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- W2944424224 abstract "Background: Seronegative celiac disease (CD) poses a diagnostic challenge.Aims: Characterize and identify differences between seronegative and seropositive CD.Patients and methods: Retrospective cohort study examining adult patients diagnosed with CD (1980–2017). Clinical, analytical, histological, genetic and immunophenotypic data were compiled. Seronegative CD was defined as a anti-tissue transglutaminase type 2 IgA and endomysial antibodies (EMA) negative and HLA-DQ2 and/or DQ8 positive, showing clinical signs of CD plus an abnormal duodenal biopsy, and responding to a gluten-free diet (GFD). Factors associated with seronegative CD were identified through binomial logistic regression.Results: Of 315 CD patients, 289 were seropositive (91.7%) and 26 seronegative (8.3%). Among the seronegative patients, higher prevalence was observed for autoimmune thyroiditis (26.9% vs. 9.7%, p = .016), HLA-DQ8 heterozygosity (23.1% vs. 2.5%, p ˂ .001) and Marsh I lesion (34.6% vs. 3.7%, p ˂ .001). The two groups showed similar flow cytometry-determined duodenal immunophenotypes and rates of refractory CD.Conclusions: Seronegative CD differs mostly in genetic (more HLA-DQ8) and histologic (milder atrophy) features as compared with seropositive. Intestinal intraepithelial immunophenotype by flow cytometry, similar in both modalities, is a useful tool to diagnose seronegative CD." @default.
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- W2944424224 date "2019-05-04" @default.
- W2944424224 modified "2023-09-26" @default.
- W2944424224 title "Genetic and flow cytometry analysis of seronegative celiac disease: a cohort study" @default.
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- W2944424224 doi "https://doi.org/10.1080/00365521.2019.1608466" @default.
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