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  • Title: Five year time course of celiac disease serology during gluten free diet: results of a community based "CD-Watch" program.
    Author: Zanini B, Lanzarotto F, Mora A, Bertolazzi S, Turini D, Cesana B, Donato F, Ricci C, Lonati F, Vassallo F, Scarcella C, Lanzini A.
    Journal: Dig Liver Dis; 2010 Dec; 42(12):865-70. PubMed ID: 20598661.
    Abstract:
    BACKGROUND: Little information is available on the effect of a follow-up strategy in celiac disease patients during gluten-free diet. AIMS: To assess 5 year time course of t-transglutaminase antibodies (t-TG) in celiac disease patients enrolled in a community based follow-up program. METHODS: Annual t-TG testing and periodical clinic visit in 2245 patients. RESULTS: Proportion of patients with negative t-TG progressively increased from 83% to 93% during the 5-year follow-up: poor adherence to gluten-free diet (HR 4.764), long duration of gluten-free diet (HR 0.929) and female gender (HR 1.472) were independently associated with serological outcome. In individual patients, 69% tested t-TG "persistently negative", 1% "persistently positive" and 30% "intermittently negative or positive". By applying mathematical modelling to t-TG conversion rates observed in this latter group at beginning and end of the follow-up program, the predicted proportion of t-TG negative population increased from 90% to 95% over 5 years. CONCLUSIONS: Time-course of t-TG serology in the community fluctuates in 1/3 of celiac disease patients suggesting inconstant adherence to gluten-free diet and need of follow-up strategy. Periodical serological and clinical follow-up is a viable and efficacious strategy to promote adherence to gluten-free diet as inferred from time-course of t-TG serology.
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