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[Premature sudden death--consider serious familial heart rhythm disturbances]

Pieter G Postema1, Imke Christiaans, Marielle Alders

  • 1Academisch Medisch Centrum, Afd. Cardiologie, Hartfaal Centrum, Amsterdam, the Netherlands.

Nederlands Tijdschrift Voor Geneeskunde
|October 4, 2011
PubMed

Insights

A unique familial sudden death syndrome causes premature cardiac arrest in 50% of affected relatives before age 60. Genetic analysis identifies at-risk individuals for this DPP6-gene related condition.

Area of Science:

  • Cardiovascular Genetics
  • Molecular Cardiology
  • Genetic Epidemiology

Background:

  • Sudden cardiac arrest (SCA) can be familial, suggesting a genetic basis.
  • Identifying specific genetic causes for familial SCA is crucial for risk stratification.
  • A unique familial sudden death syndrome has been observed in the Netherlands.

Observation:

  • Three patients presented with a history of premature deaths due to SCA in their families.
  • Affected family members experienced SCA before 60 years of age, with roughly 50% prevalence.
  • No distinct clinical signs or symptoms were observed in affected individuals apart from SCA.

Findings:

  • Genetic analysis is the primary method for identifying individuals at risk.
  • Lethal DNA alterations, potentially involving the DPP6-gene, are presumed to cause the syndrome.
  • The condition presents as a unique familial sudden death syndrome.

Implications:

  • Referral to a cardiogenetics outpatient clinic is recommended for SCA survivors and relatives of affected individuals.
  • Early identification enables timely and appropriate medical interventions.
  • Implantable cardioverter-defibrillators (ICDs) may be indicated for affected individuals.

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