Human leucocyte antigen in variant angina.

Area of Science:

• Immunogenetics
• Cardiology
• Human Genetics

Background:

• Variant angina is a condition involving coronary artery spasm.
• The underlying causes of variant angina are not fully understood.
• Genetic predisposition is a potential factor in its pathogenesis.

Purpose of the Study:

• To investigate the potential role of human leucocyte antigen (HLA) genes in the development of variant angina.
• To identify specific HLA alleles associated with an increased risk of coronary spasm.

Main Methods:

• Human leucocyte antigen (HLA) typing was performed on 45 patients diagnosed with variant angina.
• HLA allele frequencies in patients were compared to those of 152 healthy Japanese adults.
• Analysis included comparison between patients with normal and atherosclerotic coronary arteries.

Main Results:

• A significantly lower frequency of human leucocyte antigen (HLA) DQ omega 3 was observed in patients with variant angina compared to the control group.
• No significant differences in HLA antigen frequencies were found between patients with normal coronary arteries and those with atherosclerosis.

Conclusions:

• The findings suggest a potential genetic association between human leucocyte antigen (HLA) DQ omega 3 and the pathogenesis of variant angina.
• Specific genetic factors, possibly related to HLA alleles, may contribute to the susceptibility to coronary spasm.