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Breyer M, Grüner J, Klein A, Finke L, Klug K, Sauer M, Üçeyler N. In vitro characterization of cells derived from a patient with the GLA variant c.376A>G (p.S126G) highlights a non-pathogenic role in Fabry disease. Mol Genet Metab Rep 2024; 38:101029. [PMID: 38469097 PMCID: PMC10926200 DOI: 10.1016/j.ymgmr.2023.101029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 03/13/2024] Open
Abstract
Fabry disease (FD) is a life-limiting disorder characterized by intracellular globotriaosylceramide (Gb3) accumulations. The underlying α-galactosidase A (α-GAL A) deficiency is caused by variants in the gene GLA. Variants of unknown significance (VUS) are frequently found in GLA and challenge clinical management. Here, we investigated a 49-year old man with cryptogenic lacunar cerebral stroke and the chance finding of the VUS S126G, who was sent to our center for diagnosis and initiation of a costly and life-long FD-specific treatment. We combined clinical examination with in vitro investigations of dermal fibroblasts (HDF), induced pluripotent stem cells (iPSC), and iPSC-derived sensory neurons. We analyzed α-GAL A activity in iPSC, Gb3 accumulation in all three cell types, and action potential firing in sensory neurons. Neurological examination and small nerve fiber assessment was normal except for reduced distal skin innervation. S126G iPSC showed normal α-GAL A activity compared to controls and no Gb3 deposits were found in all three cell types. Baseline electrophysiological characteristics of S126G neurons showed no difference compared to healthy controls as investigated by patch-clamp recordings. We pioneer multi-level cellular characterization of the VUS S126G using three cell types derived from a patient and provide further evidence for the benign nature of S126G in GLA, which is of great importance in the management of such cases in clinical practice.
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Affiliation(s)
- Maximilian Breyer
- Department of Neurology, University of Würzburg, 97080 Würzburg, Germany
| | - Julia Grüner
- Department of Neurology, University of Würzburg, 97080 Würzburg, Germany
| | - Alexandra Klein
- Department of Neurology, University of Würzburg, 97080 Würzburg, Germany
| | - Laura Finke
- Department of Neurology, University of Würzburg, 97080 Würzburg, Germany
| | - Katharina Klug
- Department of Neurology, University of Würzburg, 97080 Würzburg, Germany
| | - Markus Sauer
- Department of Biophysics and Biotechnology, Biocenter, University of Würzburg, 97074 Würzburg, Germany
| | - Nurcan Üçeyler
- Department of Neurology, University of Würzburg, 97080 Würzburg, Germany
- Würzburg Fabry Center for Interdisciplinary Therapy (FAZIT), University of Würzburg, 97080 Würzburg, Germany
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Del Franco A, Iannaccone G, Meucci MC, Lillo R, Cappelli F, Zocchi C, Pieroni M, Graziani F, Olivotto I. Clinical staging of Anderson-Fabry cardiomyopathy: An operative proposal. Heart Fail Rev 2024; 29:431-444. [PMID: 38006470 DOI: 10.1007/s10741-023-10370-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/06/2023] [Indexed: 11/27/2023]
Abstract
As a slowly progressive form of hypertrophic cardiomyopathy (HCM), Anderson-Fabry disease (FD) resembles the phenotype of the most common sarcomeric forms, although significant differences in presentation and long-term progression may help determine the correct diagnosis. A variety of electrocardiographic and imaging features of FD cardiomyopathy have been described at different times in the course of the disease, and considerable discrepancies remain regarding the assessment of disease severity by individual physicians. Therefore, we here propose a practical staging of FD cardiomyopathy, in hopes it may represent the standard for cardiac evaluation and facilitate communication between specialized FD centres and primary care physicians. We identified 4 main stages of FD cardiomyopathy of increasing severity, based on available evidence from clinical and imaging studies: non-hypertrophic, hypertrophic - pre-fibrotic, hypertrophic - fibrotic, and overt dysfunction. Each stage is described and discussed in detail, following the principle that speaking a common language is critical when managing such complex patients in a multi-disciplinary and sometimes multi-centre setting.
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Affiliation(s)
| | - Giulia Iannaccone
- Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Maria Chiara Meucci
- Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Rosa Lillo
- Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Francesco Cappelli
- Cardiomyopathy Unit, Careggi University Hospital, Florence, Italy
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Chiara Zocchi
- Cardiovascular Department, San Donato Hospital, Arezzo, Italy
| | | | - Francesca Graziani
- Department of Cardiovascular Medicine, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
| | - Iacopo Olivotto
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
- Cardiology Unit, Meyer University Hospital, Florence, Italy
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da Paz OT, Lacerda RCT, de Andrade LGM. Genetic and phenotypic profile of Fabry disease in the population of Vale do Paraiba and Eastern São Paulo. J Bras Nefrol 2023; 45:424-439. [PMID: 36745055 PMCID: PMC10726653 DOI: 10.1590/2175-8239-jbn-2022-0107en] [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: 06/26/2022] [Accepted: 12/19/2022] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Fabry disease (FD) is an inborn error of metabolism characterized by α-galactosidase A deficiency. The primary objective was to evaluate the genetic and phenotypic profile of Fabry disease in hemodialysis. METHODS Observational cohort study to determine the incidence of genetic variations and phenotypic changes for FD in hemodialysis patients in the Paraiba Valley and Eastern São Paulo. Genetic testing for the GLA gene was performed for men and women over 12 years of age at the hemodialysis clinics between January 2016 and December 2019 as a screening protocol. RESULTS The cases came from screening exams of the index case among patients with chronic kidney disease, resulting in 17 families and totaling 82 patients under study. The classification of the most prevalent variant was that of uncertain significance (54%), followed by the pathogenic variant (46%). Five patients in two families were described with two types of variants not previously described in the literature, with pathogenic behavior. Comparing the types of variants, the presence of a pathogenic variant was associated with higher levels of lysoGB3, lower values for alpha-GAL activity and higher frequency of symptoms related to FD. CONCLUSION We characterized an extensive population of patients with FD variants with rich genetic, clinical and biomarker details. We believe that this study can help to better characterize the Brazilian population with FD and the most frequent types of variants.
