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Kwok SY, Ho S, Shih FY, Yeung PK, Cheng SSW, Poon WM, Lo IFM, Luk HM. Molecular autopsy in Chinese sudden cardiac death in the young. Am J Med Genet A 2024:e63797. [PMID: 38958565 DOI: 10.1002/ajmg.a.63797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 06/07/2024] [Accepted: 06/12/2024] [Indexed: 07/04/2024]
Abstract
Inherited cardiovascular conditions are significant causes of sudden cardiac death in the young (SCDY), making their investigation using molecular autopsy and prevention a public health priority. However, the molecular autopsy data in Chinese population is lacking. The 5-year result (2017-2021) of molecular autopsy services provided for victims of SCDY (age 1-40 years) was reviewed. The outcome of family cascade genetic screening and clinical evaluation was reviewed. A literature review of case series reporting results of molecular autopsy on SCDY in 2016-2023 was conducted. Among the 41 decedents, 11 were found to carry 13 sudden cardiac death (SCD)-causative genetic variants. Likely pathogenic (LP) variants were identified in the DSP, TPM1, TTN, and SCN5A genes. Cascade genetic testing identified four family members with LP variants. One family member with familial TPM1 variant was found to have hypertrophic cardiomyopathy upon clinical evaluation. This study provided insight into the genetic profile of molecular autopsy in a Chinese cohort of SCDY. The detection of important SCD-causative variants through molecular autopsy has facilitated family cascade screening by targeted genetic testing and clinical evaluation of at-risk family members. A literature review of the current landscape of molecular autopsy in the investigation of SCDY was conducted.
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Affiliation(s)
- Sit-Yee Kwok
- Department of Paediatrics and Adolescent Medicine, Hong Kong Children's Hospital, Kowloon, Hong Kong SAR
| | - Stephanie Ho
- Clinical Genetics Service Unit, Hong Kong Children's Hospital, Kowloon, Hong Kong SAR
| | - Fong-Ying Shih
- Clinical Genetics Service Unit, Hong Kong Children's Hospital, Kowloon, Hong Kong SAR
| | - Pak-Kwan Yeung
- Department of Health, Forensic Pathology Service, Kowloon, Hong Kong SAR
| | - Shirley S W Cheng
- Clinical Genetics Service Unit, Hong Kong Children's Hospital, Kowloon, Hong Kong SAR
| | - Wai-Ming Poon
- Department of Health, Forensic Pathology Service, Kowloon, Hong Kong SAR
| | - Ivan F M Lo
- Clinical Genetics Service Unit, Hong Kong Children's Hospital, Kowloon, Hong Kong SAR
| | - Ho-Ming Luk
- Clinical Genetics Service Unit, Hong Kong Children's Hospital, Kowloon, Hong Kong SAR
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2
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Bard AM, Clark LV, Cosgun E, Aldinger KA, Timms A, Quina LA, Ferres JML, Jardine D, Haas EA, Becker TM, Pagan CM, Santani A, Martinez D, Barua S, McNutt Z, Nesbitt A, Mitchell EA, Ramirez JM. Known pathogenic gene variants and new candidates detected in sudden unexpected infant death using whole genome sequencing. Am J Med Genet A 2024:e63596. [PMID: 38895864 DOI: 10.1002/ajmg.a.63596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/13/2024] [Accepted: 03/08/2024] [Indexed: 06/21/2024]
Abstract
The purpose of this study is to gain insights into potential genetic factors contributing to the infant's vulnerability to Sudden Unexpected Infant Death (SUID). Whole Genome Sequencing (WGS) was performed on 144 infants that succumbed to SUID, and 573 healthy adults. Variants were filtered by gnomAD allele frequencies and predictions of functional consequences. Variants of interest were identified in 88 genes, in 64.6% of our cohort. Seventy-three of these have been previously associated with SIDS/SUID/SUDP. Forty-three can be characterized as cardiac genes and are related to cardiomyopathies, arrhythmias, and other conditions. Variants in 22 genes were associated with neurologic functions. Variants were also found in 13 genes reported to be pathogenic for various systemic disorders and in two genes associated with immunological function. Variants in eight genes are implicated in the response to hypoxia and the regulation of reactive oxygen species (ROS) and have not been previously described in SIDS/SUID/SUDP. Seventy-two infants met the triple risk hypothesis criteria. Our study confirms and further expands the list of genetic variants associated with SUID. The abundance of genes associated with heart disease and the discovery of variants associated with the redox metabolism have important mechanistic implications for the pathophysiology of SUID.
