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Çağlayan AO, Sezer RG, Kaymakçalan H, Ulgen E, Yavuz T, Baranoski JF, Bozaykut A, Harmanci AS, Yalcin Y, Youngblood MW, Yasuno K, Bilgüvar K, Gunel M. ALPK3 gene mutation in a patient with congenital cardiomyopathy and dysmorphic features. Cold Spring Harb Mol Case Stud 2017. [PMID: 28630369 PMCID: PMC5593152 DOI: 10.1101/mcs.a001859] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Primary cardiomyopathy is one of the most common inherited cardiac diseases and harbors significant phenotypic and genetic heterogeneity. Because of this, genetic testing has become standard in treatment of this disease group. Indeed, in recent years, next-generation DNA sequencing has found broad applications in medicine, both as a routine diagnostic tool for genetic disorders and as a high-throughput discovery tool for identifying novel disease-causing genes. We describe a male infant with primary dilated cardiomyopathy who was diagnosed using intrauterine echocardiography and found to progress to hypertrophic cardiomyopathy after birth. This proband was born to a nonconsanguineous family with a past history of a male fetus that died because of cardiac abnormalities at 30 wk of gestation. Using whole-exome sequencing, a novel homozygous frameshift mutation (c.2018delC; p.Gln675SerfsX30) in ALPK3 was identified and confirmed with Sanger sequencing. Heterozygous family members were normal with echocardiographic examination. To date, only two studies have reported homozygous pathogenic variants of ALPK3, with a total of seven affected individuals with cardiomyopathy from four unrelated consanguineous families. We include a discussion of the patient's phenotypic features and a review of relevant literature findings.
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Affiliation(s)
- Ahmet Okay Çağlayan
- Department of Medical Genetics, School of Medicine, Istanbul Bilim University, Istanbul 34394, Turkey.,Departments of Neurosurgery, Neurobiology and Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Rabia Gonul Sezer
- Department of Pediatrics, University of Health Sciences, Zeynep Kamil Maternity and Childrens' Diseases Training and Research Hospital, Istanbul 34668, Turkey
| | - Hande Kaymakçalan
- Department of Pediatrics, School of Medicine, Istanbul Bilim University, Istanbul 34394, Turkey
| | - Ege Ulgen
- Departments of Neurosurgery, Neurobiology and Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Taner Yavuz
- Division of Pediatric Cardiology, Department of Pediatrics, Zeynep Kamil Maternity and Childrens' Diseases Training and Research Hospital, Istanbul 34668, Turkey
| | - Jacob F Baranoski
- Departments of Neurosurgery, Neurobiology and Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Abdulkadir Bozaykut
- Department of Pediatrics, University of Health Sciences, Zeynep Kamil Maternity and Childrens' Diseases Training and Research Hospital, Istanbul 34668, Turkey
| | - Akdes Serin Harmanci
- Departments of Neurosurgery, Neurobiology and Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Yalim Yalcin
- Division of Pediatric Cardiology, Department of Pediatrics, School of Medicine, Istanbul Bilim University, Istanbul 34394, Turkey
| | - Mark W Youngblood
- Departments of Neurosurgery, Neurobiology and Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Katsuhito Yasuno
- Departments of Neurosurgery, Neurobiology and Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Kaya Bilgüvar
- Department of Genetics, Yale Center for Genome Analysis, Yale School of Medicine, New Haven, Connecticut 06510, USA
| | - Murat Gunel
- Departments of Neurosurgery, Neurobiology and Genetics, Yale School of Medicine, New Haven, Connecticut 06510, USA
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Raghow R. An 'Omics' Perspective on Cardiomyopathies and Heart Failure. Trends Mol Med 2016; 22:813-827. [PMID: 27499035 DOI: 10.1016/j.molmed.2016.07.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 07/15/2016] [Accepted: 07/15/2016] [Indexed: 12/27/2022]
Abstract
Pathological enlargement of the heart, represented by hypertrophic cardiomyopathy (HCM) and dilated cardiomyopathy (DCM), occurs in response to many genetic and non-genetic factors. The clinical course of cardiac hypertrophy is remarkably variable, ranging from lifelong absence of symptoms to rapidly declining heart function and sudden cardiac death (SCD). Unbiased omics studies have begun to provide a glimpse into the molecular framework underpinning altered mechanotransduction, mitochondrial energetics, oxidative stress, and extracellular matrix in the heart undergoing physiological and pathological hypertrophy. Omics analyses indicate that post-transcriptional regulation of gene expression plays an overriding role in the normal and diseased heart. Studies to date highlight a need for more effective bioinformatics to better integrate patient omics data with their comprehensive clinical histories.
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Affiliation(s)
- Rajendra Raghow
- Department of Pharmacology, College of Medicine, The University of Tennessee Health Science Center and the VA Medical Center, Memphis, TN 38104, USA.
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Oliveira DCLD, Assunção FB, Santos AASMDD, Nacif MS. Cardiac Magnetic Resonance and Computed Tomography in Hypertrophic Cardiomyopathy: an Update. Arq Bras Cardiol 2016; 107:163-72. [PMID: 27305111 PMCID: PMC5074069 DOI: 10.5935/abc.20160081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 02/04/2016] [Indexed: 01/18/2023] Open
Abstract
Hypertrophic cardiomyopathy (HCM) is the most common genetic cardiovascular
disease and represents the main cause of sudden death in young patients. Cardiac
magnetic resonance (CMR) and cardiac computed tomography (CCT) are noninvasive
imaging methods with high sensitivity and specificity, useful for the
establishment of diagnosis and prognosis of HCM, and for the screening of
patients with subclinical phenotypes. The improvement of image analysis by CMR
and CCT offers the potential to promote interventions aiming at stopping the
natural course of the disease. This study aims to describe the role of RCM and
CCT in the diagnosis and prognosis of HCM, and how these methods can be used in
the management of these patients.
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