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Averbuch T, White JA, Fine NM. Anderson-Fabry disease cardiomyopathy: an update on epidemiology, diagnostic approach, management and monitoring strategies. Front Cardiovasc Med 2023; 10:1152568. [PMID: 37332587 PMCID: PMC10272370 DOI: 10.3389/fcvm.2023.1152568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 05/09/2023] [Indexed: 06/20/2023] Open
Abstract
Anderson-Fabry disease (AFD) is an X-linked lysosomal storage disorder caused by deficient activity of the enzyme alpha-galactosidase. While AFD is recognized as a progressive multi-system disorder, infiltrative cardiomyopathy causing a number of cardiovascular manifestations is recognized as an important complication of this disease. AFD affects both men and women, although the clinical presentation typically varies by sex, with men presenting at a younger age with more neurologic and renal phenotype and women developing a later onset variant with more cardiovascular manifestations. AFD is an important cause of increased myocardial wall thickness, and advances in imaging, in particular cardiac magnetic resonance imaging and T1 mapping techniques, have improved the ability to identify this disease non-invasively. Diagnosis is confirmed by the presence of low alpha-galactosidase activity and identification of a mutation in the GLA gene. Enzyme replacement therapy remains the mainstay of disease modifying therapy, with two formulations currently approved. In addition, newer treatments such as oral chaperone therapy are now available for select patients, with a number of other investigational therapies in development. The availability of these therapies has significantly improved outcomes for AFD patients. Improved survival and the availability of multiple agents has presented new clinical dilemmas regarding disease monitoring and surveillance using clinical, imaging and laboratory biomarkers, in addition to improved approaches to managing cardiovascular risk factors and AFD complications. This review will provide an update on clinical recognition and diagnostic approaches including differentiation from other causes of increased ventricular wall thickness, in addition to modern strategies for management and follow-up.
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Affiliation(s)
- Tauben Averbuch
- Division of Cardiology, Department of Cardiac Sciences, University of Calgary, Calgary, AB, Canada
| | - James A. White
- Division of Cardiology, Department of Cardiac Sciences, University of Calgary, Calgary, AB, Canada
- Stephenson Cardiac Imaging Center, Alberta Health Services, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Nowell M. Fine
- Division of Cardiology, Department of Cardiac Sciences, University of Calgary, Calgary, AB, Canada
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Pieroni M, Zocchi C, Ciabatti M. Fabry disease in patients with pacemaker: A needle in a haystack? Int J Cardiol 2023; 377:89-90. [PMID: 36640960 DOI: 10.1016/j.ijcard.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 01/08/2023] [Indexed: 01/13/2023]
Affiliation(s)
- Maurizio Pieroni
- From the Cardiovascular Department, San Donato Hospital, Arezzo, Italy.
| | - Chiara Zocchi
- From the Cardiovascular Department, San Donato Hospital, Arezzo, Italy
| | - Michele Ciabatti
- From the Cardiovascular Department, San Donato Hospital, Arezzo, Italy
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Avanesov M, Asgari A, Muschol N, Köhn AF, Tahir E, Adam G, Kirchhof P, Lund G, Cavus E, Patten M. Comparison of classical Fabry and its p.D313Y and p.A143T variants by cardiac T1 mapping, LGE and feature tracking myocardial strain. Sci Rep 2023; 13:5809. [PMID: 37037838 PMCID: PMC10086062 DOI: 10.1038/s41598-023-32464-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 03/28/2023] [Indexed: 04/12/2023] Open
Abstract
Cardiac manifestation of classical Fabry disease (cFD) varies with sex and presence of left ventricular hypertrophy. p.D313Y/p.A143T variants (vFD) represent milder late-onset phenotypes, however, data on vFD are scarce. Patients with FD (cFD = 37;vFD = 14) and 14 healthy controls underwent 1.5 T CMR including Cine, LGE, native T1 mapping(nT1) and myocardial strain(CMR-FT). CMR-FT was assessed using ventricular longitudinal, circumferential, radial (LV-GLS/RV-GLS, LV-GCS/LV-GRS), and atrial longitudinal strain (LA/RATotal, LA/RAConduit, LA/RABooster). In cFD reduced myocardial strain (LV-GLS: -20 ± 4 vs. -24 ± 3%,p = 0.007; LV-GCS: -20 ± 4 vs. -26 ± 4%,p = 0.002, LA Total -GLS: 29 ± 10 vs. 37 ± 6%,p = 0.007; LA Conduit -GLS: 15 ± 10 vs. 23 ± 5%,p = 0.003) and nT1 values (951 ± 51 ms vs. 1036 ± 20 ms, p < 0.001) were observed compared to controls. In vFD findings were comparable to controls. LV-GCS provided the closest Area under the curve (AUC) to nT1 (0.84 vs. 0.92, p > 0.05) for discrimination of cFD versus controls. Significantly lower LV-GLS/LV-GCS was found in male compared to female cFD (-19 ± 4 vs. -22 ± 4%, p = 0.03). In six non-hypertrophied female cFD with normal nT1 LATotal -GLS was the only discriminating parameter with an accuracy of 86%. LV-GLS, LV-GCS and LATotal -GLS can detect impaired cardiac mechanics of cFD besides nT1. LATotal -GLS might identify non-hypertrophied female cFD. Variants p.D313Y/p.A143T did not reveal cardiac involvement by multiparametric CMR.
