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Nowicki M, Bazan-Socha S, Błażejewska-Hyżorek B, Kłopotowski MM, Komar M, Kusztal MA, Liberek T, Małyszko J, Mizia-Stec K, Oko-Sarnowska Z, Pawlaczyk K, Podolec P, Sławek J. A review and recommendations for oral chaperone therapy in adult patients with Fabry disease. Orphanet J Rare Dis 2024; 19:16. [PMID: 38238782 PMCID: PMC10797794 DOI: 10.1186/s13023-024-03028-w] [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: 06/08/2023] [Accepted: 01/11/2024] [Indexed: 01/22/2024] Open
Abstract
Fabry disease (FD) is a rare, X-linked lysosomal storage disorder affecting both males and females caused by genetic abnormalities in the gene encoding the enzyme α-galactosidase A. FD-affected patients represent a highly variable clinical course with first symptoms already appearing in young age. The disease causes a progressive multiple organ dysfunction affecting mostly the heart, kidneys and nervous system, eventually leading to premature death. Disease-specific management of FD includes enzyme replacement therapy with agalsidase α and β or pharmacological oral chaperone migalastat. Migalastat is a low-molecular-mass iminosugar, that reversibly binds to active site of amenable enzyme variants, stabilizing their molecular structure and improving trafficking to the lysosome. Migalastat was approved in the EU in 2016 and is an effective therapy in the estimated 35-50% of all patients with FD with amenable GLA gene variants. This position statement is the first comprehensive review in Central and Eastern Europe of the current role of migalastat in the treatment of FD. The statement provides an overview of the pharmacology of migalastat and summarizes the current evidence from the clinical trial program regarding the safety and efficacy of the drug and its effects on organs typically involved in FD. The position paper also includes a practical guide for clinicians on the optimal selection of patients with FD who will benefit from migalastat treatment, recommendations on the optimal selection of diagnostic tests and the use of tools to identify patients with amenable GLA mutations. Areas for future migalastat clinical research have also been identified.
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Affiliation(s)
- Michał Nowicki
- Department of Nephrology, Hypertension and Kidney Transplantation, Central University Hospital, Medical University of Lodz, Pomorska 251, 92-213, Lodz, Poland.
| | - Stanisława Bazan-Socha
- Department of Internal Medicine, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland
| | | | - Mariusz M Kłopotowski
- Department of Interventional Cardiology and Angiology, Cardinal Wyszynski National Institute of Cardiology-National Research Institute, Warsaw, Poland
| | - Monika Komar
- Department of Cardiac and Vascular Diseases, Institute of Cardiology, Jagiellonian University Medical College, Kraków, Poland
| | - Mariusz A Kusztal
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wroclaw, Poland
| | - Tomasz Liberek
- Department of Nephrology, Transplantology and Internal Medicine, Medical University of Gdańsk, Gdańsk, Poland
| | - Jolanta Małyszko
- Department of Nephrology, Dialysis and Internal Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Katarzyna Mizia-Stec
- First Department of Cardiology, Faculty of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
| | - Zofia Oko-Sarnowska
- 1st Department of Cardiology, Poznan University of Medical Sciences, Poznan, Poland
| | - Krzysztof Pawlaczyk
- Department of Nephrology, Transplantology and Internal Medicine, Poznań University of Medical Sciences, Poznan, Poland
| | - Piotr Podolec
- Department of Cardiac and Vascular Diseases, Institute of Cardiology, Jagiellonian University Medical College, Kraków, Poland
| | - Jarosław Sławek
- Department of Neurological-Psychiatric Nursing, Department of Neurology and Stroke, Faculty of Health Sciences, St. Adalbert Hospital, Medical University of Gdansk, Gdańsk, Poland
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Al-Obaide MA, Islam S, Al-Obaidi I, Vasylyeva TL. Novel enhancer mediates the RPL36A-HNRNPH2 readthrough loci and GLA gene expressions associated with fabry disease. Front Genet 2023; 14:1229088. [PMID: 38155709 PMCID: PMC10753776 DOI: 10.3389/fgene.2023.1229088] [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: 05/25/2023] [Accepted: 11/10/2023] [Indexed: 12/30/2023] Open
Abstract
Fabry disease (FD) is a rare genetic condition caused by mutations in the GLA gene, located on the X chromosome in the RPL36-HNRNPH2 readthrough genomic region. This gene produces an enzyme called alpha-galactosidase A (α-Gal A). When the enzyme does not function properly due to the mutations, it causes harmful substances called globotriaosylceramide (Gb3) and globotriaosylsphingosine (lyso-Gb3) to build up in the body's lysosomes. This accumulation can damage the kidneys, heart, eyes, and nervous system. Recent studies have shown that the RPL36A-HNRNPH2 readthrough loci, which include RPL36A and HNRNPH2 genes, as well as the regulatory sequence known as the GLA-HNRNPH2 bidirectional promoter, may also play a role in FD. However, the involvement of enhancer RNAs (eRNAs) in FD is still poorly understood despite their known role in various diseases. To investigate this further, we studied an RPL36A enhancer called GH0XJ101390 and showed its genomic setting in the RPL36-HNRNPH2 readthrough region; the eRNA is rich in Homotypic Clusters of TFBSs (HCTs) type and hosts a CpG Island (CGI). To test the functional correlation further with GLA, RPL36A, and HNRNPH2, we used siRNAs to knock down GH0XJ101390 in human kidney embryonic cells 293T. The results showed a significant decrease in RPL36A and GLA expression and a non-significant decrease in HNRNPH2 expression. These findings could have important implications for understanding the regulatory mechanisms of GH0XJ101390 and its potential role in FD. A better understanding of these mechanisms may improve diagnostic and therapeutic methods for FD, which could ultimately benefit patients with this rare condition.
