Medycyna pracy · 2025
[Medical transition in the assessment of work ability].
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Chang Denis, Wong Madison, Camila Cardenas Maria, Stahl Marisa G, Liu Edwin, Caplan Mayan, Gidrewicz Dominica, King James A, Turner Justine M, Leonard Maureen M, Lee Dale, Cristina Pacheco M, Dickerson Jane, Raber Catherine, Badalyan Vahe, Chugh Ankur, Setty Mala, Baek Clara, Singh Arunjot, Fahey Lisa, Walsh Catharine M, Silvester Jocelyn A, Absah Imad
Аннотация
BACKGROUND AND OBJECTIVES: Recent changes in European diagnostic criteria allow for serologic diagnosis of celiac disease in children. Those guidelines have not been adopted in North America; hence, we aim to assess the positive predictive value (PPV) of tissue transglutaminase (tTG) immunoglobulin A (IgA) assays used in North America in identifying histologic findings of celiac disease.
METHODS: Multicenter retrospective cohort study of children (<18 years) with an elevated tTG IgA within 6 months of an esophagogastroduodenoscopy between January 2016 and December 2021. Biopsy-confirmed celiac disease was determined by the presence of intraepithelial lymphocytosis and villous atrophy. The primary outcomes were the PPV of an elevated tTG IgA and tTG IgA greater than or equal to 10 times the upper limit of normal (10× ULN).
RESULTS: Overall, 4019 children (63.3% female; 9% type 1 diabetes, 2% Down syndrome) were included. Histologic findings were consistent with celiac disease for 3321 children (PPV = 82.6% [95% CI, 81.4-83.8]). Among the 1739/4019 (43.2%) children with tTG IgA greater than or equal to 10× ULN, 1651 had biopsy-confirmed celiac disease (PPV10× = 94.9% [95% CI, 93.8-95.9]). Five percent (88/1739) of children did not have histologic findings of celiac disease, including 41/1739 (2%) with normal histology. Diagnostic accuracy of tTG IgA varied widely among assays used in North America (PPV range: 71.5%-88.8%; PPV10× range: 89.3%-97.3%). Assays performed worse in children with type 1 diabetes (PPV10× 89% [95% CI, 83.5-92.8]).
CONCLUSIONS: Elevated tTG IgA in isolation is insufficient to confidently diagnose celiac disease. As tTG assay performance varied widely, diagnostic confirmation by a specialist prior to dietary changes is essential.
METHODS: Multicenter retrospective cohort study of children (<18 years) with an elevated tTG IgA within 6 months of an esophagogastroduodenoscopy between January 2016 and December 2021. Biopsy-confirmed celiac disease was determined by the presence of intraepithelial lymphocytosis and villous atrophy. The primary outcomes were the PPV of an elevated tTG IgA and tTG IgA greater than or equal to 10 times the upper limit of normal (10× ULN).
RESULTS: Overall, 4019 children (63.3% female; 9% type 1 diabetes, 2% Down syndrome) were included. Histologic findings were consistent with celiac disease for 3321 children (PPV = 82.6% [95% CI, 81.4-83.8]). Among the 1739/4019 (43.2%) children with tTG IgA greater than or equal to 10× ULN, 1651 had biopsy-confirmed celiac disease (PPV10× = 94.9% [95% CI, 93.8-95.9]). Five percent (88/1739) of children did not have histologic findings of celiac disease, including 41/1739 (2%) with normal histology. Diagnostic accuracy of tTG IgA varied widely among assays used in North America (PPV range: 71.5%-88.8%; PPV10× range: 89.3%-97.3%). Assays performed worse in children with type 1 diabetes (PPV10× 89% [95% CI, 83.5-92.8]).
CONCLUSIONS: Elevated tTG IgA in isolation is insufficient to confidently diagnose celiac disease. As tTG assay performance varied widely, diagnostic confirmation by a specialist prior to dietary changes is essential.