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Forensic Sci Int. 2014 Sep;242:9-15. doi: 10.1016/j.forsciint.2014.06.007. Epub 2014 Jun 13.

The role of clinical, genetic and segregation evaluation in sudden infant death.

Author information

  • 1Cardiovascular Genetics Center, University of Girona-IdIBGi, Girona, Spain. Electronic address: oscar@brugada.org.
  • 2Cardiovascular Genetics Center, University of Girona-IdIBGi, Girona, Spain.
  • 3Arrhythmias Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain.
  • 4Gendiag SL, Barcelona, Spain.

Abstract

Sudden infant death syndrome (SIDS) is the leading cause of death in the first year of life. Several arrhythmogenic genes have been associated with cardiac pathologies leading to infant sudden cardiac death (SCD). Our aim was to take advantage of next generation sequencing (NGS) technology to perform a thorough genetic analysis of a SIDS case. A SIDS case was referred to our institution after negative autopsy. We performed a genetic analysis of 104 SCD-related genes using a custom panel. Confirmed variants in index case were also analyzed in relatives. Clinical evaluation of first-degree family members was performed. Relatives did not show pathology. NGS identified seven variants. Two previously described as pathogenic. Four previously catalogued without clinical significance. The seventh variation was novel. Familial segregation showed that the index case's mother carried all same genetic variations except one, which was inherited from the father. The sister of the index case carried three variants. We believe that molecular autopsy should be included in current forensic protocols after negative autopsy. In addition to NGS technologies, familial genetic testing should be also performed to clarify potential pathogenic role of new variants and to identify genetic carriers at risk of SCD.

Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

KEYWORDS:

Custom panel; Genetics; Molecular autopsy; Next generation sequencing; SIDS

PMID:
25016126
[PubMed - in process]
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