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Affiliation(s)
| | | | | | - Tetyana L. Vasylyeva
- Department of Pediatrics, Texas Tech University Health Sciences Center, Amarillo, TX, United States
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Shimohata H, Yamashita M, Yamada K, Hirayama K, Kobayashi M. Treatment of Fabry Nephropathy: A Literature Review. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1478. [PMID: 37629768 PMCID: PMC10456687 DOI: 10.3390/medicina59081478] [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: 07/10/2023] [Revised: 08/01/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023]
Abstract
Fabry disease is an X-linked inherited lysosomal storage disorder with a deficiency of α-galactosidase A activity, which results in the intracellular accumulation of globotriaosylceramide (Gb3) and related glycosphingolipids in various organs. Fabry nephropathy is one of the major complications of Fabry disease, and kidney damage is often related to cardiovascular disease and mortality. The treatment of Fabry nephropathy thus helps prolong life expectancy. Two treatment options for Fabry nephropathy and cardiopathy are now commercially available: enzyme replacement therapy (agalsidase α agalsidase β, and a biosimilar of agalsidase β) and pharmacological chaperone therapy (migalastat). In this review, we summarize the efficacy of these treatment options for Fabry nephropathy with respect to renal function, proteinuria, and renal pathological findings. We also describe the importance of adjunctive therapy for Fabry nephropathy.
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Affiliation(s)
- Homare Shimohata
- Department of Nephrology, Tokyo Medical University Ibaraki Medical Center, Ami 300-0395, Ibaraki, Japan (K.H.)
- Tsuchiura Beryl Clinic, Tsuchiura 300-0062, Ibaraki, Japan
| | - Marina Yamashita
- Department of Nephrology, Tokyo Medical University Ibaraki Medical Center, Ami 300-0395, Ibaraki, Japan (K.H.)
| | - Kota Yamada
- Tsuchiura Beryl Clinic, Tsuchiura 300-0062, Ibaraki, Japan
| | - Kouichi Hirayama
- Department of Nephrology, Tokyo Medical University Ibaraki Medical Center, Ami 300-0395, Ibaraki, Japan (K.H.)
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Keyzor I, Shohet S, Castelli J, Sitaraman S, Veleva-Rotse B, Weimer JM, Fox B, Willer T, Tuske S, Crathorne L, Belzar KJ. Therapeutic Role of Pharmacological Chaperones in Lysosomal Storage Disorders: A Review of the Evidence and Informed Approach to Reclassification. Biomolecules 2023; 13:1227. [PMID: 37627292 PMCID: PMC10452329 DOI: 10.3390/biom13081227] [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: 06/20/2023] [Revised: 07/21/2023] [Accepted: 07/26/2023] [Indexed: 08/27/2023] Open
Abstract
The treatment landscape for lysosomal storage disorders (LSDs) is rapidly evolving. An increase in the number of preclinical and clinical studies in the last decade has demonstrated that pharmacological chaperones are a feasible alternative to enzyme replacement therapy (ERT) for individuals with LSDs. A systematic search was performed to retrieve and critically assess the evidence from preclinical and clinical applications of pharmacological chaperones in the treatment of LSDs and to elucidate the mechanisms by which they could be effective in clinical practice. Publications were screened according to the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) reporting guidelines. Fifty-two articles evaluating 12 small molecules for the treatment of seven LSDs are included in this review. Overall, a substantial amount of preclinical and clinical data support the potential of pharmacological chaperones as treatments for Fabry disease, Gaucher disease, and Pompe disease. Most of the available clinical evidence evaluated migalastat for the treatment of Fabry disease. There was a lack of consistency in the terminology used to describe pharmacological chaperones in the literature. Therefore, the new small molecule chaperone (SMC) classification system is proposed to inform a standardized approach for new, emerging small molecule therapies in LSDs.
