Related Experiment Videos
[Immunogenetic study in hypertrophic cardiomyopathy]
P Gregor1, E Ivasková, H Sajdlová
12. interní klinika 3. lékarské fakulty Univerzity Karlovy, Praha.
Insights
Human Leukocyte Antigen (HLA) B21 is linked to a higher risk of severe hypertrophic cardiomyopathy, particularly obstructive forms and advanced myocardial hypertrophy. This finding aids in diagnosing atypical disease presentations.
Area of Science:
- Immunogenetics
- Cardiology
Context:
- Hypertrophic cardiomyopathy (HCM) is a complex genetic heart disease.
- Previous studies on Human Leukocyte Antigen (HLA) associations with HCM have yielded controversial results.
- A need exists for studies with larger patient cohorts and consideration of disease phenotypes.
Purpose:
- To investigate the association between specific HLA antigens and hypertrophic cardiomyopathy.
- To analyze HLA antigen prevalence across different functional and morphological forms of HCM.
Summary:
- This study assessed 60 HLA class 1 and 2 antigens in 117 HCM patients.
- A significantly higher prevalence of HLA-B21 was observed in patients with obstructive HCM and myocardial hypertrophy exceeding 30 mm.
- HLA antigen examination may assist in diagnosing atypical HCM cases.
Impact:
- Identifies HLA-B21 as a potential biomarker for increased risk of severe, early-onset hypertrophic cardiomyopathy.
- Highlights the utility of HLA antigen assessment in the comprehensive evaluation of specific HCM subtypes.
- Contributes to understanding the immunogenetic underpinnings of hypertrophic cardiomyopathy.
Abstract:
Results of assessment of HLA antigens in hypertrophic cardiomyopathies in the world literature are very controversial. Work dealing with this problem in sufficiently large groups of patients is lacking, i.e. work which takes into account different functional and morphological forms of the disease. The authors made therefore a detailed investigation of 60 class 1 and 2 antigens in 117 patients with this disease. Values of the relative risk and chi 2 test revealed a number of possible associations. After correction for the number of examined antigens a significantly higher prevalence was proved only in HLA-B21 in patients with the obstructive form and in patients with advanced myocardial hypertrophy (thickness of more than 30 mm). Examination of HLA antigens can have in the mentioned cases a certain importance during comprehensive examinations of not quite typical forms of the disease. Carriership of antigen B21 is associated with an increased risk of serious cardiological disease, manifested already in young age.