Genome Wide Meta-Analysis identifies common genetic signatures shared by heart function and Alzheimer's disease

Area of Science:

• Genetics
• Cardiology
• Neuroscience

Background:

• Echocardiography is crucial for assessing heart function and monitoring cardiac diseases.
• Previous research identified genetic factors influencing echocardiographic measures.
• Apoptotic genes' role in heart development in experimental models suggested investigating their human cardiac function association.

Purpose of the Study:

• To investigate the association between apoptotic gene variants and echocardiographic traits in humans.
• To identify novel genetic markers related to cardiac function.
• To explore the link between apoptotic genes, cardiac function, and Alzheimer's disease.

Main Methods:

• Utilized genome-wide data from public repositories.
• Performed rigorous quality control and imputation of genetic data.
• Conducted a meta-analysis of individual association study results.

Main Results:

• Confirmed the association of caspases and other apoptosis-related genes with cardiac phenotypes.
• Enrichment analysis revealed an over-representation of genes linked to Alzheimer's disease, including apoptotic regulators.
• Genetic correlation analyses supported the novel link between cardiac function and cognitive decline.

Conclusions:

• Apoptotic gene variants are associated with echocardiographic indicators of heart function.
• A potential genetic link exists between heart function in healthy individuals and later-life cognitive decline.
• Findings may inform preventative strategies for Alzheimer's disease.