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Affiliation(s)
- Ian Keyzor
- Amicus Therapeutics Ltd., Marlow SL7 1HZ, UK
| | | | | | | | | | | | - Brian Fox
- Amicus Therapeutics Inc., Princeton, NJ 08542, USA
| | - Tobias Willer
- Amicus Therapeutics Inc., Philadelphia, PA 19104, USA
| | - Steve Tuske
- Amicus Therapeutics Inc., Philadelphia, PA 19104, USA
| | - Louise Crathorne
- Prescript Communications Ltd., Letchworth Garden City SG6 3TA, UK
| | - Klara J. Belzar
- Prescript Communications Ltd., Letchworth Garden City SG6 3TA, UK
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Gatterer C, Beitzke D, Graf S, Lenz M, Sunder-Plassmann G, Mann C, Ponleitner M, Manka R, Fritschi D, Krayenbuehl PA, Kamm P, Dormond O, Barbey F, Monney P, Nowak A. Long-Term Monitoring of Cardiac Involvement under Migalastat Treatment Using Magnetic Resonance Tomography in Fabry Disease. Life (Basel) 2023; 13:life13051213. [PMID: 37240859 DOI: 10.3390/life13051213] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/02/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Background: Fabry cardiomyopathy is characterized by left ventricular hypertrophy, myocardial fibrosis, arrhythmia, and premature death. Treatment with migalastat, an oral pharmacological chaperone, was associated with a stabilization of cardiac biomarkers and a reduction in left ventricular mass index, as measured by echocardiography. A recent study, using cardiac magnetic resonance (CMR) as the gold standard, found a stable course of myocardial involvement after 18 months of treatment with migalastat. Our study aimed to provide long-term CMR data for the treatment with migalastat. Methods: A total of 11 females and four males with pathogenic amenable GLA mutations were treated with migalastat and underwent 1.5T CMR imaging for routine treatment effect monitoring. The main outcome was a long-term myocardial structural change, reflected by CMR. Results: After migalastat treatment initiation, left ventricular mass index, end diastolic volume, interventricular septal thickness, posterior wall thickness, estimated glomerular filtration rate, and plasma lyso-Gb3 remained stable during the median follow-up time of 34 months (min.: 25; max.: 47). The T1 relaxation times, reflecting glycosphingolipid accumulation and subsequent processes up to fibrosis, fluctuated over the time without a clear trend. No new onset of late gadolinium enhancement (LGE) areas, reflecting local fibrosis or scar formation of the myocardium, could be detected. However, patients with initially present LGE showed an increase in LGE as a percentage of left ventricular mass. The median α-galactosidase A enzymatic activity increased from 37.3% (IQR 5.88-89.3) to 105% (IQR 37.2-177) of the lower limit of the respective reference level (p = 0.005). Conclusion: Our study confirms an overall stable course of LVMi in patients with FD, treated with migalastat. However, individual patients may experience disease progression, especially those who present with fibrosis of the myocardium already at the time of therapy initiation. Thus, a regular treatment re-evaluation including CMR is needed to provide the optimal management for each patient.
