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[Celiac disease and HLA in a hospital population of Uruguay]
Insights
This study investigated human leukocyte antigen (HLA) associations with childhood celiac disease. While HLA-B8 is often linked, this research found a significant association only with HLA-A29 in pediatric celiac disease patients.
Area of Science:
- Immunogenetics
- Gastroenterology
- Pediatric Autoimmune Diseases
Context:
- The association between Human Leukocyte Antigen (HLA) antigens and celiac disease is well-established, particularly HLA-B8.
- Previous studies reported varying incidences of HLA-B7 and HLA-B12 in celiac disease patients.
- Understanding these genetic markers is crucial for diagnosing and managing celiac disease, especially in pediatric populations.
Purpose:
- To investigate the association of specific HLA-A and HLA-B locus antigens with celiac disease in a cohort of unrelated pediatric patients.
- To evaluate the frequency of HLA antigens, including HLA-B8, HLA-B7, and HLA-B12, in relation to celiac disease.
- To determine if HLA-A29 shows a statistically significant association with celiac disease in the studied population.
Summary:
- A study examined twelve HLA-A and thirteen HLA-B antigens in 19 unrelated pediatric celiac disease patients and 64 controls using the NIH Microlymphocytotoxicity Technique.
- Statistical analysis using relative risk and chi-squared (X2) tests was performed to assess antigen associations.
- A statistically significant increase in the frequency of HLA-A29 was observed in celiac disease patients, while the expected associations with HLA-B8 and HLA-B12 were not found, and HLA-B7 was absent.
Impact:
- This research identifies HLA-A29 as a potentially significant genetic marker for celiac disease in children.
- The findings challenge previous associations with HLA-B8 and suggest a need for further investigation into HLA-A29's role.
- Further studies with larger cohorts are required to confirm the association of HLA-A29 with celiac disease and its clinical implications.
Abstract:
Since the description of the association of HLA-B8 antigen with celiac disease, it has been confirmed by many authors. The incidence of HLA-B8 antigen is higher in adults and children when it is compared to apparently healthy controls. Some authors found a reduction on the incidence of HLA-B7 antigen and others suggested that a higher incidence of HLA-B12 antigen in patients HLA-B8 antigen negative, is associated with celiac disease. We studied 19 unrelated patients with celiac disease and 64 controls. Their ages range from 18 months to 18 years old, onset of the disease was during childhood. We determined twelve antigens of the HLA-A locus and thirteen antigens of the HLA-B locus. We used the NIH Microlymphocytotoxicity Technique. The degree of association was computed by the relative risk and the results were statistically evaluated by the X2. The statistically significant increase in frequency was shown only for HLA-A29 The results did not show neither the higher incidence for HLA-B8 found by other authors, nor the higher incidence for HLA-B12; however HLA-B7 was not detected in our patients. The final decision on the association of HLA-A29 antigen with celiac disease in our population will require examination of a broader panel of probands.