The yield of risk stratification for sudden cardiac death in hypertrophic cardiomyopathy myosin-binding protein C...

Area of Science:

• Cardiology
• Genetics
• Preventive Medicine

Background:

• Hypertrophic cardiomyopathy (HCM) is a genetic heart condition.
• MYBPC3 gene mutations are a common cause of HCM.
• Predictive genetic testing allows early identification of mutation carriers.

Purpose of the Study:

• To assess the prevalence of HCM and sudden cardiac death (SCD) risk factors in asymptomatic MYBPC3 mutation carriers.
• To evaluate the clinical findings at the first cardiological assessment post-genetic testing.
• To determine the long-term implications of MYBPC3 mutations.

Main Methods:

• Cardiological evaluation of 235 asymptomatic MYBPC3 mutation carriers.
• Assessment for clinical diagnosis of HCM.
• Identification of risk factors for SCD.

Main Results:

• HCM was diagnosed in 53 carriers (22.6%).
• Disease penetrance was incomplete and varied by sex, with men more frequently affected.
• 11% of carriers with HCM and risk factors were identified as potentially at risk for SCD.

Conclusions:

• A significant proportion of asymptomatic carriers develop HCM.
• Risk factors for SCD are common in these individuals.
• Regular cardiological monitoring is crucial for MYBPC3 mutation carriers throughout their lives.