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Jiang N, Xu W, Abdelhakim A, Matveyenko A, Szabolcs M, Copeland WC, Disco M, Iglesias A, Lee TM, Naini A, Ganapathi M. Biallelic potential disease-causing missense variants in TAF1A in two siblings with infantile restrictive cardiomyopathy. Eur J Med Genet 2024; 71:104968. [PMID: 39209150 PMCID: PMC11426185 DOI: 10.1016/j.ejmg.2024.104968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 03/07/2024] [Accepted: 08/25/2024] [Indexed: 09/04/2024]
Abstract
TAF1A, a gene encoding a TATA-box binding protein involved in ribosomal RNA synthesis, is a candidate gene for pediatric cardiomyopathy as biallelic TAF1A variants were reported in two families with affected individuals. Here, we report a third family with two siblings who presented with infantile restrictive cardiomyopathy and carried biallelic missense variants in TAF1A (NM_001201536.1:c.1021G>A p.(Gly341Arg) and c.781A>C p.(Thr261Pro)). Additional shared clinical features in the siblings included feeding intolerance, congenital leukoencephalopathy, ventriculomegaly and concern for primary immunodeficiency. The first-born sibling passed away at 6 months of age due to complications of hemophagocytic lymphohistiocytosis (HLH) whereas the second sibling underwent cardiac transplantation at 1 year of age and is currently well. We compare the clinical and molecular features of all the TAF1A associated cardiomyopathy cases. Our study adds evidence for the gene-disease association of TAF1A with autosomal recessive pediatric cardiomyopathy.
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Affiliation(s)
- Nan Jiang
- Department of Pathology & Cell Biology, Columbia University Irving Medical Center, New York, NY, United States; Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Wenyuan Xu
- Department of Pediatrics, Columbia University Irving Medical Center, Columbia, 10032, United States
| | - Aliaa Abdelhakim
- Department of Pediatrics, Columbia University Irving Medical Center, Columbia, 10032, United States; Department of Ophthalmology, Edward S. Harkness Eye Institute, Columbia University Vagelos College of Physicians and Surgeons and New York Presbyterian Hospital, New York, NY, United States
| | - Anastasiya Matveyenko
- Department of Medicine, Columbia University Irving Medical Center, New York, NY, United States
| | - Matthias Szabolcs
- Department of Pathology & Cell Biology, Columbia University Irving Medical Center, New York, NY, United States
| | - William C Copeland
- Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, United States
| | - Michele Disco
- Department of Pathology & Cell Biology, Columbia University Irving Medical Center, New York, NY, United States; Department of Pediatrics, Columbia University Irving Medical Center, Columbia, 10032, United States
| | - Alejandro Iglesias
- Department of Pediatrics, Columbia University Irving Medical Center, Columbia, 10032, United States
| | - Teresa M Lee
- Department of Pediatrics, Columbia University Irving Medical Center, Columbia, 10032, United States
| | - Ali Naini
- Department of Pathology & Cell Biology, Columbia University Irving Medical Center, New York, NY, United States; Department of Neurology, Columbia University Irving Medical Center, New York, NY, United States.
| | - Mythily Ganapathi
- Department of Pathology & Cell Biology, Columbia University Irving Medical Center, New York, NY, United States.
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Heshmatzad K, Naderi N, Maleki M, Abbasi S, Ghasemi S, Ashrafi N, Fazelifar AF, Mahdavi M, Kalayinia S. Role of non-coding variants in cardiovascular disease. J Cell Mol Med 2023; 27:1621-1636. [PMID: 37183561 PMCID: PMC10273088 DOI: 10.1111/jcmm.17762] [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: 10/31/2022] [Revised: 03/29/2023] [Accepted: 04/25/2023] [Indexed: 05/16/2023] Open
Abstract
Cardiovascular diseases (CVDs) constitute one of the significant causes of death worldwide. Different pathological states are linked to CVDs, which despite interventions and treatments, still have poor prognoses. The genetic component, as a beneficial tool in the risk stratification of CVD development, plays a role in the pathogenesis of this group of diseases. The emergence of genome-wide association studies (GWAS) have led to the identification of non-coding parts associated with cardiovascular traits and disorders. Variants located in functional non-coding regions, including promoters/enhancers, introns, miRNAs and 5'/3' UTRs, account for 90% of all identified single-nucleotide polymorphisms associated with CVDs. Here, for the first time, we conducted a comprehensive review on the reported non-coding variants for different CVDs, including hypercholesterolemia, cardiomyopathies, congenital heart diseases, thoracic aortic aneurysms/dissections and coronary artery diseases. Additionally, we present the most commonly reported genes involved in each CVD. In total, 1469 non-coding variants constitute most reports on familial hypercholesterolemia, hypertrophic cardiomyopathy and dilated cardiomyopathy. The application and identification of non-coding variants are beneficial for the genetic diagnosis and better therapeutic management of CVDs.
