期刊
INFLAMMATORY BOWEL DISEASES
卷 22, 期 9, 页码 2058-2062出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MIB.0000000000000872
关键词
Loeys-Dietz syndrome; very early-onset IBD; TGF beta receptor; pediatric; genetic predisposition; syndromes associated with IBD
资金
- NIH [T32 DK07632]
- George Ferry Young Investigator Development Award (North American Society for Pediatric Gastroenterology, Hepatology and Nutrition)
- NIH Mentored Research Development Award [1K08DK106463]
- NIH K23 Mentored Research Development Award [K23AI091869]
- ARTrust Faculty Development Award
- Johns Hopkins University Clinician Scientist Award
- Hopkins Conte Digestive Diseases Basic and Translational Research Core Grant
- National Marfan Foundation
- Howard Hughes Medical Institute
- Intramural Research Program of the NIH, NIAID
- Harvey M. and Lyn P. Meyerhoff Inflammatory Bowel Disease Center at The Johns Hopkins Hospital, Baltimore, USA
- Robert E. Sadler, Jr. Family
- USPHS [PO1DK046763]
- Cedars-Sinai F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute Research Funds
- Helmsley Charitable Trust
- European Union
- Crohn's and Colitis Foundation of America (CCFA)
- Joshua L. and Lisa Z. Greer Chair in IBD Genetics
- [DK062431]
- [DK062413]
- [DK046763-19]
- [AI067068]
- [HS021747]
Background: TGF beta is a multifunctional cytokine that is critical in regulating mucosal immunity. Murine studies have revealed that disruption of canonical TGF beta signaling leads to systemic inflammation including colitis. Loeys-Dietz syndrome (LDS) results from heterozygous mutations in the genes encoding the subunits of the TGF beta receptor. Methods: All patients with confirmed mutations in TGFBR1 or TGFBR2, seen in the Johns Hopkins Connective Tissue Disorders clinic, were asked to participate in the study. Ninety-three consecutive patients were enrolled, including 4 with inflammatory bowel disease (IBD). Using the Illumina Immunochip array, we undertook an exploratory analysis to evaluate the potential genetic risk factors that could predict which patients with LDS would develop IBD. Results: We report an increased prevalence of IBD in patients with LDS types I and II. We describe the course of several patients. In this small sample, the 3 whites with IBD had a genetic risk score in the top 6 highest scores of patients evaluated. Conclusion: We report a 10-fold increase in the prevalence of IBD in patients with LDS compared with the general population. Onset of disease in 3 of the 4 patients was at less than 18 years, and the clinical course in 2 of the 4 was severe with a poor response to traditional medications. Further evaluation of the genetic risk score is needed to determine whether it can predict which patients with LDS are most likely to develop IBD. This case series of patients with LDS with IBD suggests that defective TGF beta signaling may have an influence on IBD risk.
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