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Affiliation(s)
- Maxim Avanesov
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Hamburg, Germany
| | - Anahid Asgari
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Hamburg, Germany
| | - Nicole Muschol
- Department of Pediatrics, International Center for Lysosomal Disorders (ICLD), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anja Friederike Köhn
- Department of Pediatrics, International Center for Lysosomal Disorders (ICLD), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Enver Tahir
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Hamburg, Germany
| | - Gerhard Adam
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Hamburg, Germany
| | - Paulus Kirchhof
- Department of Cardiology, University Heart and Vascular Center Hamburg Eppendorf, University Hospital Hamburg Eppendorf, 20246, Hamburg, Germany
- Deutsches Zentrum Für Herz-Kreislauf-Forschung e.V. (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Germany, Hamburg, Germany
| | - Gunnar Lund
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Hospital Hamburg Eppendorf, Hamburg, Germany
| | - Ersin Cavus
- Department of Cardiology, University Heart and Vascular Center Hamburg Eppendorf, University Hospital Hamburg Eppendorf, 20246, Hamburg, Germany.
- Deutsches Zentrum Für Herz-Kreislauf-Forschung e.V. (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Germany, Hamburg, Germany.
| | - Monica Patten
- Department of Cardiology, University Heart and Vascular Center Hamburg Eppendorf, University Hospital Hamburg Eppendorf, 20246, Hamburg, Germany
- Deutsches Zentrum Für Herz-Kreislauf-Forschung e.V. (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Germany, Hamburg, Germany
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Valtola K, Hedman M, Kantola I, Walls S, Helisalmi S, Maria M, Raivo J, Auray-Blais C, Kuusisto J. Late-onset and classic phenotypes of Fabry disease in males with the GLA-Thr410Ala mutation. Open Heart 2023; 10:openhrt-2023-002251. [PMID: 36927868 PMCID: PMC10030781 DOI: 10.1136/openhrt-2023-002251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/27/2023] [Indexed: 03/18/2023] Open
Abstract
OBJECTIVE To present phenotypic characteristics and biomarkers of a family with the rare mutation Thr410Ala of the α-galactosidase A gene (T410A/GLA) causing Fabry disease (FD). METHODS AND RESULTS In a woman in her 60s with hypertrophic cardiomyopathy, T410A/GLA was found in screening for variants in 59 cardiomyopathy-related genes. Her son in his 40s, two granddaughters and two great grandsons carried T410A/GLA. The son had a history of hypertension and paroxysmal AF but no microalbuminuria or classic symptoms or signs of FD. Baseline α-galactosidase A enzyme (α-Gal A) activity varied from 0% to 26.5%. Cardiac MRI showed mild Fabry cardiomyopathy (FC). During 11 years of enzyme replacement therapy (ERT), FC progressed and he suffered sudden cardiac death in his 50s. The great grandsons with T410A/GLA had no active α-Gal A, high lyso-Gb3 levels and normal cardiac imaging. They suffered from neuropathic pain and gastrointestinal symptoms and were started with ERT at the age under 10. Granddaughters with T410A/GLA had α-Gal A activities of 8-18 and 10% of normal. The older granddaughter in her 30s was diagnosed with incipient FC. Plasma lyso-Gb3 analogues were elevated, markedly in the elder male with FC and moderately in the elder granddaughter. In young males with classic phenotype, plasma lyso-Gb3 analogues were only slightly elevated. CONCLUSIONS The T410A/GLA mutation caused late-onset FD with progressive cardiomyopathy in elder male, and classic FD in young males of the same family. Varying levels of α-Gal A and lyso-Gb3 analogues reflected variable phenotype of FD in the family.
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Affiliation(s)
- Kati Valtola
- Heart Center, Kuopio University Hospital, Kuopio, Finland
| | - Marja Hedman
- Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
- Institute of Clinical Medicine, University of Eastern Finland Institute of Clinical Medicine, Kuopio, Finland
| | - Ilkka Kantola
- Division of Medicine, Turku University Hospital, Turku, Finland
| | - Susanne Walls
- Division of Medicine, Turku University Hospital, Turku, Finland
| | - Seppo Helisalmi
- Institute of Clinical Medicine, University of Eastern Finland Institute of Clinical Medicine, Kuopio, Finland
- Institute of Health Sciences, University of Eastern Finland Faculty of Health Sciences, Kuopio, Finland
| | - Maleeha Maria
- Faculty of Health Sciences, A.I.Virtanen Institute, University of Eastern Finland School of Medicine, Kuopio, Finland
| | - Joose Raivo
- Institute of Clinical Medicine, University of Eastern Finland Institute of Clinical Medicine, Kuopio, Finland
- Institute of Health Sciences, University of Eastern Finland Faculty of Health Sciences, Kuopio, Finland
| | - Christiane Auray-Blais
- Department of Pediatrics, Division of Medical Genetics, Faculty of Medicine and Health Sciences, Universite de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Johanna Kuusisto
- Centre for Medicine and Clinical Research, Kuopio University Hospital, Kuopio, Finland
- Centre for Medicine and Clinical Research, University of Eastern Finland School of Medicine, Kuopio, Finland
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Paz OTD, Lacerda RCT, de Andrade LGM. Perfil genético e fenotípico da doença de Fabry na população do Vale do Paraíba e Zona Leste de São Paulo. J Bras Nefrol 2023. [DOI: 10.1590/2175-8239-jbn-2022-0107pt] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
RESUMO Introdução: A doença de Fabry (DF) é um erro inato do metabolismo caracterizado pela deficiência da enzima α-galactosidase A. O objetivo primário foi avaliar o perfil genético e fenotípico da doença de Fabry em hemodiálise. Métodos: Estudo de coorte observacional para determinar a incidência de variações genéticas e alterações fenotípicas para DF em pacientes em hemodiálise no Vale do Paraíba e Zona Leste de São Paulo. O teste genético para o gene GLA foi realizado para homens e mulheres em todos os pacientes das clínicas de hemodiálise maiores de 12 anos entre janeiro de 2016 a dezembro de 2019 como protocolo de rastreio. Resultados: Os casos foram provenientes de exames de triagem do caso índice entre pacientes portadores de doença renal crônica, resultando em 17 famílias e totalizando 82 pacientes em estudo. A classificação da variante mais prevalente foi a de significado incerto (54%), seguida da variante patogênica (46%). Foram descritos 5 pacientes em duas famílias com dois tipos de variantes ainda não previamente descritos na literatura com comportamento patogênico. Na comparação entre os tipos de variantes, a presença de variante patogênica foi associada a maiores níveis de lysoGB3, menores valores da atividade da alfa-GAL e maior frequência de sintomas relativos à DF. Conclusão: Caracterizamos uma extensa população de pacientes com variantes para DF com riqueza de detalhes de genética, clínica e de biomarcadores. Acreditamos que este estudo possa auxiliar na melhor caracterização da população brasileira com DF e nos tipos mais frequentes de variantes.
