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The molecular autopsy: should the evaluation continue after the funeral?
David J Tester1, Michael J Ackerman
1Division of Cardiovascular Diseases, Department of Medicine, Windland Smith Rice Sudden Death Genomics Laboratory, Mayo Clinic, Guggenheim 501, Rochester, MN, USA.
Pediatric Cardiology
|February 7, 2012
Summary
Sudden cardiac death in young individuals often remains unexplained after autopsy. Further cardiologic and genetic evaluations can identify inherited heart conditions and at-risk family members.
Area of Science:
- Cardiology
- Genetics
- Forensic Pathology
Background:
- Sudden cardiac death (SCD) is a leading cause of mortality in developed nations.
- A significant proportion of SCDs in individuals under 35 are unexplained by autopsy findings.
- Autopsy-negative sudden unexplained death (SUD) poses diagnostic challenges for medical examiners.
Purpose of the Study:
- To investigate the causes of unexplained sudden deaths in young individuals.
- To highlight the role of cardiac channelopathies in autopsy-negative SUD.
- To emphasize the importance of family evaluations and molecular autopsy in identifying at-risk individuals.
Main Methods:
- Review of epidemiologic studies on sudden death in young populations.
- Discussion of cardiac channelopathies (LQTS, CPVT, BrS) as causes of SCD.
- Exploration of cardiologic, genetic, and molecular autopsy approaches for autopsy-negative SUD.
Main Results:
- Cardiac channelopathies are frequently implicated in SUD with structurally normal hearts.
- Autopsies often fail to reveal the underlying cause of death in these cases.
- Family evaluations and molecular autopsy can identify genetic substrates for lethal arrhythmias.
Conclusions:
- Autopsy-negative SUD in young individuals warrants further investigation beyond traditional postmortem examination.
- Early identification of channelopathies through genetic and cardiologic assessment is crucial for preventing future cardiac events in affected families.
- Molecular autopsy and family screening are vital tools for understanding and managing inherited cardiac conditions leading to sudden death.
