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Jovanovic A, Miller-Hodges E, Castriota F, Takyar S, Howitt H, Ayodele O. A systematic literature review on the health-related quality of life and economic burden of Fabry disease. Orphanet J Rare Dis 2024; 19:181. [PMID: 38689282 PMCID: PMC11062018 DOI: 10.1186/s13023-024-03131-y] [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: 03/14/2023] [Accepted: 03/03/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND Fabry disease (FD) is a rare lysosomal storage disease associated with glycolipid accumulation that impacts multiple physiological systems. We conducted a systematic literature review (SLR) to characterize the humanistic (quality of life [QoL]) and economic burden of FD. METHODS Searches were conducted in the Embase, MEDLINE®, and MEDLINE® In-Process databases from inception to January 19, 2022. Conference abstracts of specified congresses were manually searched. Additional searches were performed in the Cochrane and ProQuest databases for the humanistic SLR and the National Health Service Economic Evaluations Database for the economic SLR. Studies of patients with FD of any sex, race, and age, and published in the English language were included. There was no restriction on intervention or comparator. For the humanistic SLR, studies that reported utility data, database/registry-based studies, questionnaires/surveys, and cohort studies were included. For the economic SLR, studies reporting economic evaluations or assessing the cost of illness and resource use were included. RESULTS Of the 1363 records identified in the humanistic search, 36 studies were included. The most commonly used QoL assessments were the 36-item Short-Form Health Survey (n = 16), EQ-5D questionnaire descriptive system or visual analog scale (n = 9), and the Brief Pain Inventory (n = 8). Reduced QoL was reported in patients with FD compared with healthy populations across multiple domains, including pain, physical functioning, and depressive symptoms. Multiple variables-including sex, age, disease severity, and treatment status-impacted QoL. Of the 711 records identified in the economic burden search, 18 studies were included. FD was associated with high cost and healthcare resource use. Contributors to the cost burden included enzyme replacement therapy, healthcare, and social care. In the seven studies that reported health utility values, lower utility scores were generally associated with more complications (including cardiac, renal, and cerebrovascular morbidities) and with classical disease in males. CONCLUSION FD remains associated with a high cost and healthcare resource use burden, and reduced QoL compared with healthy populations. Integrating information from QoL and economic assessments may help to identify interventions that are likely to be of most value to patients with FD.
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Affiliation(s)
- Ana Jovanovic
- The Mark Holland Metabolic Unit, Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - Eve Miller-Hodges
- Centre for Cardiovascular Science, Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
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Moynihan D, Monaco S, Ting TW, Narasimhalu K, Hsieh J, Kam S, Lim JY, Lim WK, Davila S, Bylstra Y, Balakrishnan ID, Heng M, Chia E, Yeo KK, Goh BK, Gupta R, Tan T, Baynam G, Jamuar SS. Cluster analysis and visualisation of electronic health records data to identify undiagnosed patients with rare genetic diseases. Sci Rep 2024; 14:5056. [PMID: 38424111 PMCID: PMC10904843 DOI: 10.1038/s41598-024-55424-8] [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: 11/01/2023] [Accepted: 02/23/2024] [Indexed: 03/02/2024] Open
Abstract
Rare genetic diseases affect 5-8% of the population but are often undiagnosed or misdiagnosed. Electronic health records (EHR) contain large amounts of data, which provide opportunities for analysing and mining. Data mining, in the form of cluster analysis and visualisation, was performed on a database containing deidentified health records of 1.28 million patients across 3 major hospitals in Singapore, in a bid to improve the diagnostic process for patients who are living with an undiagnosed rare disease, specifically focusing on Fabry Disease and Familial Hypercholesterolaemia (FH). On a baseline of 4 patients, we identified 2 additional patients with potential diagnosis of Fabry disease, suggesting a potential 50% increase in diagnosis. Similarly, we identified > 12,000 individuals who fulfil the clinical and laboratory criteria for FH but had not been diagnosed previously. This proof-of-concept study showed that it is possible to perform mining on EHR data albeit with some challenges and limitations.