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Müntze J, Lau K, Cybulla M, Brand E, Cairns T, Lorenz L, Üçeyler N, Sommer C, Wanner C, Nordbeck P. Patient reported quality of life and medication adherence in Fabry disease patients treated with migalastat: A prospective, multicenter study. Mol Genet Metab 2023; 138:106981. [PMID: 36709535 DOI: 10.1016/j.ymgme.2022.106981] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
AIMS Chaperone therapy with migalastat is a novel therapy option in Fabry disease (FD). In contrast to biweekly intravenous enzyme-replacement-therapy in a healthcare setting, oral delivery of migalastat every other day relies on the patient self-administration. Therapy adherence to migalastat and patient reported outcomes have not yet been studied in a real-world scenario. METHODS AND RESULTS Prospective multicenter 'MigALastat Therapy Adherence among FABRY patients' (MALTA-FABRY) study examined therapy adherence and patient-reported outcomes including quality of life in FD-patients receiving migalastat. Outcome measurements were elicited by the 'Medication Adherence Questionnaire (MAQ)', 'SF-36' and 'Fabry Pain Questionnaire' over a follow-up period of 24 months. Therapy adherence was graded as high (MAQ score of 4), medium (score of 2-3) or low (score 0-1). Within the recruitment period between 2017 and 2021, 40 patients (19 females) from 3 German FD-centers were included in the study. Nearly all patients (n = 37, 92.5%) showed good therapy adherence (MAQ6Mmean:3.93, MAQ12Mmean:3.71 and MAQ24Mmean:3.7). Only one patient fulfilled criteria for low adherence. Patient reported outcomes with completed SF-36 questionnaires were available in 28 patients (14 females). Over 24 months, significant improvement of pain and life role limitations due to physical activity was reported (Pain: change from baseline: 8.57 points, 95%-CI: 1.32-15.82, p = 0.022; role limitations physical: change from baseline: 13.39 points, 95%-CI: 0.61-23.2, p = 0.048). CONCLUSION Migalastat therapy adherence in FD-patients was high and remained high over a follow-up period of 2 years. Patient reported quality of life remained mostly stable, while pain and physical limitations improved over time.
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Affiliation(s)
- Jonas Müntze
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany; Fabry Center for Interdisciplinary Therapy (FAZiT), University Hospital Würzburg, Würzburg, Germany
| | - Kolja Lau
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany; Fabry Center for Interdisciplinary Therapy (FAZiT), University Hospital Würzburg, Würzburg, Germany
| | - Markus Cybulla
- Department of Nephrology and Rheumatology, FGM, Center of Internal Medicine, Müllheim, Germany
| | - Eva Brand
- Department of Internal Medicine D, and Interdisciplinary Fabry Center (IFAZ), University Hospital Münster, Münster, Germany
| | - Tereza Cairns
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany; Fabry Center for Interdisciplinary Therapy (FAZiT), University Hospital Würzburg, Würzburg, Germany
| | - Lora Lorenz
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany; Fabry Center for Interdisciplinary Therapy (FAZiT), University Hospital Würzburg, Würzburg, Germany
| | - Nurcan Üçeyler
- Fabry Center for Interdisciplinary Therapy (FAZiT), University Hospital Würzburg, Würzburg, Germany; Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Claudia Sommer
- Fabry Center for Interdisciplinary Therapy (FAZiT), University Hospital Würzburg, Würzburg, Germany; Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Christoph Wanner
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany; Fabry Center for Interdisciplinary Therapy (FAZiT), University Hospital Würzburg, Würzburg, Germany
| | - Peter Nordbeck
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany; Fabry Center for Interdisciplinary Therapy (FAZiT), University Hospital Würzburg, Würzburg, Germany.
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Screening of Fabry disease in patients with an implanted permanent pacemaker. Int J Cardiol 2023; 372:71-75. [PMID: 36473604 DOI: 10.1016/j.ijcard.2022.11.062] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/14/2022] [Accepted: 11/29/2022] [Indexed: 12/07/2022]
Abstract
BACKGROUND Anderson-Fabry disease (AFD) is an X-linked inherited lysosomal disease caused by a defect in the gene encoding lysosomal enzyme α-galactosidase A (GLA). Atrio-ventricular (AV) nodal conduction defects and sinus node dysfunction are common complications of the disease. It is not fully elucidated how frequently AFD is responsible for acquired AV block or sinus node dysfunction and if some AFD patients could manifest primarily with spontaneous bradycardia in general population. The purpose of study was to evaluate the prevalence of AFD in male patients with implanted permanent pacemaker (PM). METHODS The prospective multicentric screening in consecutive male patients between 35 and 65 years with implanted PM for acquired third- or second- degree type 2 AV block or symptomatic second- degree type 1 AV block or sinus node dysfunction was performed. RESULTS A total of 484 patients (mean age 54 ± 12 years at time of PM implantation) were enrolled to the screening in 12 local sites in Czech Republic. Out of all patients, negative result was found in 481 (99%) subjects. In 3 cases, a GLA variant was found, classified as benign: p.Asp313Tyr, p.D313Y). Pathogenic GLA variants (classical or non-classical form) or variants of unclear significance were not detected. CONCLUSION The prevalence of pathogenic variants causing AFD in a general population sample with implanted permanent PM for AV conduction defects or sinus node dysfunction seems to be low. Our findings do not advocate a routine screening for AFD in all adult males with clinically significant bradycardia.