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Affiliation(s)
- Angela M Bard
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA
| | - Lindsay V Clark
- Bioinformatics and Research Scientific Computing, Seattle Children's Research Institute, Seattle, Washington, USA
| | - Erdal Cosgun
- Bioinformatics and Research Scientific Computing, Seattle Children's Research Institute, Seattle, Washington, USA
- AI for Good Research Lab, Microsoft, Redmond, Washington, USA
- Microsoft Genomics Team, Redmond, Washington, USA
| | - Kimberly A Aldinger
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA
- Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Neurology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Andrew Timms
- Bioinformatics and Research Scientific Computing, Seattle Children's Research Institute, Seattle, Washington, USA
- Center for Developmental Biology and Regenerative Medicine, Seattle Children's Research Institute, Seattle, Washington, USA
| | - Lely A Quina
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA
| | - Juan M Lavista Ferres
- Bioinformatics and Research Scientific Computing, Seattle Children's Research Institute, Seattle, Washington, USA
- AI for Good Research Lab, Microsoft, Redmond, Washington, USA
- Microsoft Genomics Team, Redmond, Washington, USA
| | - David Jardine
- Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA
| | - Elisabeth A Haas
- Department of Research, Rady Children's Hospital-San Diego, San Diego, California, USA
| | - Tatiana M Becker
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA
| | - Chelsea M Pagan
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA
| | | | | | | | | | | | - Edwin A Mitchell
- Department of Paediatrics, University of Auckland, Auckland, New Zealand
| | - Jan-Marino Ramirez
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, Washington, USA
- Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA
- Department of Neurological Surgery, University of Washington School of Medicine, Seattle, Washington, USA
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3
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Lynge TH, Albert CM, Basso C, Garcia R, Krahn AD, Semsarian C, Sheppard MN, Behr ER, Tfelt-Hansen J. Autopsy of all young sudden death cases is important to increase survival in family members left behind. Europace 2024; 26:euae128. [PMID: 38715537 PMCID: PMC11164113 DOI: 10.1093/europace/euae128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 04/29/2024] [Indexed: 06/11/2024] Open
Abstract
Sudden cardiac death (SCD) is an important public health problem worldwide, accounting for an estimated 6-20% of total mortality. A significant proportion of SCD is caused by inherited heart disease, especially among the young. An autopsy is crucial to establish a diagnosis of inherited heart disease, allowing for subsequent identification of family members who require cardiac evaluation. Autopsy of cases of unexplained sudden death in the young is recommended by both the European Society of Cardiology and the American Heart Association. Overall autopsy rates, however, have been declining in many countries across the globe, and there is a lack of skilled trained pathologists able to carry out full autopsies. Recent studies show that not all cases of sudden death in the young are autopsied, likely due to financial, administrative, and organizational limitations as well as awareness among police, legal authorities, and physicians. Consequently, diagnoses of inherited heart disease are likely missed, along with the opportunity for treatment and prevention among surviving relatives. This article reviews the evidence for the role of autopsy in sudden death, how the cardiologist should interpret the autopsy-record, and how this can be integrated and implemented in clinical practice. Finally, we identify areas for future research along with potential for healthcare reform aimed at increasing autopsy awareness and ultimately reducing mortality from SCD.
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Affiliation(s)
- Thomas H Lynge
- The Department of Cardiology, The Heart Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Christine M Albert
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Cristina Basso
- The Cardiovascular Pathology Unit, Azienda Ospedaliera, Department of Cardiac, Thoracic, and Vascular Sciences and Public Health, University of Padua, Via Aristide Gabelli, 61, 35121 Padova PD, Italy
| | - Rodrigue Garcia
- Department of Cardiology, Poitiers University Hospital, Poitiers, France
| | - Andrew D Krahn
- Center for Cardiovascular Innovation, Heart Rhythm Services, Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Christopher Semsarian
- Agnes Ginges Centre for Molecular Cardiology, Centenary Institute, The University of Sydney, Sydney, Australia
| | - Mary N Sheppard
- Cardiovascular Pathology Unit, Cardiovascular and Genetics Research Institute, St George’s, University of London, St George’s University Hospitals NHS Foundation Trust, London, UK
| | - Elijah R Behr
- Cardiovascular Clinical Academic Group, Cardiovascular and Genetics Research Institute, St George’s University of London and St George’s University Hospitals NHS Foundation Trust, London, UK
| | - Jacob Tfelt-Hansen
- The Department of Cardiology, The Heart Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- The Department of Forensic Medicine, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
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4
