Genetically determined height and coronary artery disease

Area of Science:

• Genetics and Cardiovascular Science

Background:

• The inverse association between adult height and coronary artery disease (CAD) risk lacks clear mechanistic understanding.
• Investigating the genetic underpinnings of height can elucidate its relationship with CAD risk.

Purpose of the Study:

• To genetically investigate the association between adult height and the risk of coronary artery disease (CAD).
• To identify potential biological mechanisms linking genetically determined height to CAD risk.

Main Methods:

• Utilized a large-scale genetic approach with 180 height-associated genetic variants.
• Assessed the association between genetically determined height (1 SD change) and CAD risk in over 190,000 individuals (65,066 cases, 128,383 controls).
• Examined associations with cardiovascular risk factors and performed pathway analysis on height-associated genes.

Main Results:

• A 1-SD decrease in genetically determined height was associated with a 13.5% increase in CAD risk.
• A graded inverse relationship was observed: more height-raising variants correlated with reduced CAD risk.
• Genetically determined height was significantly associated with low-density lipoprotein cholesterol and triglyceride levels, explaining ~30% of the association. Overlapping pathways related to development and atherosclerosis were identified.

Conclusions:

• Genetically determined shorter height is primarily associated with increased CAD risk.
• This link is partly mediated by adverse lipid profiles (cholesterol, triglycerides) in shorter individuals.
• Shared biological pathways influencing both height and atherosclerosis development likely contribute to the observed association.