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Carnicer-Cáceres C, Villena-Ortiz Y, Castillo-Ribelles L, Barquín-Del-Pino R, Camprodon-Gomez M, Felipe-Rucián A, Moreno-Martínez D, Lucas-Del-Pozo S, Hernández-Vara J, García-Serra A, Tigri-Santiña A, Moltó-Abad M, Agraz-Pamplona I, Rodriguez-Palomares JF, Limeres-Freire J, Macaya-Font M, Rodríguez-Sureda V, Miguel LDD, Del-Toro-Riera M, Pintos-Morell G, Arranz-Amo JA. Influence of initial clinical suspicion on the diagnostic yield of laboratory enzymatic testing in lysosomal storage disorders. Experience from a multispecialty hospital. Blood Cells Mol Dis 2023; 98:102704. [PMID: 36265282 DOI: 10.1016/j.bcmd.2022.102704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 07/29/2022] [Accepted: 09/27/2022] [Indexed: 11/11/2022]
Abstract
Lysosomal storage disorders (LSD) are a group of inherited metabolic diseases mainly caused by a deficiency of lysosomal hydrolases, resulting in a gradual accumulation of non-degraded substrates in different tissues causing the characteristic clinical manifestations of such disorders. Confirmatory tests of suspected LSD individuals include enzymatic and genetic testing. A well-oriented clinical suspicion can improve the cost-effectiveness of confirmatory tests and reduce the time expended to achieve the diagnosis. Thus, this work aims to retrospectively study the influence of clinical orientation on the diagnostic yield of enzymatic tests in LSD by retrieving clinical, biochemical, and genetic data obtained from subjects with suspicion of LSD. Our results suggest that the clinical manifestations at the time of diagnosis and the initial clinical suspicion can have a great impact on the diagnostic yield of enzymatic tests, and that clinical orientation performed in specialized clinical departments can contribute to improve it. In addition, the analysis of enzymatic tests as the first step in the diagnostic algorithm can correctly guide subsequent confirmatory genetic tests, in turn increasing their diagnostic yield. In summary, our results suggest that initial clinical suspicion plays a crucial role on the diagnostic yield of confirmatory enzymatic tests in LSD.
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Affiliation(s)
- Clara Carnicer-Cáceres
- Laboratory of Inborn Errors of Metabolism, Laboratoris Clínics, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Yolanda Villena-Ortiz
- Laboratory of Inborn Errors of Metabolism, Laboratoris Clínics, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Laura Castillo-Ribelles
- Laboratory of Inborn Errors of Metabolism, Laboratoris Clínics, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Raquel Barquín-Del-Pino
- Laboratory of Inborn Errors of Metabolism, Laboratoris Clínics, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Maria Camprodon-Gomez
- Department of Internal Medicine, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain; Unit of Hereditary Metabolic Disorders, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Ana Felipe-Rucián
- Department of Pediatric Neurology, Unit of Hereditary Metabolic Disorders, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, 08035 Barcelona, Spain.
| | - David Moreno-Martínez
- Department of Internal Medicine, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain; Unit of Hereditary Metabolic Disorders, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Sara Lucas-Del-Pozo
- Neurodegenerative Diseases Laboratory, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain; Department of Neurology, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain
| | - Jorge Hernández-Vara
- Neurodegenerative Diseases Laboratory, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain; Department of Neurology, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Anna García-Serra
- Neurodegenerative Diseases Laboratory, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Ariadna Tigri-Santiña
- Unit of Hereditary Metabolic Disorders, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Marc Moltó-Abad
- Functional Validation & Preclinical Research, Drug Delivery & Targeting Group, CIBIM-Nanomedicine, Vall d'Hebron Institut de Recerca (VHIR), Universitat Autònoma de Barcelona (UAB), 08035 Barcelona, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), 08035 Barcelona, Spain.
| | - Irene Agraz-Pamplona
- Department of Nephrology, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Jose F Rodriguez-Palomares
- Department of Cardiology, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Javier Limeres-Freire
- Department of Cardiology, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Marc Macaya-Font
- Laboratory of Inborn Errors of Metabolism, Laboratoris Clínics, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Victor Rodríguez-Sureda
- Centre for Biomedical Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Barcelona, Spain; Biochemistry and Molecular Biology Research Centre for Nanomedicine, Hospital Universitari Vall d'Hebron, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
| | - Lucy Dougherty-De Miguel
- Department of Pediatric Neurology, Unit of Hereditary Metabolic Disorders, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, 08035 Barcelona, Spain.
| | - Mireia Del-Toro-Riera
- Unit of Hereditary Metabolic Disorders, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain; Department of Pediatric Neurology, Unit of Hereditary Metabolic Disorders, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, 08035 Barcelona, Spain.
| | - Guillem Pintos-Morell
- Unit of Hereditary Metabolic Disorders, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain; Functional Validation & Preclinical Research, Drug Delivery & Targeting Group, CIBIM-Nanomedicine, Vall d'Hebron Institut de Recerca (VHIR), Universitat Autònoma de Barcelona (UAB), 08035 Barcelona, Spain.
| | - Jose Antonio Arranz-Amo
- Laboratory of Inborn Errors of Metabolism, Laboratoris Clínics, Vall d'Hebron Barcelona Hospital Campus, Vall d'Hebron Hospital Universitari, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain.