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Shah RA, Chahal CAA, Ranjha S, Sharaf Dabbagh G, Asatryan B, Limongelli I, Khanji M, Ricci F, De Paoli F, Zucca S, Tristani-Firouzi M, St Louis EK, So EL, Somers VK. Cardiovascular Disease Burden, Mortality, and Sudden Death Risk in Epilepsy: A UK Biobank Study. Can J Cardiol 2024; 40:688-695. [PMID: 38013064 DOI: 10.1016/j.cjca.2023.11.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/19/2023] [Accepted: 11/07/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND Sudden death is the leading cause of mortality in medically refractory epilepsy. Middle-aged persons with epilepsy (PWE) are under investigated regarding their mortality risk and burden of cardiovascular disease (CVD). METHODS Using UK Biobank, we identified 7786 (1.6%) participants with diagnoses of epilepsy and 6,171,803 person-years of follow-up (mean 12.30 years, standard deviation 1.74); 566 patients with previous histories of stroke were excluded. The 7220 PWE comprised the study cohort with the remaining 494,676 without epilepsy as the comparator group. Prevalence of CVD was determined using validated diagnostic codes. Cox proportional hazards regression was used to assess all-cause mortality and sudden death risk. RESULTS Hypertension, coronary artery disease, heart failure, valvular heart disease, and congenital heart disease were more prevalent in PWE. Arrhythmias including atrial fibrillation/flutter (12.2% vs 6.9%; P < 0.01), bradyarrhythmias (7.7% vs 3.5%; P < 0.01), conduction defects (6.1% vs 2.6%; P < 0.01), and ventricular arrhythmias (2.3% vs 1.0%; P < 0.01), as well as cardiac implantable electric devices (4.6% vs 2.0%; P < 0.01) were more prevalent in PWE. PWE had higher adjusted all-cause mortality (hazard ratio [HR], 3.9; 95% confidence interval [CI], 3.01-3.39), and sudden death-specific mortality (HR, 6.65; 95% CI, 4.53-9.77); and were almost 2 years younger at death (68.1 vs 69.8; P < 0.001). CONCLUSIONS Middle-aged PWE have increased all-cause and sudden death-specific mortality and higher burden of CVD including arrhythmias and heart failure. Further work is required to elucidate mechanisms underlying all-cause mortality and sudden death risk in PWE of middle age, to identify prognostic biomarkers and develop preventative therapies in PWE.
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Affiliation(s)
- Ravi A Shah
- London North West University Healthcare NHS Trust, London, United Kingdom
| | - C Anwar A Chahal
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Rochester, Minnesota, USA; WellSpan Center for Inherited Cardiovascular Diseases, WellSpan Health, York, Pennsylvania, USA.
| | | | - Ghaith Sharaf Dabbagh
- WellSpan Center for Inherited Cardiovascular Diseases, WellSpan Health, York, Pennsylvania, USA; Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Babken Asatryan
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Mohammed Khanji
- Barts Heart Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, United Kingdom; NIHR Barts Biomedical Research Centre, William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Fabrizio Ricci
- Department of Neuroscience, Imaging and Clinical Sciences, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | | | | | | | - Erik K St Louis
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA; Mayo Center for Sleep Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Elson L So
- Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Virend K Somers
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA; Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota, USA
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5
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Bard AM, Clark LV, Cosgun E, Aldinger KA, Timms A, Quina LA, Lavista Ferres JM, Jardine D, Haas EA, Becker TM, Pagan CM, Santani A, Martinez D, Barua S, McNutt Z, Nesbitt A, Mitchell EA, Ramirez JM. Known pathogenic gene variants and new candidates detected in Sudden Unexpected Infant Death using Whole Genome Sequencing. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.09.11.23295207. [PMID: 37745463 PMCID: PMC10516094 DOI: 10.1101/2023.09.11.23295207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Purpose To gain insights into potential genetic factors contributing to the infant's vulnerability to Sudden Unexpected Infant Death (SUID). Methods Whole Genome Sequencing (WGS) was performed on 145 infants that succumbed to SUID, and 576 healthy adults. Variants were filtered by gnomAD allele frequencies and predictions of functional consequences. Results Variants of interest were identified in 86 genes, 63.4% of our cohort. Seventy-one of these have been previously associated with SIDS/SUID/SUDP. Forty-three can be characterized as cardiac genes and are related to cardiomyopathies, arrhythmias, and other conditions. Variants in 22 genes were associated with neurologic functions. Variants were also found in 13 genes reported to be pathogenic for various systemic disorders. Variants in eight genes are implicated in the response to hypoxia and the regulation of reactive oxygen species (ROS) and have not been previously described in SIDS/SUID/SUDP. Seventy-two infants met the triple risk hypothesis criteria (Figure 1). Conclusion Our study confirms and further expands the list of genetic variants associated with SUID. The abundance of genes associated with heart disease and the discovery of variants associated with the redox metabolism have important mechanistic implications for the pathophysiology of SUID.