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Affiliation(s)
| | | | - Teck Wah Ting
- Genetics Service, Department of Paediatrics, KK Women's and Children's Hospital, 100 Bukit Timah Road, Singapore, 229899, Singapore
- SingHealth Duke-NUS Genomic Medicine Centre, Singapore, Singapore
| | - Kaavya Narasimhalu
- SingHealth Duke-NUS Genomic Medicine Centre, Singapore, Singapore
- Department of Neurology, National Neuroscience Institute (Singapore General Hospital), Singapore, Singapore
| | - Jenny Hsieh
- SingHealth Duke-NUS Genomic Medicine Centre, Singapore, Singapore
- Department of Internal Medicine, Singapore General Hospital, Singapore, Singapore
| | - Sylvia Kam
- Genetics Service, Department of Paediatrics, KK Women's and Children's Hospital, 100 Bukit Timah Road, Singapore, 229899, Singapore
- SingHealth Duke-NUS Genomic Medicine Centre, Singapore, Singapore
| | - Jiin Ying Lim
- Genetics Service, Department of Paediatrics, KK Women's and Children's Hospital, 100 Bukit Timah Road, Singapore, 229899, Singapore
- SingHealth Duke-NUS Genomic Medicine Centre, Singapore, Singapore
| | - Weng Khong Lim
- SingHealth Duke-NUS Genomic Medicine Centre, Singapore, Singapore
- SingHealth Duke-NUS Institute of Precision Medicine, Singapore, Singapore
- Cancer & Stem Cell Biology Program, Duke-NUS Medical School, Singapore, Singapore
- Laboratory of Genome Variation Analytics, Genome Institute of Singapore, Singapore, Singapore
| | - Sonia Davila
- SingHealth Duke-NUS Genomic Medicine Centre, Singapore, Singapore
- SingHealth Duke-NUS Institute of Precision Medicine, Singapore, Singapore
| | - Yasmin Bylstra
- SingHealth Duke-NUS Genomic Medicine Centre, Singapore, Singapore
- SingHealth Duke-NUS Institute of Precision Medicine, Singapore, Singapore
| | - Iswaree Devi Balakrishnan
- SingHealth Duke-NUS Genomic Medicine Centre, Singapore, Singapore
- National Heart Centre Singapore, Singapore, Singapore
| | - Mark Heng
- SingHealth Office of Insights and Analytics, Singapore, Singapore
| | - Elian Chia
- SingHealth Office of Insights and Analytics, Singapore, Singapore
| | | | - Bee Keow Goh
- Data Analytics Office, KK Women's and Children's Hospital, Singapore, Singapore
| | | | - Tele Tan
- Curtin University, Perth, Australia
| | - Gareth Baynam
- Rare Care Centre, Perth Children's Hospital, Perth, WA, Australia
- Western Australian Register of Developmental Anomalies, Perth, WA, Australia
| | - Saumya Shekhar Jamuar
- Genetics Service, Department of Paediatrics, KK Women's and Children's Hospital, 100 Bukit Timah Road, Singapore, 229899, Singapore.
- SingHealth Duke-NUS Genomic Medicine Centre, Singapore, Singapore.
- SingHealth Duke-NUS Institute of Precision Medicine, Singapore, Singapore.
