Abstract
Background
Children with active inflammatory bowel disease (IBD) are frequently underweight. Anti-tumor necrosis factor (anti-TNF) agents may induce remission and restore growth. However, its use in other autoimmune diseases has been associated with excess weight gain. Our aim was to examine whether children with IBD could experience excess weight gain.
Methods
A centralized diagnostic index identified pediatric IBD patients evaluated at our institution who received anti-TNF therapy for at least 1 year between August 1998 and December 2013. Anthropometric data were collected at time of anti-TNF initiation and annually. Excess weight gain was defined as ΔBMI SDS (standard deviation score) where patients were (1) reclassified from “normal” to “overweight/obese,” (2) “overweight” to “obese,” or (2) a final BMI SDS >0 and ΔSDS >0.5.
Results
During the study period, 268 children received anti-TNF therapy. Of these, 69 had sufficient follow-up for a median of 29.3 months. Median age at first anti-TNF dose was 12.8 years. At baseline, mean weight SDS was −0.7 (SD 1.4), while mean BMI SDS was −0.6 (1.3). Using baseline BMI SDS, 11.6% were overweight/obese. At last follow-up (LFU), however, the mean ΔBMI SDS was 0.50 (p < 0.0001). However, 10 (17%) patients had excess weight gain at LFU; 3 patients were reclassified from “normal” to “obese,” and 7 had a final BMI SDS >0 and ΔSDS >0.5.
Conclusions
Pediatric patients with IBD may experience excess weight gain when treated with anti-TNF agents. Monitoring for this side effect is warranted.
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Abbreviations
- IBD:
-
Inflammatory bowel disease
- Anti-TNF:
-
Anti-tumor necrosis factor
- BMI:
-
Body mass index
- LFU:
-
Last follow-up
- SDS:
-
Standard deviation score
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Acknowledgments
The authors thank Kevin Chevalier for assisting in statistical analysis.
Author’s contribution
LH contributed to the acquisition and analysis of data, and writing of the manuscript. RC contributed to the design, data acquisition, and writing of the manuscript. BM contributed to the statistical analysis and interpretation of data. FE contributed to the design, analysis, and interpretation of data. SK contributed to the conception and design, interpretation of data, and writing of the manuscript. JT contributed to the conception and design, analysis and interpretation of data, and writing of the manuscript. All the authors have approved the final version for publication and agree to be accountable for this work.
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Haas, L., Chevalier, R., Major, B.T. et al. Biologic Agents Are Associated with Excessive Weight Gain in Children with Inflammatory Bowel Disease. Dig Dis Sci 62, 3110–3116 (2017). https://doi.org/10.1007/s10620-017-4745-1
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DOI: https://doi.org/10.1007/s10620-017-4745-1