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Abstract Title:

Risk of celiac disease autoimmunity and timing of gluten introduction in the diet of infants at increased risk of disease.

Abstract Source:

JAMA. 2005 May 18;293(19):2343-51. PMID: 15900004

Abstract Author(s):

Jill M Norris, Katherine Barriga, Edward J Hoffenberg, Iman Taki, Dongmei Miao, Joel E Haas, Lisa M Emery, Ronald J Sokol, Henry A Erlich, George S Eisenbarth, Marian Rewers

Article Affiliation:

Department of Preventive Medicine and Biometrics, University of Colorado at Denver and Health Sciences Center, Denver, CO 80262, USA. jill.norris@uchsc.edu

Abstract:

CONTEXT: While gluten ingestion is responsible for the signs and symptoms of celiac disease, it is not known what factors are associated with initial appearance of the disease. OBJECTIVE: To examine whether the timing of gluten exposure in the infant diet was associated with the development of celiac disease autoimmunity (CDA). DESIGN, SETTING, AND PATIENTS: Prospective observational study conducted in Denver, Colo, from 1994-2004 of 1560 children at increased risk for celiac disease or type 1 diabetes, as defined by possession of either HLA-DR3 or DR4 alleles, or having a first-degree relative with type 1 diabetes. The mean follow-up was 4.8 years. MAIN OUTCOME MEASURE: Risk of CDA defined as being positive for tissue transglutaminase (tTG) autoantibody on 2 or more consecutive visits or being positive for tTG once and having a positive small bowel biopsy for celiac disease, by timing of introduction of gluten-containing foods into the diet. RESULTS: Fifty-one children developed CDA. Findings adjusted for HLA-DR3 status indicated that children exposed to foods containing wheat, barley, or rye (gluten-containing foods) in the first 3 months of life (3 [6%] CDA positive vs 40 [3%] CDA negative) had a 5-fold increased risk of CDA compared with children exposed to gluten-containing foods at 4 to 6 months (12 [23%] CDA positive vs 574 [38%] CDA negative) (hazard ratio [HR], 5.17; 95% confidence interval [CI], 1.44-18.57). Children not exposed to gluten until the seventh month or later (36 [71%] CDA positive vs 895 [59%] CDA negative) had a marginally increased risk of CDA compared with those exposed at 4 to 6 months (HR, 1.87; 95% CI, 0.97-3.60). After restricting our case group to only the 25 CDA-positive children who had biopsy-diagnosed celiac disease, initial exposure to wheat, barley, or rye in the first 3 months (3 [12%] CDA positive vs 40 [3%] CDA negative) or in the seventh month or later (19 [76%] CDA positive vs 912 [59%] CDA negative) significantly increased risk of CDA compared with exposure at 4 to 6 months (3 [12%] CDA positive vs 583 [38%] CDA negative) (HR, 22.97; 95% CI, 4.55-115.93; P = .001; and HR, 3.98; 95% CI, 1.18-13.46; P = .04, respectively). CONCLUSION: Timing of introduction of gluten into the infant diet is associated with the appearance of CDA in children at increased risk for the disease.

Study Type : Human Study

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