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Yang A, Kim S, Choi YJ. Impact of Nontreatment Duration and Keratopathy on Major Adverse Cardiovascular Events in Fabry Disease: A Nationwide Cohort Study. J Clin Med 2024; 13:479. [PMID: 38256613 PMCID: PMC10817061 DOI: 10.3390/jcm13020479] [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: 12/17/2023] [Revised: 01/11/2024] [Accepted: 01/14/2024] [Indexed: 01/24/2024] Open
Abstract
Fabry disease (FD) is a rare inherited X-linked lysosomal storage disorder that results in the progressive accumulation of glycosphingolipids in multiple organs. Early FD-specific treatments may improve clinical outcomes; however, clinical evidence about early FD treatment is limited. We aimed to determine the cardiovascular outcomes of patients with FD who received enzyme replacement therapy. This nationwide observational study was conducted using the National Health Claims database of the Korean population with FD. The primary outcome was major adverse cardiovascular events (MACEs). MACE risk factors in FD were evaluated using time-dependent Cox regression. Between January 2007 and April 2022, 188 patients with FD were analyzed. Among them, 22 (11.7%) experienced MACE (males: 14/95 [14.7%]; females: 8/93 [8.6%]). The mean age at MACE diagnosis was 53.5 ± 11.0 years in all patients with FD, which was lower in males compared with in females (49.7 ± 9.6 vs. 60.0 ± 10.7 years, p = 0.030). Multivariate analysis (HR, 95% CI) revealed that age (1.042; 1.004-1.082) and duration of FD nontreatment (1.040; 1.003-1.078) were significant MACE risk factors in all patients. In males, age (1.080; 1.032-1.131), FD nontreatment duration (1.099; 1.048-1.152), and keratopathy (18.920; 4.174-85.749) were significant MACE risk factors in multivariate analysis. In females, the only significant MACE risk factor was a high Charlson comorbidity index score (1.795; 1.229-2.622). In conclusion, duration of FD nontreatment and keratopathy are significant MACE risk factors in males with FD. These findings suggest the importance of early initiation of FD-specific treatment and careful evaluation of keratopathy in males with FD.
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Affiliation(s)
- Aram Yang
- Department of Pediatrics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Republic of Korea;
| | - Sinae Kim
- Biostatistics Collaboration Team, Research Core Center, National Cancer Center, Goyang 10408, Republic of Korea;
| | - Yong Jun Choi
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 04763, Republic of Korea
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Nicholls K, Denaro C, Tchan M, Ellaway C, Bratkovic D, Campbell S, Fookes M, Thomas M. Fabry-specific treatment in Australia: time to align eligibility criteria with international best practices. Intern Med J 2024. [PMID: 38212950 DOI: 10.1111/imj.16327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 12/20/2023] [Indexed: 01/13/2024]
Abstract
BACKGROUND Disease-specific therapy aims to improve symptoms, stabilise current disease and delay progression in patients with Fabry disease. In Australia, treatment access is subject to eligibility criteria initially established in 2004. Patients and their clinicians question why these criteria have remained unchanged despite significant progress in disease understanding. AIMS Appraise the clinical quality of the Australian treatment access criteria. METHODS The Fabry Australia Medical Advisory Committee (N = 6) used the Appraisal of Guidelines for REsearch and Evaluation Global Rating Scale (AGREE II GRS) to assess the clinical quality of the current treatment eligibility criteria. They reviewed the literature, developed 17 clinical statements to help guide reforms of the eligibility criteria and achieved consensus (achievement of ≥75% agreement in the range 5-7 on a 7-point Likert scale) through anonymous voting. The findings were applied to develop proposals for revised classification and treatment initiation criteria. RESULTS The current treatment eligibility criteria underperformed on the AGREE II GRS. They are pragmatic but out-of-step with contemporary data. Consensus was achieved on all 17 proposed clinical statements. There was strong agreement to differentiate classical male Fabry patients to facilitate timelier access to Fabry-specific treatment. There was also agreement on the value of adopting relevant organ involvement criteria in classical female patients and patients with non-classical disease. CONCLUSIONS Australian access criteria are misaligned with current clinical evidence. The clinical statements and proposed classification and initiation criteria should prompt discussions to support more equitable access to treatment and better align Australian practice with contemporary evidence and international guidelines.