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12
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Viall S, Dennis A, Yang A. Newborn screening for Fabry disease in Oregon: Approaching the iceberg of A143T and variants of uncertain significance. AMERICAN JOURNAL OF MEDICAL GENETICS. PART C, SEMINARS IN MEDICAL GENETICS 2022; 190:206-214. [PMID: 36156392 DOI: 10.1002/ajmg.c.31998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 08/01/2022] [Accepted: 08/27/2022] [Indexed: 06/16/2023]
Abstract
Fabry disease newborn screening (NBS) has been ongoing in Oregon for over 41 months by first-tier enzyme quantitation and second-tier DNA testing. During that period the majority of abnormal referrals received (34/60) were for the presence of the controversial c.427G > A (p.Ala143Thr) aka A143T and the majority of non-A143T referrals were for other variants of uncertain significance (17/60) resulting in at least 32 infants with an inconclusive case outcome even after clinical evaluation and/or diagnostic testing. To date there has been no significant family history or onset of symptoms in individuals with an inconclusive outcome. Based on our experience, we have developed a framework for approaching A143T and other variants of uncertain clinical significance in an attempt to balance sensitivity with the unnecessary medicalization of healthy infants.
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Affiliation(s)
- Sarah Viall
- Oregon Health & Science University, Portland, Oregon, USA
| | - Anna Dennis
- Oregon Health & Science University, Portland, Oregon, USA
| | - Amy Yang
- Oregon Health & Science University, Portland, Oregon, USA
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13
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Savostyanov K, Pushkov A, Zhanin I, Mazanova N, Trufanov S, Pakhomov A, Alexeeva A, Sladkov D, Asanov A, Fisenko A. The prevalence of Fabry disease among 1009 unrelated patients with hypertrophic cardiomyopathy: a Russian nationwide screening program using NGS technology. Orphanet J Rare Dis 2022; 17:199. [PMID: 35578305 PMCID: PMC9109305 DOI: 10.1186/s13023-022-02319-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 04/09/2022] [Indexed: 12/03/2022] Open
Abstract
Background There is a vast number of screening studies described in the literature from the beginning of the twenty-first century to the present day. Many of these studies are related to the estimation of Fabry disease (FD) morbidity among patients from high-risk groups, including adult patients with hypertrophic cardiomyopathy (HCM) and left ventricular hypertrophy (LVH). These studies show diverse detection frequencies (0–12%) depending on the methodology. Our study is the only example of large-scale selective FD screening based on the implementation of next-generation sequencing technology (NGS) as a first-level test to estimate FD morbidity in the Russian population over 18 years of age burdened with HCM. Methods The study included 1009 patients (578 males and 431 females), with a median age of 50 years, who were diagnosed with HCM according to current clinical guidelines. In the first stage of screening, all patients underwent molecular genetic testing (NGS method) of target regions. These regions included the coding sequences of 17 genes and mutations that can lead to the development of HCM. Lysosomal globotriaosylsphingosine (lyso-Gb3) concentrations and α-galactosidase A (α-gal A) enzyme activity were measured in the second stage of screening to reveal pathogenic or likely pathogenic variants in the GLA gene. Results We revealed 8 (0.8%) patients (3 (37.5%) males and 5 (62.5%) females) with an average age of 59 ± 13.3 years who had pathogenic, likely pathogenic variants and variants of uncertain significance (VUS) in the GLA gene (NM_000169.2) as a result of selective screening of 1009 Russian patients with HCM. FD was confirmed via biochemical tests in a male with the pathogenic variant c.902G > A, p.R301Q as well as in two females with likely pathogenic variants c.897C > A, p.D299E and c.1287_1288dup, p.*430Fext*?. These tests showed reduced enzymatic activity and increased substrate concentration. However, a female with the pathogenic variant c.416A > G, p.N139S and with normal enzymatic activity only had increased substrate concentrations. The revealed nucleotide variants and high values of biochemical indicators (lyso-Gb3) in these 4 patients allowed us to estimate the FD diagnosis among 1009 Russian patients with HCM. Mild extracardiac manifestations were observed in these four patients; however, both biochemical values within the reference range in females with the c.971T > G, p.L324W (VUS) variant. α-gal A activity and lyso-Gb3 concentrations were also within the normal range in two males with hemizygous variants, c.546T > C, p.D182D and c.640-794_640-791del (we regarded them as VUS), and in one female with the c.427G > A, p.A143T variant (with conflicting interpretations of pathogenicity). Conclusion The prevalence rate of FD among 1,009 adult Russian patients with HCM was 0.4%. We recommend FD screening among adult patients of both sexes with HCM and an undefined genetic cause via NGS method with subsequent analysis of α-gal A activity and lyso-Gb3 concentration in patients with pathogenic, likely pathogenic variants, and VUS. This strategy identifies patients with an atypical form of FD that is characterized by high residual activity of α-gal A, low concentrations of lyso-Gb3, and minor extracardiac manifestations.
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14
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Resdal Dyssekilde J, Frederiksen TC, Christiansen MK, Hasle Sørensen R, Pedersen LN, Loof Møller P, Christensen LS, Larsen JM, Thomsen KK, Lindhardt TB, Böttcher M, Molsted S, Havndrup O, Fischer T, Møller DS, Henriksen FL, Johansen JB, Nielsen JC, Bundgaard H, Nygaard M, Jensen HK. Diagnostic Yield of Genetic Testing in Young Patients With Atrioventricular Block of Unknown Cause. J Am Heart Assoc 2022; 11:e025643. [PMID: 35470684 PMCID: PMC9238593 DOI: 10.1161/jaha.121.025643] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Background The cause of atrioventricular block (AVB) remains unknown in approximately half of young patients with the diagnosis. Although variants in several genes associated with cardiac conduction diseases have been identified, the contribution of genetic variants in younger patients with AVB is unknown. Methods and Results Using the Danish Pacemaker and Implantable Cardioverter Defibrillator (ICD) Registry, we identified all patients younger than 50 years receiving a pacemaker because of AVB in Denmark in the period from January 1, 1996 to December 31, 2015. From medical records, we identified patients with unknown cause of AVB at time of pacemaker implantation. These patients were invited to a genetic screening using a panel of 102 genes associated with inherited cardiac diseases. We identified 471 living patients with AVB of unknown cause, of whom 226 (48%) accepted participation. Median age at the time of pacemaker implantation was 39 years (interquartile range, 32–45 years), and 123 (54%) were men. We found pathogenic or likely pathogenic variants in genes associated with or possibly associated with AVB in 12 patients (5%). Most variants were found in the LMNA gene (n=5). LMNA variant carriers all had a family history of either AVB and/or sudden cardiac death. Conclusions In young patients with AVB of unknown cause, we found a possible genetic cause in 1 out of 20 participating patients. Variants in the LMNA gene were most common and associated with a family history of AVB and/or sudden cardiac death, suggesting that genetic testing should be a part of the diagnostic workup in these patients to stratify risk and screen family members.