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Affiliation(s)
- Constantin Gatterer
- Department of Medicine II, Division of Cardiology, Medical University of Vienna, 1090 Vienna, Austria
| | - Dietrich Beitzke
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, 1090 Vienna, Austria
| | - Senta Graf
- Department of Medicine II, Division of Cardiology, Medical University of Vienna, 1090 Vienna, Austria
| | - Max Lenz
- Department of Medicine II, Division of Cardiology, Medical University of Vienna, 1090 Vienna, Austria
| | - Gere Sunder-Plassmann
- Department of Medicine III, Division of Nephrology and Dialysis, Medical University of Vienna, 1090 Vienna, Austria
| | - Christopher Mann
- Department of Medicine II, Division of Cardiology, Medical University of Vienna, 1090 Vienna, Austria
| | - Markus Ponleitner
- Department of Neurology, Medical University of Vienna, 1090 Vienna, Austria
| | - Robert Manka
- Institute of Diagnostic and Interventional Radiology and Department of Cardiology, University Hospital Zurich, University of Zurich, 8091 Zurich, Switzerland
| | - Daniel Fritschi
- University Heart Center, University Hospital Zurich, 8091 Zurich, Switzerland
| | - Pierre-Alexandre Krayenbuehl
- Department of Endocrinology and Clinical Nutrition, University Hospital Zurich and University of Zurich, 8091 Zurich, Switzerland
| | - Philipp Kamm
- Radiology Department, Spital Langenthal, 4900 Langenthal, Switzerland
| | - Olivier Dormond
- Department of Immunology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne, 1011 Lausanne, Switzerland
| | - Frédéric Barbey
- Department of Immunology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne, 1011 Lausanne, Switzerland
| | - Pierre Monney
- Department of Cardiology, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne, 1011 Lausanne, Switzerland
| | - Albina Nowak
- Department of Endocrinology and Clinical Nutrition, University Hospital Zurich and University of Zurich, 8091 Zurich, Switzerland
- Division of Internal Medicine, Psychiatric University Hospital Zurich, 8008 Zurich, Switzerland
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Fabry Disease: Switch from Enzyme Replacement Therapy to Oral Chaperone Migalastat: What Do We Know Today? Healthcare (Basel) 2023; 11:healthcare11040449. [PMID: 36832983 PMCID: PMC9957019 DOI: 10.3390/healthcare11040449] [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: 11/22/2022] [Revised: 01/13/2023] [Accepted: 01/22/2023] [Indexed: 02/08/2023] Open
Abstract
Fabry disease is a lysosomal storage disorder caused by the deficiency of the α-galactosidase-A enzyme. The result is the progressive accumulation of complex glycosphingolipids and cellular dysfunction. Cardiac, renal, and neurological involvement significantly reduces life expectancy. Currently, there is increasing evidence that clinical response to treatment improves with early and timely initiation. Until a few years ago, treatment options for Fabry disease were limited to enzyme replacement therapy with agalsidase alfa or beta administered by intravenous infusion every 2 weeks. Migalastat (Galafold®) is an oral pharmacological chaperone that increases the enzyme activity of "amenable" mutations. The safety and efficacy of migalastat were supported in the phase III FACETS and ATTRACT studies, compared to available enzyme replacement therapies, showing a reduction in left ventricular mass, and stabilization of kidney function and plasma Lyso-Gb3. Similar results were confirmed in subsequent extension publications, both in patients who started migalastat as their first treatment and in patients who were previously on enzyme replacement therapy and switched to migalastat. In this review we describe the safety and efficacy of switching from enzyme replacement therapy to migalastat in patients with Fabry disease and "amenable" mutations, referring to publications available to date.
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Palaiodimou L, Kokotis P, Zompola C, Papagiannopoulou G, Bakola E, Papadopoulou M, Zouvelou V, Petras D, Vlachopoulos C, Tsivgoulis G. Fabry Disease: Current and Novel Therapeutic Strategies. A Narrative Review. Curr Neuropharmacol 2023; 21:440-456. [PMID: 35652398 PMCID: PMC10207921 DOI: 10.2174/1570159x20666220601124117] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 05/11/2022] [Accepted: 05/20/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Fabry disease (FD) is an inherited lysosomal storage disorder, leading to multisystemic manifestations and causing significant morbidity and mortality. OBJECTIVE The aim of this narrative review is to present the current and novel therapeutic strategies in FD, including symptomatic and specific treatment options. METHODS A systematic literature search was conducted to identify relevant studies, including completed and ongoing randomized-controlled clinical trials (RCTs), prospective or retrospective cohort studies, case series and case reports that provided clinical data regarding FD treatment. RESULTS A multidisciplinary symptomatic treatment is recommended for FD patients, personalized according to disease manifestations and their severity. During the last two decades, FD-specific treatments, including two enzyme-replacement-therapies (agalsidase alfa and agalsidase beta) and chaperone treatment with migalastat have been approved for use and allowed for symptoms' stabilization or even disease burden reduction. More therapeutic agents are currently under investigation. Substrate reduction therapies, including lucerastat and venglustat, have shown promising results in RCTs and may be used either as monotherapy or as complementary therapy to established enzymereplacement- therapies. More stable enzyme-replacement-therapy molecules that are associated with less adverse events and lower likelihood of neutralizing antibodies formation have also been developed. Ex-vivo and in-vivo gene therapy is being tested in animal models and pilot human clinical trials, with preliminary results showing a favorable safety and efficacy profile. CONCLUSION The therapeutic landscape in FD appears to be actively expanding with more treatment options expected to become available in the near future, allowing for a more personalized approach in FD patients.