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Affiliation(s)
- Kathleen Nicholls
- Department of Nephrology, Royal Melbourne Hospital, Melbourne, Victoria, Australia
- Department of Medicine, The University of Melbourne, Melbourne, Victoria, Australia
| | - Charles Denaro
- Department of Internal Medicine and Aged Care, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
- Academy of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Michel Tchan
- Department of Genetic Medicine, Westmead Hospital, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Carolyn Ellaway
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
- Genetic Metabolic Disorders Service, Sydney Children's Hospital Network, Sydney, New South Wales, Australia
| | - Drago Bratkovic
- Department of Internal Medicine and Aged Care, Women's and Children's Hospital, North Adelaide, South Australia, Australia
| | | | - Megan Fookes
- Fabry Australia, Sydney, New South Wales, Australia
| | - Mark Thomas
- Department of Nephrology, Royal Perth Hospital, Perth, Western Australia, Australia
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Lobel CJ, Laney DA, Yang J, Jacob D, Rickheim A, Ogg CZ, Clynes D, Dronen J. FDrisk: development of a validated risk assessment tool for Fabry disease utilizing electronic health record data. JOURNAL OF RARE DISEASES (BERLIN, GERMANY) 2024; 3:2. [PMID: 38187171 PMCID: PMC10766665 DOI: 10.1007/s44162-023-00026-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 12/20/2023] [Indexed: 01/09/2024]
Abstract
Purpose Fabry disease (FD) is a rare, X-linked, lysosomal storage disease characterized by great variability in clinical presentation and progressive multisystemic organ damage. Lack of awareness of FD and frequent misdiagnoses cause long diagnostic delays. To address the urgent need for earlier diagnosis, we created an online, risk-assessment scoring tool, the FDrisk, for predicting an individual's risk for FD and prompting diagnostic testing and clinical evaluation. Methods Utilizing electronic health records, data were collected retrospectively from randomly selected, deidentified patients with FD treated at the Emory Lysosomal Storage Disease Center. Deidentified, negative controls were randomly selected from the Fabry Disease Diagnostic Testing and Education project database, a program within the American Association of Kidney Patients Center for Patient Education and Research. Diagnosis of FD was documented by evidence of a pathogenic variant in GLA and/or an abnormal level of leukocyte α-Gal A. Thirty characteristic clinical features of FD were initially identified and subsequently curated into 16 clinical covariates used as predictors for the risk of FD. An overall prediction model and two sex-specific prediction models were built. Two-hundred and sixty samples (130 cases, 130 controls) were used to train the risk prediction models. One-hundred and ninety-seven independent samples (30 cases, 167 controls) were used for testing model performance. Prediction accuracy was evaluated using a threshold of 0.5 to determine a predicted case vs. control. Results The overall risk prediction model demonstrated 80% sensitivity, 83.8% specificity, and positive predictive value of 47.1%. The male model demonstrated 75% sensitivity, 95.8% specificity, and positive predictive value of 75%. The female model demonstrated 83.3% sensitivity, 81.3% specificity, and positive predictive value of 45.5%. Patients with risk scores at or above 50% are categorized as "at risk" for FD and should be sent for diagnostic testing. Conclusion We have developed a statistical risk prediction model, the FDrisk, a validated, clinician-friendly, online, risk-assessment scoring tool for predicting an individual's risk for FD and prompting diagnostic testing and clinical evaluation. As an easily accessible, user-friendly scoring tool, we believe implementing the FDrisk will significantly decrease the time to diagnosis and allow earlier initiation of FD-specific therapy.