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Affiliation(s)
- Katayoun Heshmatzad
- Rajaie Cardiovascular Medical and Research CenterIran University of Medical SciencesTehranIran
| | - Niloofar Naderi
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research CenterIran University of Medical SciencesTehranIran
| | - Majid Maleki
- Rajaie Cardiovascular Medical and Research CenterIran University of Medical SciencesTehranIran
| | - Shiva Abbasi
- Rajaie Cardiovascular Medical and Research CenterIran University of Medical SciencesTehranIran
| | - Serwa Ghasemi
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research CenterIran University of Medical SciencesTehranIran
| | - Nooshin Ashrafi
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research CenterIran University of Medical SciencesTehranIran
| | - Amir Farjam Fazelifar
- Rajaie Cardiovascular Medical and Research CenterIran University of Medical SciencesTehranIran
| | - Mohammad Mahdavi
- Rajaie Cardiovascular Medical and Research CenterIran University of Medical SciencesTehranIran
| | - Samira Kalayinia
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research CenterIran University of Medical SciencesTehranIran
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Sorrentino U, Gabbiato I, Canciani C, Calosci D, Rigon C, Zuccarello D, Cassina M. Homozygous TNNI3 Mutations and Severe Early Onset Dilated Cardiomyopathy: Patient Report and Review of the Literature. Genes (Basel) 2023; 14:genes14030748. [PMID: 36981019 PMCID: PMC10048074 DOI: 10.3390/genes14030748] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/14/2023] [Accepted: 03/16/2023] [Indexed: 03/22/2023] Open
Abstract
The TNNI3 gene encodes for the cardiac isoform of troponin I, a pivotal component of the sarcomeric structure of the myocardium. While heterozygous TNNI3 missense mutations have long been associated with autosomal dominant hypertrophic and restrictive cardiomyopathies, the role of TNNI3 null mutations has been more debated due to the paucity and weak characterization of reported cases and the low penetrance of heterozygous genotypes. In recent years, however, an increasing amount of evidence has validated the hypothesis that biallelic TNNI3 null mutations cause a severe form of neonatal dilated cardiomyopathy. Here, we expand the case series reporting two unrelated patients afflicted with early onset dilated cardiomyopathy, due to homozygosity for the p.Arg98* TNNI3 variant, which had thus far been documented only in heterozygous patients and apparently healthy carriers, and the recurrent p.Arg69Alafs*8 variant, respectively. A review of previously reported biallelic TNNI3 loss-of-function variants and their associated cardiac phenotypes was also performed.
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Affiliation(s)
- Ugo Sorrentino
- Clinical Genetics Unit, Department of Women’s and Children’s Health, University of Padova, 35128 Padova, Italy; (U.S.); (I.G.); (C.C.); (D.C.); (C.R.); (M.C.)
| | - Ilaria Gabbiato
- Clinical Genetics Unit, Department of Women’s and Children’s Health, University of Padova, 35128 Padova, Italy; (U.S.); (I.G.); (C.C.); (D.C.); (C.R.); (M.C.)
| | - Chiara Canciani
- Clinical Genetics Unit, Department of Women’s and Children’s Health, University of Padova, 35128 Padova, Italy; (U.S.); (I.G.); (C.C.); (D.C.); (C.R.); (M.C.)
| | - Davide Calosci
- Clinical Genetics Unit, Department of Women’s and Children’s Health, University of Padova, 35128 Padova, Italy; (U.S.); (I.G.); (C.C.); (D.C.); (C.R.); (M.C.)
| | - Chiara Rigon
- Clinical Genetics Unit, Department of Women’s and Children’s Health, University of Padova, 35128 Padova, Italy; (U.S.); (I.G.); (C.C.); (D.C.); (C.R.); (M.C.)
| | - Daniela Zuccarello
- Clinical Genetics Unit, University Hospital of Padova, 35128 Padova, Italy
- Correspondence: ; Tel.: +39-0498212524
| | - Matteo Cassina
- Clinical Genetics Unit, Department of Women’s and Children’s Health, University of Padova, 35128 Padova, Italy; (U.S.); (I.G.); (C.C.); (D.C.); (C.R.); (M.C.)
