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Post-mortem genetic analysis in juvenile cases of sudden cardiac death

Background: The reason behind a sudden death of a young individual remains unknown in up to 50% of postmortem cases. Pathogenic mutations in genes encoding heart proteins are known to cause sudden cardiac death. Objective: The aim of our study was to ascertain whether genetic alterations could provide an explanation for sudden cardiac death in a juvenile cohort with no-conclusive cause of death after comprehensive autopsy. Methods: Twenty-nine cases <15 years showing no-conclusive cause of death after a complete autopsy were studied. Genetic analysis of 7 main genes associated with sudden cardiac death was performed using Sanger technology in low quality DNA cases, while in good quality cases the analysis of 55 genes associated with sudden cardiac death was performed using Next Generation Sequencing technology. Results: Thirty-five genetic variants were identified in 12 cases (41.37%). Ten genetic/variants in genes encoding cardiac ion channels were identified in 8 cases (27.58%). We also identified 9 cases (31.03%) carrying 25 genetic variants in genes encoding structural cardiac proteins. Nine cases carried more than one genetic variation, 5 of them combining structural and non-structural genes. Conclusions: Our study supports the inclusion of molecular autopsy in forensic routine protocols when no conclusive cause of death is identified. Around 40% of sudden cardiac death young cases carry a genetic variant that could provide an explanation for the cause of death. Because relatives could be at risk of sudden cardiac death, our data reinforce their need of clinical assessment and, if indicated, of genetic analysis

© Forensic Science International, 2014, vol. 245, p. 30-37

Elsevier

Author: Campuzano Larrea, Oscar
Sánchez Molero, Olallo
Allegue, Catarina
Coll, Monica
Mademont Soler, Irene
Selga Coma, Elisabet
Ferrer Costa, Carles
Matés Ramírez, Jesús
Iglesias, Anna
Sarquella Brugada, Georgia
Cesar, Sergi
Brugada Terradellas, Josep
Castellà, Josep
Medallo, Jordi
Brugada, Ramon
Date: 2014
Abstract: Background: The reason behind a sudden death of a young individual remains unknown in up to 50% of postmortem cases. Pathogenic mutations in genes encoding heart proteins are known to cause sudden cardiac death. Objective: The aim of our study was to ascertain whether genetic alterations could provide an explanation for sudden cardiac death in a juvenile cohort with no-conclusive cause of death after comprehensive autopsy. Methods: Twenty-nine cases <15 years showing no-conclusive cause of death after a complete autopsy were studied. Genetic analysis of 7 main genes associated with sudden cardiac death was performed using Sanger technology in low quality DNA cases, while in good quality cases the analysis of 55 genes associated with sudden cardiac death was performed using Next Generation Sequencing technology. Results: Thirty-five genetic variants were identified in 12 cases (41.37%). Ten genetic/variants in genes encoding cardiac ion channels were identified in 8 cases (27.58%). We also identified 9 cases (31.03%) carrying 25 genetic variants in genes encoding structural cardiac proteins. Nine cases carried more than one genetic variation, 5 of them combining structural and non-structural genes. Conclusions: Our study supports the inclusion of molecular autopsy in forensic routine protocols when no conclusive cause of death is identified. Around 40% of sudden cardiac death young cases carry a genetic variant that could provide an explanation for the cause of death. Because relatives could be at risk of sudden cardiac death, our data reinforce their need of clinical assessment and, if indicated, of genetic analysis
Format: application/pdf
ISSN: 0379-0738
Document access: http://hdl.handle.net/10256/10123
Language: eng
Publisher: Elsevier
Collection: Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.forsciint.2014.10.004
Articles publicats (D-CM)
Is part of: © Forensic Science International, 2014, vol. 245, p. 30-37
Rights: Tots els drets reservats
Subject: Mort sobtada
Sudden death
Cor -- Malalties
Heart -- Diseases
Title: Post-mortem genetic analysis in juvenile cases of sudden cardiac death
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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