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6
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Argo A, Puntarello M, Malta G, Buscemi R, Scalzo G, Triolo V, Albano GD, Zerbo S. The analysis of SUDEP forensic autopsies leading to preventable events. Front Neurol 2023; 14:1231515. [PMID: 37456625 PMCID: PMC10346851 DOI: 10.3389/fneur.2023.1231515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 06/12/2023] [Indexed: 07/18/2023] Open
Abstract
Introduction The diagnosis of unexpected death by excluding non-natural causes, particularly in subjects with epilepsy, is a topic of interest and it is difficult to identify in the forensic field. Health professionals sometimes are faced with cases of sudden death, generally in young adults with a long history of epilepsy that require, for judicial purposes, an explanation in terms of cause and means to determine the death. SUDEP is an entity diagnosed by the exclusion of other causes that may have led to death, and then for forensic purposes, it requires particular attention and knowledge, and there is difficulty in identifying it. Our contribution aims to illustrate the scientific community pathological findings, medical history, and circumstantial evidence of four cases of sudden death in epileptic subjects. Method We illustrated four cases of judicial autopsies from the Institute of Forensic Medicine of Palermo, Italy; the purpose was to exclude the criminal intervention in determining the death as non-natural. The study of victims' medical history, the toxicological investigations, and the autopsy findings analyzed both from macroscopic and microscopic aspects have made it possible to highlight some findings that can be traced back to SUDEP despite the small sample of subjects studied. Results These presented findings of four SUDEP cases could help forensic pathologists in recognizing this entity, by highlighting its characteristics, and allowing for a pathological classification, also in relation to the use of drugs for epilepsy treatment and circumstances of death. Discussion To obtain a definite diagnosis of SUDEP, a complex investigation process is required in a multidisciplinary approach. Considering the literature review with criticism, it could allow health professionals to select the characteristics of epileptic patients at risk of sudden death. Processing human behaviors, molecular and histopathological findings of the autopsies, but also the physiological, and pathological human body system functions thanks to Artificial Intelligence, could be the key to explaining SUDEP mechanisms and the future results to prevent it.
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Affiliation(s)
- Antonina Argo
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Section of Legal Medicine, University of Palermo, Palermo, Italy
| | - Maria Puntarello
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Section of Legal Medicine, University of Palermo, Palermo, Italy
| | - Ginevra Malta
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Section of Legal Medicine, University of Palermo, Palermo, Italy
| | - Roberto Buscemi
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Section of Legal Medicine, University of Palermo, Palermo, Italy
| | - Giovanni Scalzo
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Section of Legal Medicine, University of Palermo, Palermo, Italy
| | | | - Giuseppe Davide Albano
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Section of Legal Medicine, University of Palermo, Palermo, Italy
| | - Stefania Zerbo
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Section of Legal Medicine, University of Palermo, Palermo, Italy
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7
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Yu C, Deng XJ, Xu D. Gene mutations in comorbidity of epilepsy and arrhythmia. J Neurol 2023; 270:1229-1248. [PMID: 36376730 DOI: 10.1007/s00415-022-11430-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 11/16/2022]
Abstract
Epilepsy is one of the most common neurological disorders, and sudden unexpected death in epilepsy (SUDEP) is the most severe outcome of refractory epilepsy. Arrhythmia is one of the heterogeneous factors in the pathophysiological mechanism of SUDEP with a high incidence in patients with refractory epilepsy, increasing the risk of premature death. The gene co-expressed in the brain and heart is supposed to be the genetic basis between epilepsy and arrhythmia, among which the gene encoding ion channel contributes to the prevalence of "cardiocerebral channelopathy" theory. Nevertheless, this theory could only explain the molecular mechanism of comorbid arrhythmia in part of patients with epilepsy (PWE). Therefore, we summarized the mutant genes that can induce comorbidity of epilepsy and arrhythmia and the possible corresponding treatments. These variants involved the genes encoding sodium, potassium, calcium and HCN channels, as well as some non-ion channel coding genes such as CHD4, PKP2, FHF1, GNB5, and mitochondrial genes. The relationship between genotype and clinical phenotype was not simple linear. Indeed, genes co-expressed in the brain and heart could independently induce epilepsy and/or arrhythmia. Mutant genes in brain could affect cardiac rhythm through central or peripheral regulation, while in the heart it could also affect cerebral electrical activity by changing the hemodynamics or internal environment. Analysis of mutations in comorbidity of epilepsy and arrhythmia could refine and expand the theory of "cardiocerebral channelopathy" and provide new insights for risk stratification of premature death and corresponding precision therapy in PWE.
