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Abdullah NM, Ali A. RYR2 receptor gene mutation associated with catecholaminergic polymorphic ventricular tachycardia in children: a case report & literature review. Transl Pediatr 2024; 13:359-369. [PMID: 38455755 PMCID: PMC10915435 DOI: 10.21037/tp-23-255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 10/17/2023] [Indexed: 03/09/2024] Open
Abstract
Background Ryanodine receptor 2 (RYR2) gene mutation causing catecholaminergic polymorphic ventricular tachycardia (CPVT) is one of the identified causes of sudden death in adults and children. Case Description We report a case of RYR2 gene mutation presented with cardiac arrest and recurrent syncopal attack with accidental finding of cardiac tumour. For the systematic review, we used four databases (Scopus, PubMed, Ovid and Google Scholar) to search articles with the terms "RYR2 gene mutation" and "catecholaminergic polymorphic ventricular tachycardia (CPVT)". Fourteen studies were chosen and reviewed together with our reported patient. Most of the patients presented initially with syncopal attack and developed cardiac arrest later. Some of them presented with both syncopal attack and seizures precipitated by exercise or stress. We found that 43.8% of patients shared similar variants or coding effects in RYR2 gene mutation. Demographically, the mean age at presentation is 11 years old with 53% of reported cases were male. Conclusions Refractory arrhythmias cardiac arrest not responding to adrenaline should raise the suspicion towards RYR2 gene mutations. Recognition of this condition is important as it affects the outcome of resuscitation. Untimely diagnosis of RYR2 gene mutations with appropriate use of pharmacological agents during resuscitation is important to ensure a better outcome.
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Affiliation(s)
- Nur Mashitah Abdullah
- Department of Pediatrics, Hospital Pakar Kanak-Kanak (HPKK), The National University of Malaysia, Kuala Lumpur, Malaysia
| | - Adli Ali
- Department of Pediatrics, Hospital Pakar Kanak-Kanak (HPKK), The National University of Malaysia, Kuala Lumpur, Malaysia
- Research Centre, Hospital Pakar Kanak-Kanak (HPKK), The National University of Malaysia, Kuala Lumpur, Malaysia
- Institute of IR4.0, The National University of Malaysia, Bangi, Malaysia
- Infection and Immunology Health and Advanced Medicine Cluster, The National University of Malaysia, Cheras, Kuala Lumpur, Malaysia
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Kong X, Belbachir N, Zeng W, Yan CD, Navada S, Perez MV, Wu JC. Generation of two induced pluripotent stem cell lines from catecholaminergic polymorphic ventricular tachycardia patients carrying RYR2 mutations. Stem Cell Res 2023; 69:103111. [PMID: 37210947 DOI: 10.1016/j.scr.2023.103111] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 05/01/2023] [Indexed: 05/23/2023] Open
Abstract
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a congenital arrhythmic syndrome caused by the RYR2 gene encoded ryanodine receptor. Mutations on RYR2 are commonly associated with ventricular tachycardia after adrenergic stimulation, leading to lethal arrhythmias and sudden cardiac death. We generated two human induced pluripotent stem cell (iPSC) lines from CPVT affected patients carrying single missense heterozygote RYR2 mutations, c.1082 G > A and c.100 A > C. Pluripotency and differentiation capability into derivatives of three germ layers were evaluated along with karyotype stability in the report. The generated patient-specific iPSC lines provide a reliable tool to investigate the CPVT phenotype and understand underlaying mechanisms.
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Affiliation(s)
- Xiaohui Kong
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Cardiology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Nadjet Belbachir
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Cardiology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Wenshu Zeng
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Cardiology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | | | - Sai Navada
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Cardiology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Marco V Perez
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Cardiology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Joseph C Wu
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Cardiology, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Radiology, Stanford University School of Medicine, Stanford, CA 94305, USA.
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