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Dig Dis Sci. 2012 Jan;57(1):127-32. doi: 10.1007/s10620-011-1857-x. Epub 2011 Aug 17.

Celiac disease screening assays for children younger than 3 years of age: the performance of three serological tests.

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1
Institute of Gastroenterology, Nutrition, and Liver Disease, Schneider Children's Medical Center of Israel, 14 Kaplan St, 49202 Petach Tikva, Israel.

Abstract

BACKGROUND AND AIMS:

The optimum serological test for celiac disease (CD) in young children is not known. The objective of our study was to compare the performance of three serological tests (IgA + IgG DGP, IgA TTG, and IgA + IgG EMA) for children younger than 3 years of age.

METHODS:

We identified all subjects younger than 3 years of age (n = 6,074) that were tested for CD serology and included those with biopsy data. Patients were classified as group 1 (n = 47): patients with confirmed CD or group 2 (n = 12): patients with normal biopsy findings.

RESULTS:

There was statistically significant difference between group 1 and group 2 with regard to number of patients with positive IgA TTG (97.87% vs. 50%, P < 0.001), IgA + IgG DGP (100% vs. 77.78%, P = 0.007), and IgA + IgG EMA (95.65% vs. 9.09%, P < 0.001). There was a significantly positive correlation between Marsh-Oberhuber score on the small duodenal biopsies and all tests. Analysis of sensitivity and specificity showed that manufacturer's levels had high sensitivity for all tests (IgA TTG 97%, IgA + IgG DGP 100%, IgA + IgG EMA 96%), however specificity was low for IgA + IgG DGP (44%) and IgA TTG (50%) but not for IgA + IgG EMA (91%).

CONCLUSIONS:

For children younger than 3 years of age, IgA + IgG EMA is highly sensitive and specific. Use of IgA + IgG DGP or IgA TTG as a single serological marker is insufficient for definite diagnosis of CD in this age group. Based on our results, it might be reasonable to postpone the biopsy for asymptomatic children with negative EMA.

PMID:
21847565
DOI:
10.1007/s10620-011-1857-x
[Indexed for MEDLINE]

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