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Affiliation(s)
| | - Tanja Charlotte Frederiksen
- Department of Cardiology Aarhus University Hospital Aarhus Denmark.,Department of Clinical Medicine Health Aarhus University Aarhus Denmark
| | | | | | | | | | | | | | | | - Tommi Bo Lindhardt
- Department of Cardiology Copenhagen University HospitalHerlev and Gentofte Hospital Hellerup Denmark
| | - Morten Böttcher
- Department of Cardiology Regional Hospital Herning Herning Denmark
| | - Stig Molsted
- Department of Clinical Research North Zealand Hospital Hillerød Denmark
| | - Ole Havndrup
- Department of Cardiology Zealand University Hospital Roskilde Denmark
| | | | | | | | | | - Jens Cosedis Nielsen
- Department of Cardiology Aarhus University Hospital Aarhus Denmark.,Department of Clinical Medicine Health Aarhus University Aarhus Denmark
| | - Henning Bundgaard
- Department of Cardiology The Heart Center Rigshospitalet Copenhagen Denmark.,Department of Clinical Medicine University of Copenhagen Denmark
| | - Mette Nygaard
- Department of Biomedicine Health Aarhus University Aarhus Denmark.,Department of Health Science and Technology Aalborg Denmark
| | - Henrik Kjærulf Jensen
- Department of Cardiology Aarhus University Hospital Aarhus Denmark.,Department of Clinical Medicine Health Aarhus University Aarhus Denmark
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15
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Ferreira Tátá C, Massas M, Pinto F, Caçador N, Silva AL. Fabry Disease: A Atypical Presentation. Cureus 2021; 13:e18708. [PMID: 34790463 PMCID: PMC8582620 DOI: 10.7759/cureus.18708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/12/2021] [Indexed: 11/20/2022] Open
Abstract
Fabry Disease (FD) is a rare X-linked recessive disease caused by mutations in the GLA gene that lead to a decrease or lack of activity of the enzyme alpha galactosyl A. This lysosomal storage disorder results in progressive damage and dysfunction of several organs and, depending on the type of mutation and gender of the patient, and it may have different manifestations. As FD is a multisystem disease with a progressive character and varying severity, the diagnosis can be challenging, especially when it comes to non-classical forms. As this is a hereditary disease, its diagnosis impacts not only the patient but also his family, making an accurate and timely diagnosis even more important. We present the case of a 59-years-old man diagnosed with non-classical FD, with previous neurological and psychiatric complaints, who was admitted to the Emergency Department (ED) with a generalized tonic-clonic seizure that required orotracheal intubation for airway protection and transferred to an Intensive Care Unit (ICU).
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Affiliation(s)
| | - Margarida Massas
- Internal Medicine, Hospital do Espírito Santo de Évora, Évora, PRT
| | - Filipa Pinto
- Internal Medicine, Hospital do Espirito Santo de Évora, Évora, PRT
| | - Nuno Caçador
- Radiology • Neuroradiology, Hospital do Espirito Santo de Évora, Évora, PRT
| | - Ana Luisa Silva
- Internal Medicine, Hospital do Espirito Santo de Évora, Évora, PRT
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16
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Hemelsoet D, De Keyser J, Van Heuverswyn F, Willems R, Vandekerckhove H, Bondue A, de Asmundis C, Saenen J, Van de Walle S, Godart P, Kampmann C, Stepman H, Poppe B, Terryn W. Screening for Fabry Disease in Male Patients With Arrhythmia Requiring a Pacemaker or an Implantable Cardioverter-Defibrillator. Circulation 2021; 143:872-874. [PMID: 33617311 DOI: 10.1161/circulationaha.120.051400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Dimitri Hemelsoet
- Departments of Neurology (D.H.), Ghent University Hospital, Belgium.,UD-PrOZA - Program for Undiagnosed Rare Diseases (D.H., B.P., W.T.), Ghent University Hospital, Belgium
| | - Jan De Keyser
- Departments of Cardiology (J.D.K.), Jan Yperman Hospital, Ypres, Belgium
| | | | - Rik Willems
- Department of Cardiovascular Sciences, University of Leuven, Belgium (R.W.)
| | | | - Antoine Bondue
- Department of Cardiology, Cliniques Universitaires de Bruxelles Hôpital Erasme and Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire, Université Libre de Bruxelles, Brussels, Belgium (A.B.)
| | - Carlo de Asmundis
- Department of Cardiology, Brussels University Hospital, Belgium (C.d.A.)
| | - Johan Saenen
- Department of Cardiology, Antwerp University Hospital, Belgium (J.S.)
| | | | - Pascal Godart
- Department of Cardiology, Centre Hospitalier Universitaire Ambroise Paré, Mons, Belgium (P.G.)
| | - Christoph Kampmann
- Department of Cardiology and Inherited Cardiomyopathies, Clinic for Pediatric and Adolescent Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Germany (C.K.)
