance rates and performs better than other biomarkers in predicting endoscopic disease activity in IBD patients under maintenance treatment with adalimumab.
Aims The home-performed fecal calprotectin (FC) test has been proposed for the remote management of inflammatory bowel disease (IBD) patients. We present our real-world experience on the use of FC home testing in IBD patients under maintenance treatment with adalimumab. Methods Consecutive IBD patients on maintenance treatment with adalimumab were studied retrospectively on the basis of prospectively recorded data. FC calprotectin home test (IBDoc,.uhlmann Laboratories AG, Schonenbuch, Switzerland) was analyzed alongside sufficient information on baseline characteristics, follow-up data and treatment modifications, as well as serum biomarkers and endoscopic assessment data on the basis of validated endoscopic scores. Results From a total of 72 IBD patients under maintenance treatment with adalimumab, 65 (90%) showed compliance with performing the home FC test. FC values were significantly higher in patients who finally needed treatment modification (37%) compared with those who were maintained on stable treatment (63%) (761 mu g/g [537-1000] vs. 108 [41-335], P < 0.0001). In the logistic regression analysis FC and erythrocyte sedimentation rate (ESR) were independently correlated with endoscopically active disease (odds ratio: 1.003; 95% confidence interval, 1.001-1.006, P < 0.01 and odds ratio: 1.058; 95% confidence interval, 1.013-1.105, P < 0.05). FC identified patients with endoscopically active disease more effectively than other biomarkers with an area under the receiver operating characteristic curve of 0.78. FC levels >413 mu g/g had a sensitivity of 75% and a specificity of 76% in predicting active disease in endoscopy. Conclusions These first real-life results indicate that in IBD patients under maintenance treatment with adalimumab FC home test is a valuable tool with high compliance rates that performs better than the other biomarkers in predicting disease endoscopic activity. Copyright (C) 2021 Wolters Kluwer Health, Inc. All rights reserved.

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