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Affiliation(s)
- Cheng Yu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei Province, China
| | - Xue-Jun Deng
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei Province, China
| | - Da Xu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, 430022, Hubei Province, China.
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Guo Y, Wang J, Guo X, Gao R, Yang C, Li L, Sun Y, Qiu X, Xu Y, Yang Y. KLF13 Loss‐of‐Function Mutations Underlying Familial Dilated Cardiomyopathy. J Am Heart Assoc 2022; 11:e027578. [DOI: 10.1161/jaha.122.027578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Background
Dilated cardiomyopathy (DCM), characterized by progressive left ventricular enlargement and systolic dysfunction, is the most common type of cardiomyopathy and a leading cause of heart failure and cardiac death. Accumulating evidence underscores the critical role of genetic defects in the pathogenesis of DCM, and >250 genes have been implicated in DCM to date. However, DCM is of substantial genetic heterogeneity, and the genetic basis underpinning DCM remains elusive in most cases.
Methods and Results
By genome‐wide scan with microsatellite markers and genetic linkage analysis in a 4‐generation family inflicted with autosomal‐dominant DCM, a new locus for DCM was mapped on chromosome 15q13.1–q13.3, a 4.77‐cM (≈3.43 Mbp) interval between markers D15S1019 and D15S1010, with the largest 2‐point logarithm of odds score of 5.1175 for the marker D15S165 at recombination fraction (θ)=0.00. Whole‐exome sequencing analyses revealed that within the mapping chromosomal region, only the mutation in the
KLF13
gene, c.430G>T (p.E144X), cosegregated with DCM in the family. In addition, sequencing analyses of
KLF13
in another cohort of 266 unrelated patients with DCM and their available family members unveiled 2 new mutations, c.580G>T (p.E194X) and c.595T>C (p.C199R), which cosegregated with DCM in 2 families, respectively. The 3 mutations were absent from 418 healthy subjects. Functional assays demonstrated that the 3 mutants had no transactivation on the target genes
ACTC1
and
MYH7
(2 genes causally linked to DCM), alone or together with GATA4 (another gene contributing to DCM), and a diminished ability to bind the promoters of
ACTC1
and
MYH7
. Add, the E144X‐mutant KLF13 showed a defect in intracellular distribution.
Conclusions
This investigation indicates
KLF13
as a new gene predisposing to DCM, which adds novel insight to the molecular pathogenesis underlying DCM, implying potential implications for prenatal prevention and precision treatment of DCM in a subset of patients.
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Affiliation(s)
- Yu‐Han Guo
- Department of Cardiology, Shanghai Fifth People’s Hospital Fudan University Shanghai China
| | - Jun Wang
- Department of Cardiology, Shanghai Jing’an District Central Hospital Fudan University Shanghai China
| | - Xiao‐Juan Guo
- Department of Cardiology, Shanghai Fifth People’s Hospital Fudan University Shanghai China
| | - Ri‐Feng Gao
- Department of Cardiology, Shanghai Fifth People’s Hospital Fudan University Shanghai China
| | - Chen‐Xi Yang
- Department of Cardiology, Shanghai Fifth People’s Hospital Fudan University Shanghai China
| | - Li Li
- Key Laboratory of Arrhythmias of the Ministry of Education of China, Shanghai East Hospital Tongji University School of Medicine Shanghai China
- Institute of Medical Genetics Tongji University Shanghai China
| | - Yu‐Min Sun
- Department of Cardiology, Shanghai Jing’an District Central Hospital Fudan University Shanghai China
| | - Xing‐Biao Qiu
- Department of Cardiology, Shanghai Chest Hospital Shanghai Jiao Tong University Shanghai China
| | - Ying‐Jia Xu
- Department of Cardiology, Shanghai Fifth People’s Hospital Fudan University Shanghai China
| | - Yi‐Qing Yang
- Department of Cardiology, Shanghai Fifth People’s Hospital Fudan University Shanghai China
- Cardiovascular Research Laboratory and Central Laboratory, Shanghai Fifth People’s Hospital Fudan University Shanghai China
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9
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Asatryan B. Challenges in Decoding Sudden Unexpected Death in Epilepsy: The Intersection Between Heart and Brain in Epilepsy. J Am Heart Assoc 2021; 10:e023571. [PMID: 34816737 PMCID: PMC9075400 DOI: 10.1161/jaha.121.023571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Babken Asatryan
- Department of Cardiology Inselspital Bern University HospitalUniversity of Bern Switzerland
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