| | - Hedwig Stepman
- Clinical Biology (H.S.), Ghent University Hospital, Belgium
| | - Bruce Poppe
- UD-PrOZA - Program for Undiagnosed Rare Diseases (D.H., B.P., W.T.), Ghent University Hospital, Belgium.,Center for Medical Genetics (B.P.), Ghent University Hospital, Belgium
| | - Wim Terryn
- UD-PrOZA - Program for Undiagnosed Rare Diseases (D.H., B.P., W.T.), Ghent University Hospital, Belgium.,General Internal Medicine and Nephrology (W.T.), Jan Yperman Hospital, Ypres, Belgium
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17
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Fuller M, Perry R, Saiedi M, Fletcher JM, Selvanayagam JB. Mono-symptomatic Fabry disease in a population with mild-to-moderate left ventricular hypertrophy. Mol Genet Metab Rep 2020; 25:100697. [PMID: 33335842 PMCID: PMC7733018 DOI: 10.1016/j.ymgmr.2020.100697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/04/2020] [Accepted: 12/04/2020] [Indexed: 01/13/2023] Open
Abstract
Fabry disease (FD) results from a deficiency in the exoglycohydrolase, α-galactosidase A (AGA), an enzyme required for the sequential degradation of glycosphingolipids, which consequently accumulate in the lysosomes of affected cells. An X-linked inherited metabolic disorder, FD has a high incidence of a later onset phenotype that is under-diagnosed and under-recognised in adulthood despite the availability of specific treatment. As the first presenting feature in adults is often left ventricular hypertrophy (LVH), we hypothesized that testing patients with an attenuated echocardiographic phenotype of unexplained hypertrophic cardiomyopathy, might identify cases of undiagnosed FD. We employed a simple screening test by measuring AGA activity in dried blood spots collected from a finger-prick of blood in a cohort of 511 individuals aged between 18 and 75 with LVH between 1.2 and 1.5 cm. Two males were identified with AGA activity below the reference interval and subsequent molecular testing confirmed the commonly reported genetic variants, p.Ala143Thr in one individual and p.Asn215Ser, in the other. Additional biochemical measurement of plasma, lyso-Gb1 was normal in both patients. Of the 179 females screened, one individual returned AGA activity slightly below the reference interval but was lost to further follow-up. This pilot study suggests that screening patients with mild-to-moderate LVH of unknown aetiology does indeed identify undiagnosed cases of FD.
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Affiliation(s)
- Maria Fuller
- Genetics and Molecular Pathology, SA Pathology at Women's and Children's Hospital, 72 King William Road, North Adelaide, South Australia 5006, Australia.,Adelaide Medical School, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Rebecca Perry
- College of Medicine, Flinders University of South Australia, Australia.,Department of Cardiovascular Medicine, Flinders Medical Centre, Southern Adelaide Local Health Network, Bedford Park, South Australia 5042, Australia.,Cardiac Imaging Research Group, South Australian Health and Medical Research Institute, Adelaide, South Australia 5000, Australia
| | - Madiha Saiedi
- College of Medicine, Flinders University of South Australia, Australia.,Department of Cardiovascular Medicine, Flinders Medical Centre, Southern Adelaide Local Health Network, Bedford Park, South Australia 5042, Australia
| | - Janice M Fletcher
- Genetics and Molecular Pathology, SA Pathology at Women's and Children's Hospital, 72 King William Road, North Adelaide, South Australia 5006, Australia.,Adelaide Medical School, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Joseph B Selvanayagam
- College of Medicine, Flinders University of South Australia, Australia.,Department of Cardiovascular Medicine, Flinders Medical Centre, Southern Adelaide Local Health Network, Bedford Park, South Australia 5042, Australia.,Cardiac Imaging Research Group, South Australian Health and Medical Research Institute, Adelaide, South Australia 5000, Australia
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18
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Azevedo O, Marques N, Reis L, Cruz I, Craveiro N, Antunes H, Lourenço C, Gomes R, Guerreiro RA, Faria R, Sá F, Lima R, Gaspar P, Faria R, Miltenberger-Miltenyi G, Sousa N, Cunha D. Predictors of Fabry disease in patients with hypertrophic cardiomyopathy: How to guide the diagnostic strategy? Am Heart J 2020; 226:114-126. [PMID: 32531501 DOI: 10.1016/j.ahj.2020.04.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 04/12/2020] [Indexed: 01/19/2023]
Abstract
BACKGROUND Fabry disease (FD) is a treatable cause of hypertrophic cardiomyopathy (HCM). We aimed to determine the independent predictors of FD and to define a clinically useful strategy to discriminate FD among HCM. METHODS Multicenter study including 780 patients with the ESC definition of HCM. FD screening was performed by enzymatic assay in males and genetic testing in females. Multivariate regression analysis identified independent predictors of FD in HCM. A discriminant function analysis defined a score based on the weighted combination of these predictors. RESULTS FD was found in 37 of 780 patients with HCM (4.7%): 31 with p.F113L mutation due to a founder effect; and 6 with other variants (p.C94S; p.M96V; p.G183V; p.E203X; p.M290I; p.R356Q/p.G360R). FD prevalence in HCM adjusted for the founder effect was 0.9%. Symmetric HCM (OR 3.464, CI95% 1.151-10.430), basal inferolateral late gadolinium enhancement (LGE) (OR 10.677, CI95% 3.633-31.380), bifascicular block (OR 10.909, CI95% 2.377-50.059) and ST-segment depression (OR 4.401, CI95% 1.431-13.533) were independent predictors of FD in HCM. The score ID FABRY-HCM [-0.729 + (2.781xBifascicular block) + (0.590xST depression) + (0.831xSymmetric HCM) + (2.130xbasal inferolateral LGE)] had a negative predictive value of 95.8% for FD, with a cut-off of 1.0, meaning that, in the absence of both bifascicular block and basal inferolateral LGE, FD is a less probable cause of HCM, being more appropriate to perform HCM gene panel than targeted FD screening. CONCLUSION FD prevalence in HCM was 0.9%. Bifascicular block and basal inferolateral LGE were the most powerful predictors of FD in HCM. In their absence, HCM gene panel is the most appropriate step in etiological study of HCM.
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19
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Affiliation(s)
- Catherine M Otto
- Division of Cardiology, University of Washington, Seattle, WA 98195, USA
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20
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Affiliation(s)
- Maria Fuller
- Genetics and Molecular Pathology, SA Pathology at Women's and Children's Hospital, North Adelaide, South Australia, Australia
| | - Atul Mehta
- Haematology, Royal Free Hospital, London, UK
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