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Affiliation(s)
- Lina Palaiodimou
- Second Department of Neurology, “Attikon” University Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Panagiotis Kokotis
- First Department of Neurology, National and Kapodistrian University of Athens, School of Medicine, Eginition Hospital, Athens, Greece
| | - Christina Zompola
- Second Department of Neurology, “Attikon” University Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Georgia Papagiannopoulou
- Second Department of Neurology, “Attikon” University Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Eleni Bakola
- Second Department of Neurology, “Attikon” University Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Marianna Papadopoulou
- Second Department of Neurology, “Attikon” University Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Vasiliki Zouvelou
- First Department of Neurology, National and Kapodistrian University of Athens, School of Medicine, Eginition Hospital, Athens, Greece
| | - Dimitrios Petras
- Nephrology Department, Hippokration General Hospital, Athens, Greece
| | | | - Georgios Tsivgoulis
- Second Department of Neurology, “Attikon” University Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
- Department of Neurology, University of Tennessee Health Science Center, Memphis, TN, USA
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Systematic cascade screening in the Danish Fabry Disease Centre: 20 years of a national single-centre experience. PLoS One 2022; 17:e0277767. [PMID: 36383556 PMCID: PMC9668118 DOI: 10.1371/journal.pone.0277767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 11/02/2022] [Indexed: 11/17/2022] Open
Abstract
The lysosomal storage disorder Fabry disease is caused by deficient or absent activity of the GLA gene enzyme α-galactosidase A. In the present study we present the molecular and biochemical data of the Danish Fabry cohort and report 20 years' (2001-2020) experience in cascade genetic screening at the Danish National Fabry Disease Center. The Danish Fabry cohort consisted of 26 families, 18 index patients (9 males and 9 females, no available data for 8 index-patients) and 97 family members with a pathogenic GLA variant identified by cascade genetic testing (30 males and 67 females). Fourteen patients (5 males and 9 females; mean age of death 47.0 and 64.8 years respectively) died during follow-up. The completeness of the Fabry patient identification in the country has resulted in a cohort of balanced genotypes according to gender (twice number of females compared to males), indicating that the cohort was not biased by referral, and further resulted in earlier diagnosis of the disease by a lower age at diagnosis in family members compared to index-patients (mean age at diagnosis: index-patients 42.2 vs. family members 26.0 years). Six previously unreported disease-causing variants in the GLA gene were discovered. The nationwide screening and registration of Fabry disease families provide a unique possibility to establish a complete cohort of Fabry patients and to advance current knowledge of this inherited rare lysosomal storage disorder.
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Weidemann F, Jovanovic A, Herrmann K, Vardarli I. Chaperone Therapy in Fabry Disease. Int J Mol Sci 2022; 23:ijms23031887. [PMID: 35163813 PMCID: PMC8836454 DOI: 10.3390/ijms23031887] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 02/01/2023] Open
Abstract
Fabry disease is an X-linked lysosomal multisystem storage disorder induced by a mutation in the alpha-galactosidase A (GLA) gene. Reduced activity or deficiency of alpha-galactosidase A (AGAL) leads to escalating storage of intracellular globotriaosylceramide (GL-3) in numerous organs, including the kidneys, heart and nerve system. The established treatment for 20 years is intravenous enzyme replacement therapy. Lately, oral chaperone therapy was introduced and is a therapeutic alternative in patients with amenable mutations. Early starting of therapy is essential for long-term improvement. This review describes chaperone therapy in Fabry disease.
