MYBPC3 Haplotype Linked to Hypertrophic Cardiomyopathy in Rhesus Macaques (Macaca mulatta)

Robert F Oldt1, Kimberly J Bussey2, Matthew L Settles3

  • 1School of Mathematical and Natural Sciences, Arizona State University at the West Campus, Glendale, Arizona; Evolutionary Biology Graduate Program, School of Life Sciences, Arizona State University at the West Campus, Glendale, Arizona;,

Comparative Medicine
|August 6, 2020
PubMed

Insights

Researchers identified a genetic risk factor for hypertrophic cardiomyopathy (HCM) in rhesus macaques. A specific MYBPC3 gene variant strongly associates with left ventricular hypertrophy (LVH), offering insights into this inherited heart condition.

Area of Science:

  • Genomics
  • Cardiovascular Research
  • Comparative Medicine

Background:

  • Hypertrophic cardiomyopathy (HCM) is an inherited heart condition causing left ventricular hypertrophy (LVH) and sudden cardiac death.
  • Genetic factors contribute to HCM susceptibility, but current genetic testing identifies causal mutations in only half of human cases.
  • Rhesus macaques with LVH serve as a valuable model for studying HCM's genomic basis.

Purpose of the Study:

  • To investigate the genetic underpinnings of severe HCM and sudden cardiac death in rhesus macaques.
  • To identify genetic variants associated with left ventricular hypertrophy (LVH) in this animal model.
  • To explore the utility of evolutionary genomic data in complex disease studies.

Main Methods:

  • A next-generation genotyping assay targeting 7 sarcomeric rhesus genes was employed.
  • Amplicon sequencing was performed on 52 macaques with confirmed LVH and 42 unaffected controls.
  • Bias-reduced logistic regression was used to analyze genetic associations with LVH.

Main Results:

  • A risk haplotype in the rhesus MYBPC3 gene was identified.
  • This haplotype, containing an intronic variant, showed a strong association with LVH in homozygous or carrier forms.
  • The MYBPC3 gene is frequently disrupted in human and feline HCM, suggesting conserved mechanisms.

Conclusions:

  • The study identified a specific MYBPC3 gene variant associated with hypertrophic cardiomyopathy (HCM) in rhesus macaques.
  • Leveraging evolutionary genomic data is a practical strategy to minimize population bias in complex disease research.
  • This finding provides a comparative genetic model for understanding HCM and sudden cardiac death risk.

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