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Beccacece L, Abondio P, Giorgetti A, Bini C, Pelletti G, Luiselli D, Pelotti S. A Genome-Wide Analysis of a Sudden Cardiac Death Cohort: Identifying Novel Target Variants in the Era of Molecular Autopsy. Genes (Basel) 2023; 14:1265. [PMID: 37372445 DOI: 10.3390/genes14061265] [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: 05/19/2023] [Revised: 06/09/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Sudden cardiac death (SCD) is an unexpected natural death due to cardiac causes, usually happening within one hour of symptom manifestation or in individuals in good health up to 24 h before the event. Genomic screening has been increasingly applied as a useful approach to detecting the genetic variants that potentially contribute to SCD and helping the evaluation of SCD cases in the post-mortem setting. Our aim was to identify the genetic markers associated with SCD, which might enable its target screening and prevention. In this scope, a case-control analysis through the post-mortem genome-wide screening of 30 autopsy cases was performed. We identified a high number of novel genetic variants associated with SCD, of which 25 polymorphisms were consistent with a previous link to cardiovascular diseases. We ascertained that many genes have been already linked to cardiovascular system functioning and diseases and that the metabolisms most implicated in SCD are the lipid, cholesterol, arachidonic acid, and drug metabolisms, suggesting their roles as potential risk factors. Overall, the genetic variants pinpointed herein might be useful markers of SCD, but the novelty of these results requires further investigations.
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Affiliation(s)
- Livia Beccacece
- Computational Genomics Lab, Department of Pharmacy and Biotechnology, University of Bologna, 40126 Bologna, Italy
| | - Paolo Abondio
- aDNA Lab, Department of Cultural Heritage, University of Bologna, Ravenna Campus, 48121 Ravenna, Italy
| | - Arianna Giorgetti
- Unit of Legal Medicine, Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
| | - Carla Bini
- Unit of Legal Medicine, Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
| | - Guido Pelletti
- Unit of Legal Medicine, Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
| | - Donata Luiselli
- aDNA Lab, Department of Cultural Heritage, University of Bologna, Ravenna Campus, 48121 Ravenna, Italy
| | - Susi Pelotti
- Unit of Legal Medicine, Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
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Hu D, Hu D, Liu L, Barr D, Liu Y, Balderrabano-Saucedo N, Wang B, Zhu F, Xue Y, Wu S, Song B, McManus H, Murphy K, Loes K, Adler A, Monserrat L, Antzelevitch C, Gollob MH, Elliott PM, Barajas-Martinez H. Identification, clinical manifestation and structural mechanisms of mutations in AMPK associated cardiac glycogen storage disease. EBioMedicine 2020; 54:102723. [PMID: 32259713 PMCID: PMC7132172 DOI: 10.1016/j.ebiom.2020.102723] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 02/08/2020] [Accepted: 03/03/2020] [Indexed: 01/25/2023] Open
Abstract
Background Although 21 causative mutations have been associated with PRKAG2 syndrome, our understanding of the syndrome remains incomplete. The aim of this project is to further investigate its unique genetic background, clinical manifestations, and underlying structural changes. Methods We recruited 885 hypertrophic cardiomyopathy (HCM) probands and their families internationally. Targeted next-generation sequencing of sudden cardiac death (SCD) genes was performed. The role of the identified variants was assessed using histological techniques and computational modeling. Findings Twelve PRKAG2 syndrome kindreds harboring 5 distinct variants were identified. The clinical penetrance of 25 carriers was 100.0%. Twenty-two family members died of SCD or heart failure (HF). All probands developed bradycardia (HRmin, 36.3 ± 9.8 bpm) and cardiac conduction defects, and 33% had evidence of atrial fibrillation/paroxysmal supraventricular tachycardia (PSVT) and 67% had ventricular preexcitation, respectively. Some carriers presented with apical hypertrophy, hypertension, hyperlipidemia, and renal insufficiency. Histological study revealed reduced AMPK activity and major cardiac channels in the heart tissue with K485E mutation. Computational modelling suggests that K485E disrupts the salt bridge connecting the β and γ subunits of AMPK, R302Q/P decreases the binding affinity for ATP, T400N and H401D alter the orientation of H383 and R531 residues, thus altering nucleotide binding, and N488I and L341S lead to structural instability in the Bateman domain, which disrupts the intramolecular regulation. Interpretation Including 4 families with 3 new mutations, we describe a cohort of 12 kindreds with PRKAG2 syndrome with novel pathogenic mechanisms by computational modelling. Severe clinical cardiac phenotypes may be developed, including HF, requiring close follow-up.
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Affiliation(s)
- Dan Hu
- Department of Cardiology and Cardiovascular Research Institute, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan 430060, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, China.
| | - Dong Hu
- Center for Stem Cell Research and Application, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liwen Liu
- Department of Ultrasound, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Daniel Barr
- Department of Chemistry, University of Mary, 7500 University Drive, Bismarck, ND, USA
| | - Yang Liu
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Er Road, Guangzhou 510080, China
| | | | - Bo Wang
- Department of Ultrasound, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Feng Zhu
- Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China; Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Yumei Xue
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Er Road, Guangzhou 510080, China
| | - Shulin Wu
- Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Er Road, Guangzhou 510080, China
| | - BaoLiang Song
- College of Life Sciences, Wuhan University, Wuhan, China
| | - Heather McManus
- Department of Chemistry and Biochemistry, Utica College, Utica, NY, USA
| | - Katherine Murphy
- Department of Chemistry, University of Mary, 7500 University Drive, Bismarck, ND, USA
| | - Katherine Loes
- Department of Chemistry, University of Mary, 7500 University Drive, Bismarck, ND, USA
| | - Arnon Adler
- Department of Physiology and the Peter Munk Cardiovascular Molecular Medicine Laboratory, Toronto General Hospital, University of Toronto, Toronto, ON, Canada
| | | | - Charles Antzelevitch
- Lankenau Institute for Medical Research, Wynnewood, PA, USA; Lankenau Heart Institute, Sidney Kimmel College of Medicine, Thomas Jefferson University, USA
| | - Michael H Gollob
- Department of Physiology and the Peter Munk Cardiovascular Molecular Medicine Laboratory, Toronto General Hospital, University of Toronto, Toronto, ON, Canada
| | - Perry M Elliott
- University College London and St. Bartholomew's Hospital, London, United Kingdom
| | - Hector Barajas-Martinez
- Lankenau Institute for Medical Research, Wynnewood, PA, USA; Lankenau Heart Institute, Sidney Kimmel College of Medicine, Thomas Jefferson University, USA
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