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Affiliation(s)
- Caryn J. Lobel
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA USA
| | - Dawn A. Laney
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA USA
| | - Jingjing Yang
- Department of Human Genetics, Center for Computational and Quantitative Genetics, Emory University School of Medicine, Atlanta, GA USA
| | - David Jacob
- ThinkGenetic Foundation, Inc., Sudbury, MA USA
| | | | | | - Diana Clynes
- American Association of Kidney Patients, Tampa, FL USA
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Avarappattu J, Gaspert A, Spartà G, Rohrbach M. Impact of kidney biopsy on deciding when to initiate enzyme replacement therapy in children with Fabry disease. Pediatr Nephrol 2024; 39:131-140. [PMID: 37470867 PMCID: PMC10673963 DOI: 10.1007/s00467-023-06050-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 05/19/2023] [Accepted: 06/04/2023] [Indexed: 07/21/2023]
Abstract
BACKGROUND Recommendations on when to start enzyme replacement therapy (ERT) in children with Fabry disease (FD) differ between guidelines. In this study, kidney biopsies of a cohort of 14 untreated children and one treated child were analyzed for their morphologic changes to determine whether early initiation of ERT is indicated. METHODS All pediatric FD patients (< 18 years old) diagnosed between 2003 and 2021 in our department who received a kidney biopsy were enrolled. Clinical symptoms; laboratory parameters regarding kidney function, such as eGFR, plasma urea, protein-creatinine, and albumin/creatinine ratio; and 14 kidney biopsies prior to ERT and one under treatment were retrospectively analyzed. RESULTS A total of 14 patients were enrolled, including 9 male and 5 female children, aged 3-18 years (median age 11). Seven of the enrolled children were 10 years old or younger. Histological analysis of kidney biopsy samples revealed severe vacuolization and accumulation of inclusions in podocytes and renal tubules. The majority of cases had no FD-specific clinical or laboratory features independent of age, gender, or genotype. The youngest FD patient presenting with isolated abnormal kidney biopsy was 3 years old. CONCLUSIONS We demonstrate that histological lesions, typical for FD, can be observed in kidney biopsies at a very young age in patients without classical clinical symptoms or laboratory abnormalities. Thus, we recommend kidney biopsies as a possible tool for early diagnosis of renal involvement in FD. As a consequence of these early biopsy findings without a clinical correlate, an early initiation of ERT should be considered. A higher resolution version of the Graphical abstract is available as Supplementary information.
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Affiliation(s)
- Jenny Avarappattu
- Department of Metabolic Medicine and Department of Nephrology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Ariana Gaspert
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Giuseppina Spartà
- Department of Metabolic Medicine and Department of Nephrology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Marianne Rohrbach
- Department of Metabolic Medicine and Department of Nephrology, University Children's Hospital Zurich, Zurich, Switzerland.
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7
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Mackels L, Servais L. The Importance of Early Treatment of Inherited Neuromuscular Conditions. J Neuromuscul Dis 2024; 11:253-274. [PMID: 38306060 DOI: 10.3233/jnd-230189] [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] [Indexed: 02/03/2024]
Abstract
There has been tremendous progress in treatment of neuromuscular diseases over the last 20 years, which has transformed the natural history of these severely debilitating conditions. Although the factors that determine the response to therapy are many and in some instance remain to be fully elucidated, early treatment clearly has a major impact on patient outcomes across a number of inherited neuromuscular conditions. To improve patient care and outcomes, clinicians should be aware of neuromuscular conditions that require prompt treatment initiation. This review describes data that underscore the importance of early treatment of children with inherited neuromuscular conditions with an emphasis on data resulting from newborn screening efforts.
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Affiliation(s)
- Laurane Mackels
- MDUK Oxford Neuromuscular Centre, Department of Paediatrics, University of Oxford, Oxford, United Kingdom
- Adult Neurology Department, Citadelle Hospital, Liège, Belgium
| | - Laurent Servais
- Neuromuscular Centre, Division of Paediatrics, University and University Hospital of Liège, Liège, Belgium
- MDUK Oxford Neuromuscular Centre, Department of Paediatrics, University of Oxford & NIHR Oxford Biomedical Research Centre, Oxford, United Kingdom
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8
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Monda E, Falco L, Palmiero G, Rubino M, Perna A, Diana G, Verrillo F, Dongiglio F, Cirillo A, Fusco A, Caiazza M, Limongelli G. Cardiovascular Involvement in Fabry's Disease: New Advances in Diagnostic Strategies, Outcome Prediction and Management. Card Fail Rev 2023; 9:e12. [PMID: 37602190 PMCID: PMC10433112 DOI: 10.15420/cfr.2023.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 05/22/2023] [Indexed: 08/22/2023] Open
Abstract
Cardiovascular involvement is common in Fabry's disease and is the leading cause of morbidity and mortality. The research is focused on identifying diagnostic clues suggestive of cardiovascular involvement in the preclinical stage of the disease through clinical and imaging markers. Different pathophysiologically driven therapies are currently or will soon be available for the treatment of Fabry's disease, with the most significant benefit observed in the early stages of the disease. Thus, early diagnosis and risk stratification for adverse outcomes are crucial to determine when to start an aetiological treatment. This review describes the cardiovascular involvement in Fabry's disease, focusing on the advances in diagnostic strategies, outcome prediction and disease management.
