1
|
Mazzaccara C, Lombardi R, Mirra B, Barretta F, Esposito MV, Uomo F, Caiazza M, Monda E, Losi MA, Limongelli G, D’Argenio V, Frisso G. Next-Generation Sequencing Gene Panels in Inheritable Cardiomyopathies and Channelopathies: Prevalence of Pathogenic Variants and Variants of Unknown Significance in Uncommon Genes. Biomolecules 2022; 12:1417. [PMID: 36291626 PMCID: PMC9599286 DOI: 10.3390/biom12101417] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/27/2022] [Accepted: 09/30/2022] [Indexed: 08/17/2023] Open
Abstract
The diffusion of next-generation sequencing (NGS)-based approaches allows for the identification of pathogenic mutations of cardiomyopathies and channelopathies in more than 200 different genes. Since genes considered uncommon for a clinical phenotype are also now included in molecular testing, the detection rate of disease-causing variants has increased. Here, we report the prevalence of genetic variants detected by using a NGS custom panel in a cohort of 133 patients with inherited cardiomyopathies (n = 77) or channelopathies (n = 56). We identified 82 variants, of which 50 (61%) were identified in genes without a strong or definitive evidence of disease association according to the NIH-funded Clinical Genome Resource (ClinGen; "uncommon genes"). Among these, 35 (70%) were variants of unknown significance (VUSs), 13 (26%) were pathogenic (P) or likely pathogenic (LP) mutations, and 2 (4%) benign (B) or likely benign (LB) variants according to American College of Medical Genetics (ACMG) classifications. These data reinforce the need for the screening of uncommon genes in order to increase the diagnostic sensitivity of the genetic testing of inherited cardiomyopathies and channelopathies by allowing for the identification of mutations in genes that are not usually explored due to a currently poor association with the clinical phenotype.
Collapse
Affiliation(s)
- Cristina Mazzaccara
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Napoli, Italy
- CEINGE Biotecnologie Avanzate, 80145 Napoli, Italy
| | - Raffaella Lombardi
- Department of Advanced Biomedical Sciences, University of Naples Federico II, 80131 Napoli, Italy
- Department of Medicine, Division of Cardiology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Bruno Mirra
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Napoli, Italy
- CEINGE Biotecnologie Avanzate, 80145 Napoli, Italy
| | - Ferdinando Barretta
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Napoli, Italy
- CEINGE Biotecnologie Avanzate, 80145 Napoli, Italy
| | | | - Fabiana Uomo
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Napoli, Italy
- CEINGE Biotecnologie Avanzate, 80145 Napoli, Italy
| | - Martina Caiazza
- Monaldi Hospital, AO Colli, 80131 Napoli, Italy
- Department of Translational Medical Sciences, University of Campania ‘Luigi Vanvitelli’, 81100 Caserta, Italy
| | - Emanuele Monda
- Monaldi Hospital, AO Colli, 80131 Napoli, Italy
- Department of Translational Medical Sciences, University of Campania ‘Luigi Vanvitelli’, 81100 Caserta, Italy
| | - Maria Angela Losi
- Department of Advanced Biomedical Sciences, University of Naples Federico II, 80131 Napoli, Italy
| | - Giuseppe Limongelli
- Monaldi Hospital, AO Colli, 80131 Napoli, Italy
- Department of Translational Medical Sciences, University of Campania ‘Luigi Vanvitelli’, 81100 Caserta, Italy
| | - Valeria D’Argenio
- CEINGE Biotecnologie Avanzate, 80145 Napoli, Italy
- Department of Human Sciences and Quality of Life Promotion, San Raffaele Open University, 00166 Roma, Italy
| | - Giulia Frisso
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Napoli, Italy
- CEINGE Biotecnologie Avanzate, 80145 Napoli, Italy
| |
Collapse
|