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Clinical Exome Sequencing Revealed a De Novo FLNC Mutation in a Child with Restrictive Cardiomyopathy. CARDIOGENETICS 2022. [DOI: 10.3390/cardiogenetics12020019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Restrictive cardiomyopathy (RCM) is a rare disease of the myocardium caused by mutations in several genes including TNNT2, DES, TNNI3, MYPN and FLNC. Individuals affected by RCM often develop heart failure at a young age, requiring early heart transplantation. A 7-year-old patient was referred for genetic testing following a diagnosis of restrictive cardiomyopathy. Clinical exome sequencing analysis identified a likely pathogenic mutation in the FLNC gene [(NM_001458.5 c.6527_6547dup p.(Arg2176_2182dup)]. Its clinical relevance was augmented by the fact that this variant was absent in the parents and was thus interpreted as de novo. Genetic testing is a powerful tool to clarify the diagnosis, guide intervention strategies and enable cascade testing in patients with pediatric-onset RCM.
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Genetic Insights into Primary Restrictive Cardiomyopathy. J Clin Med 2022; 11:jcm11082094. [PMID: 35456187 PMCID: PMC9027761 DOI: 10.3390/jcm11082094] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 12/04/2022] Open
Abstract
Restrictive cardiomyopathy is a rare cardiac disease causing severe diastolic dysfunction, ventricular stiffness and dilated atria. In consequence, it induces heart failure often with preserved ejection fraction and is associated with a high mortality. Since it is a poor clinical prognosis, patients with restrictive cardiomyopathy frequently require heart transplantation. Genetic as well as non-genetic factors contribute to restrictive cardiomyopathy and a significant portion of cases are of unknown etiology. However, the genetic forms of restrictive cardiomyopathy and the involved molecular pathomechanisms are only partially understood. In this review, we summarize the current knowledge about primary genetic restrictive cardiomyopathy and describe its genetic landscape, which might be of interest for geneticists as well as for cardiologists.
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Gerhardt T, Monserrat L, Landmesser U, Poller W. A novel Troponin I mutation associated with severe restrictive cardiomyopathy-a case report of a 27-year-old woman with fatigue. Eur Heart J Case Rep 2022; 6:ytac053. [PMID: 35174310 PMCID: PMC8843866 DOI: 10.1093/ehjcr/ytac053] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/05/2021] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Restrictive cardiomyopathy is rare and heterogeneous in origin, clinical manifestation, and prognosis. Familial forms have, amongst others, been associated with mutations in the TNNI3 gene. We present a case of familial restrictive cardiomyopathy associated with a novel TNNI3 mutation including longitudinal follow-up. CASE SUMMARY A 27-year-old woman was evaluated for fatigue in the context of a family history of sudden cardiac death. Echocardiography was normal except for mild left atrial dilatation. Focused genetic screening, limited to the most common genes associated with cardiomyopathy, was unremarkable in 2006. In biopsy, mild inflammatory cardiomyopathy was diagnosed, and the patient was discharged. Thirteen years later, rapid clinical deterioration occurred in the context of new-onset atrial fibrillation (AF). Echocardiography now showed gross bi-atrial dilatation and evidence of diastolic dysfunction. Based on haemodynamic tracings during angiography, a diagnosis of restrictive cardiomyopathy was made. In 2018, next-generation sequencing revealed the hitherto undescribed Troponin I variant Lys193Glu in a functionally critical domain. Haemodynamic stabilization was achieved by pulmonary vein isolation. Until now, the patient remains symptom free under diuretic treatment. DISCUSSION Diagnosis of restrictive cardiomyopathy is complicated by often oligosymptomatic early presentation and a diverse clinical picture. Thorough medical and family history and early invasive haemodynamic tracing are indispensable in diagnosis. Therapy-refractory AF should raise suspicion. Reporting of longitudinal follow-up cases is essential to better understand the early symptoms, development, and prognosis of this rare disease. Broad genetic testing in unclear cases has become more available and affordable and should be considered early in the diagnostic workflow.