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Affiliation(s)
- Frank Weidemann
- Department of Medicine I, Klinikum Vest GmbH, Knappschaftskrankenhaus Recklinghausen, Academic Teaching Hospital, Ruhr-University Bochum, 45657 Recklinghausen, Germany;
| | - Ana Jovanovic
- The Mark Holland Metabolic Unit, Nothern Care Alliance NHS Foundation Trust, Salford M6 8HD, UK;
| | - Ken Herrmann
- Department of Nuclear Medicine, University Hospital Essen, 45147 Essen, Germany;
| | - Irfan Vardarli
- Department of Medicine I, Klinikum Vest GmbH, Knappschaftskrankenhaus Recklinghausen, Academic Teaching Hospital, Ruhr-University Bochum, 45657 Recklinghausen, Germany;
- Correspondence: ; Tel.: +49-2361-563403
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The New Pharmacological Chaperones PBXs Increase α-Galactosidase A Activity in Fabry Disease Cellular Models. Biomolecules 2021; 11:biom11121856. [PMID: 34944500 PMCID: PMC8699827 DOI: 10.3390/biom11121856] [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: 10/30/2021] [Revised: 12/04/2021] [Accepted: 12/07/2021] [Indexed: 11/17/2022] Open
Abstract
Fabry disease is an X-linked multisystemic disorder caused by the impairment of lysosomal α-Galactosidase A, which leads to the progressive accumulation of glycosphingolipids and to defective lysosomal metabolism. Currently, Fabry disease is treated by enzyme replacement therapy or the orally administrated pharmacological chaperone Migalastat. Both therapeutic strategies present limitations, since enzyme replacement therapy has shown low half-life and bioavailability, while Migalastat is only approved for patients with specific mutations. The aim of this work was to assess the efficacy of PBX galactose analogues to stabilize α-Galactosidase A and therefore evaluate their potential use in Fabry patients with mutations that are not amenable to the treatment with Migalastat. We demonstrated that PBX compounds are safe and effective concerning stabilization of α-Galactosidase A in relevant cellular models of the disease, as assessed by enzymatic activity measurements, molecular modelling, and cell viability assays. This experimental evidence suggests that PBX compounds are promising candidates for the treatment of Fabry disease caused by mutations which affect the folding of α-Galactosidase A, even for GLA variants that are not amenable to the treatment with Migalastat.
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Mahoney R, Lee GK, Zepeda JP, Gabriel C, Hall K, Edwards R, Kimonis V. Severe manifestations and treatment of COVID-19 in a transplanted patient with Fabry disease. Mol Genet Metab Rep 2021; 29:100802. [PMID: 34545322 PMCID: PMC8443332 DOI: 10.1016/j.ymgmr.2021.100802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/11/2021] [Accepted: 09/11/2021] [Indexed: 01/08/2023] Open
Abstract
Fabry disease is an X linked disease caused by pathogenic variants in the GLA gene. The cardiovascular and renal systems are most affected in Fabry patients and may require heart or kidney transplants in the late stages of the disease depending on severity of manifestations. Enzyme replacement therapy (ERT) has proven to delay progression of Fabry disease considerably, especially when started early in life. Current research has shown that individuals who have received cardiac or renal transplants or are currently on dialysis have the greatest probability of developing severe manifestations of COVID-19. It has also been shown that people who contract COVID-19 experience a rapid increase in cytokine levels which can lead to a prothrombotic state and have a greater risk in the presence of comorbidities. A history of cardiac or renal transplants as well as the naturally elevated cytokine levels in Fabry disease make it likely that COVID-19 could have a greater impact on the health of these patients. We report the case of a 67-year-old male with diabetes mellitus, history of kidney transplant, and Fabry disease treated late in progression of the disease first with agalsidase beta ERT, then oral migalastat who developed severe manifestations of COVID-19. The autopsy findings showed acute and organizing hyaline membrane disease consistent with COVID-19 pneumonia and secondary invasive bronchopulmonary aspergillosis with cavitary lesion formation. The sections of the heart showed scattered subendocardial fibrosis, and the transplanted kidneys showed thyroidization and interstitial nephritis potentially secondary to COVID-19, in addition to his long-standing renal disease. This case report serves to chronicle complications in a complex patient with late stage Fabry disease and multiple COVID-19 related complications who succumbed from respiratory failure despite the advanced management for the COVID-19 infection.
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Affiliation(s)
- Ryan Mahoney
- Division of Genetics and Genomic Medicine, Department of Pediatrics, University of California, Irvine, CA, USA
| | - Grace K Lee
- Division of Genetics and Genomic Medicine, Department of Pediatrics, University of California, Irvine, CA, USA
| | | | - Christopher Gabriel
- Department of Psychiatry & Human Behavior, University of California, Irvine, CA, USA
| | - Kathy Hall
- Division of Genetics and Genomic Medicine, Department of Pediatrics, University of California, Irvine, CA, USA
| | - Rob Edwards
- Department of Pathology, University of California, Irvine, CA, USA
| | - Virginia Kimonis
- Division of Genetics and Genomic Medicine, Department of Pediatrics, University of California, Irvine, CA, USA
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