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Celiac Disease and Risk of Autoimmune Disorders: A Population-Based Matched Birth Cohort Study
Cristina Canova1, Gisella Pitter1, Jonas F Ludvigsson2
1Laboratory of Public Health and Population Studies, Department of Molecular Medicine, University of Padua, Padua, Italy.
Insights
Children with celiac disease (CD) face a higher risk of developing autoimmune hypothyroidism and type 1 diabetes mellitus (T1DM). Early surveillance is recommended for timely detection of these autoimmune comorbidities.
Area of Science:
- Pediatric Endocrinology
- Autoimmune Diseases
- Gastroenterology
Background:
- Celiac disease (CD) is an autoimmune disorder.
- Children with CD may have an increased risk of other autoimmune conditions.
- Type 1 diabetes mellitus (T1DM) and autoimmune thyroid disease are common comorbidities.
Purpose of the Study:
- To evaluate the relative risk of developing T1DM and autoimmune thyroid disease in children diagnosed with CD.
- To identify potential associations between CD and subsequent autoimmune conditions.
Main Methods:
- A matched cohort study design utilizing administrative data.
- Inclusion of 1215 CD cases and 6075 matched controls.
- Cox regression models to estimate hazard ratios for autoimmune diseases.
Main Results:
- Individuals with CD showed a significantly increased risk of hypothyroidism (HR 4.64).
- A trend towards increased risk for T1DM was observed (HR 2.50), though not statistically significant.
- Hypothyroidism risk was notably higher in males compared to females.
Conclusions:
- Children and adolescents with CD are at a heightened risk for autoimmune hypothyroidism and T1DM.
- Routine screening and surveillance for these comorbidities in pediatric CD patients are warranted.
- Timely detection can improve management and outcomes for associated autoimmune conditions.
Objectives:
To estimate the relative risk of developing type 1 diabetes mellitus (T1DM) and autoimmune thyroid disease in children with celiac disease (CD).
Study Design:
A matched cohort design with linkage of administrative data was adopted. A total of 1215 cases of CD and 6075 references matched by sex and year of birth born in Friuli Venezia Giulia Region (Italy) between 1989 and 2011 were included. Cox regression models were used to estimate hazard ratios (HRs) for autoimmune diseases in patients with CD compared with references, stratified by sex and age at diagnosis.
Results:
Individuals with CD had an increased risk of subsequent hypothyroidism (HR 4.64 [95% CI 2.88-7.46]) and T1DM (HR 2.50 [95% CI 0.94-6.66]), the latter not statistically significant. Risk of hypothyroidism was higher in males (HR 20.00; 95% CI 5.64-70.87) than females (HR 3.21; 95% CI 1.85-5.57) (P value <.01). No differences were observed between males and females risks for diabetes or age at CD diagnosis. The small number of hyperthyroidism cases identified precluded any statistical analysis.
Conclusions:
Children and youth with CD are at increased risk of developing autoimmune hypothyroidism and to some extent T1DM. This suggests the need for surveillance of children with CD in order to timely detect the onset of such comorbidities.
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