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Affiliation(s)
- Teresa Gerhardt
- Department of Cardiology, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Hindenburgdamm 30, 12203 Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Germany
| | - Lorenzo Monserrat
- Health in Code, Hospital Marítimo de Oza, As Xubias, A Coruña, Spain
| | - Ulf Landmesser
- Department of Cardiology, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Hindenburgdamm 30, 12203 Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Germany
| | - Wolfgang Poller
- Department of Cardiology, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health (BIH), Hindenburgdamm 30, 12203 Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Germany
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Alhamoudi KM, Barhoumi T, Al-Eidi H, Asiri A, Nashabat M, Alaamery M, Alharbi M, Alhaidan Y, Tabarki B, Umair M, Alfadhel M. A homozygous nonsense mutation in DCBLD2 is a candidate cause of developmental delay, dysmorphic features and restrictive cardiomyopathy. Sci Rep 2021; 11:12861. [PMID: 34145321 PMCID: PMC8213761 DOI: 10.1038/s41598-021-92026-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 05/13/2021] [Indexed: 12/24/2022] Open
Abstract
DCBLD2 encodes discodin, CUB and LCCL domain-containing protein 2, a type-I transmembrane receptor that is involved in intracellular receptor signalling pathways and the regulation of cell growth. In this report, we describe a 5-year-old female who presented severe clinical features, including restrictive cardiomyopathy, developmental delay, spasticity and dysmorphic features. Trio-whole-exome sequencing and segregation analysis were performed to identify the genetic cause of the disease within the family. A novel homozygous nonsense variant in the DCBLD2 gene (c.80G > A, p.W27*) was identified as the most likely cause of the patient's phenotype. This nonsense variant falls in the extracellular N-terminus of DCBLD2 and thus might affect proper protein function of the transmembrane receptor. A number of in vitro investigations were performed on the proband's skin fibroblasts compared to normal fibroblasts, which allowed a comprehensive assessment resulting in the functional characterization of the identified DCBLD2 nonsense variant in different cellular processes. Our data propose a significant association between the identified variant and the observed reduction in cell proliferation, cell cycle progression, intracellular ROS, and Ca2 + levels, which would likely explain the phenotypic presentation of the patient as associated with lethal restrictive cardiomyopathy.
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Affiliation(s)
- Kheloud M Alhamoudi
- Medical Genomics Research Department, King Abdullah International Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia
| | - Tlili Barhoumi
- Medical Core Facility and Research Platforms, King Abdullah International Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia
| | - Hamad Al-Eidi
- Medical Genomics Research Department, King Abdullah International Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia
| | - Abdulaziz Asiri
- Faculty of Applied Medical Sciences, University of Bisha, Al Nakhil, 225, Bisha, 67714, Kingdom of Saudi Arabia
| | - Marwan Nashabat
- Division of Genetics, Department of Pediatrics, King Abdullah Specialized Children's Hospital, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, P.O Box 22490, Riyadh, 11426, Kingdom of Saudi Arabia
| | - Manal Alaamery
- Developmental Medicine Department, King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia
| | - Masheal Alharbi
- Medical Genomics Research Department, King Abdullah International Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia
| | - Yazeid Alhaidan
- Medical Genomics Research Department, King Abdullah International Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia
| | - Brahim Tabarki
- Division of Pediatric Neurology, Department of Pediatrics, Prince Sultan Military Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Muhammad Umair
- Medical Genomics Research Department, King Abdullah International Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia
| | - Majid Alfadhel
- Medical Genomics Research Department, King Abdullah International Research Center (KAIMRC), King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia. .,Division of Genetics, Department of Pediatrics, King Abdullah Specialized Children's Hospital, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, P.O Box 22490, Riyadh, 11426, Kingdom of Saudi Arabia.
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Genetic Restrictive Cardiomyopathy: Causes and Consequences-An Integrative Approach. Int J Mol Sci 2021; 22:ijms22020558. [PMID: 33429969 PMCID: PMC7827163 DOI: 10.3390/ijms22020558] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/05/2021] [Accepted: 01/06/2021] [Indexed: 12/12/2022] Open
Abstract
The sarcomere as the smallest contractile unit is prone to alterations in its functional, structural and associated proteins. Sarcomeric dysfunction leads to heart failure or cardiomyopathies like hypertrophic (HCM) or restrictive cardiomyopathy (RCM) etc. Genetic based RCM, a very rare but severe disease with a high mortality rate, might be induced by mutations in genes of non-sarcomeric, sarcomeric and sarcomere associated proteins. In this review, we discuss the functional effects in correlation to the phenotype and present an integrated model for the development of genetic RCM.
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Kapoor M, Das S, Biswas A, Malgulwar PB, Devi NK, Seth S, Bhargava B, Rao VR. D190Y mutation in C-terminal tail region of TNNI3 gene causing severe form of restrictive cardiomyopathy with mild hypertrophy in an Indian patient. Meta Gene 2020. [DOI: 10.1016/j.mgene.2020.100777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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