Is sudden cardiac death predictable in LEOPARD syndrome?

Area of Science:

• Cardiology
• Genetics
• Medical Genetics

Background:

• LEOPARD syndrome is a rare genetic disorder with variable clinical manifestations.
• Hypertrophic cardiomyopathy is a significant cause of sudden cardiac death, particularly in young individuals.
• PTPN11 gene mutations are associated with several developmental disorders, including LEOPARD syndrome.

Observation:

• A young male with classic LEOPARD syndrome features experienced sudden cardiac death.
• The patient exhibited severe, non-obstructive hypertrophic cardiomyopathy.
• Genetic analysis revealed a mutation in the PTPN11 gene as the underlying cause.

Findings:

• The case demonstrates a direct link between PTPN11 gene mutation, LEOPARD syndrome, and fatal hypertrophic cardiomyopathy.
• This presentation highlights a severe phenotype within the spectrum of PTPN11-associated disorders.
• The findings underscore the potential for hypertrophic cardiomyopathy in syndromic contexts.

Implications:

• Prophylactic risk stratification may be crucial for patients with syndromic hypertrophic cardiomyopathy.
• Early identification and management of cardiac risks in LEOPARD syndrome patients are warranted.
• Further research into genotype-phenotype correlations of PTPN11 mutations is needed to refine clinical guidelines.