Role of anti-transglutaminase (anti-tTG), anti-gliadin, and anti-endomysium serum antibodies in diagnosing celiac disease: a comparison of four different commercial kits for anti-tTG determination

Journal of Clinical Laboratory Analysis
D BassoM Plebani

Abstract

The aims of this study were: (1) to compare the diagnostic efficacy for celiac disease (CD) diagnosis of serum determination of anti-gliadin (AG) (IgA and IgG) and anti-endomysium (AE) with that of anti-transglutaminase (AtTG); and (2) to compare the accuracy of four different assays to measure AtTG. We studied 72 children: the histological diagnosis of CD was made in 38 cases and excluded in the remaining 34 children. In fasting sera we measured AE, AG-IgA and IgG, and AtTG, the latter with four different commercial kits (Eurospital, Medipan, Inova, Arnika). Moreover AtTG was measured in a group of 58 CD children after a gluten-free diet. AE was positive in all but 1 case of CD patients (sensitivity = 97%); false positive results were found in 1/34 controls (specificity = 97%). When a specificity of 95% was fixed, the sensitivities were 97% for AE, 83% for AG-IgA, and 63% for AG-IgG; the sensitivities of anti-tTG were 90, 84, 84, and 75% when measured with Eurospital, Medipan, Inova, and Arnika kits respectively. The new AtTG seems to be accurate enough to be proposed as a noninvasive diagnostic tool for CD diagnosis; the 4 kits analyzed showed similar diagnostic efficacy.

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Citations

Jan 8, 2004·Journal of Autoimmunity·Ken NakachiBernard Rees Smith
Feb 10, 2006·Clinical and Vaccine Immunology : CVI·Elias Zintzaras, Anastasios E Germenis
Jul 9, 2002·Journal of Clinical Pathology·R C W WongS Adelstein
Oct 16, 2004·Internal Medicine Journal·G E M Reeves
Sep 10, 2003·Pathology·Richard C W WongStephen Adelstein
Oct 19, 2002·The American Journal of Gastroenterology·Raanan ShamirRami Eliakim
May 10, 2001·Journal of Clinical Laboratory Analysis·R A McPherson
Nov 30, 2006·Journal of Pediatric Gastroenterology and Nutrition·Daniela BassoMario Plebani
Nov 24, 2004·Journal of Immunoassay & Immunochemistry·Efthalia E YiannakiAnastasios E Germenis
Nov 6, 2010·The Journal of Pediatrics·Elke E Fröhlich-ReitererUNKNOWN Diabetes Patienten Verlaufsdokumentationssystem-Wiss Study Group

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