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Affiliation(s)
- Emanuele Monda
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
- Institute of Cardiovascular Science, University College LondonLondon, UK
| | - Luigi Falco
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
| | - Giuseppe Palmiero
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
| | - Marta Rubino
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
| | - Alessia Perna
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
| | - Gaetano Diana
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
| | - Federica Verrillo
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
| | - Francesca Dongiglio
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
| | - Annapaola Cirillo
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
| | - Adelaide Fusco
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
| | - Martina Caiazza
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
| | - Giuseppe Limongelli
- Inherited and Rare Cardiovascular Diseases, Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, Monaldi HospitalNaples, Italy
- Institute of Cardiovascular Science, University College LondonLondon, UK
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Wanner C, Ortiz A, Wilcox WR, Hopkin RJ, Johnson J, Ponce E, Ebels JT, Batista JL, Maski M, Politei JM, Martins AM, Banikazemi M, Linhart A, Mauer M, Oliveira JP, Weidemann F, Germain DP. Global reach of over 20 years of experience in the patient-centered Fabry Registry: Advancement of Fabry disease expertise and dissemination of real-world evidence to the Fabry community. Mol Genet Metab 2023; 139:107603. [PMID: 37236007 DOI: 10.1016/j.ymgme.2023.107603] [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: 02/17/2023] [Revised: 04/13/2023] [Accepted: 04/27/2023] [Indexed: 05/28/2023]
Abstract
Fabry disease (FD, α-galactosidase A deficiency) is a rare, progressive, complex lysosomal storage disorder affecting multiple organ systems with a diverse spectrum of clinical phenotypes, particularly among female patients. Knowledge of its clinical course was still limited in 2001 when FD-specific therapies first became available and the Fabry Registry (NCT00196742; sponsor: Sanofi) was initiated as a global observational study. The Fabry Registry has now been operational for over 20 years, overseen by expert Boards of Advisors, and has collected real-world demographic and longitudinal clinical data from more than 8000 individuals with FD. Leveraging the accumulating evidence base, multidisciplinary collaborations have resulted in the creation of 32 peer-reviewed scientific publications, which have contributed to the greatly expanded knowledge on the onset and progression of FD, its clinical management, the role of sex and genetics, the outcomes of enzyme replacement therapy with agalsidase beta, and prognostic factors. We review how the Fabry Registry has evolved from its inception to become the largest global source of real-world FD patient data, and how the generated scientific evidence has helped to better inform the medical community, individuals living with FD, patient organizations, and other stakeholders. The patient-centered Fabry Registry fosters collaborative research partnerships with the overarching goal of optimizing the clinical management of patients with FD and is well positioned to add to its past achievements.
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Affiliation(s)
- Christoph Wanner
- Department of Medicine, Division of Nephrology, University Hospital of Würzburg, Würzburg, Germany.
| | - Alberto Ortiz
- Jiménez Díaz Foundation University Hospital and IIS-Fundación Jiménez Díaz UAM, Madrid, Spain; Department of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | - William R Wilcox
- Division of Medical Genetics, Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Robert J Hopkin
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, USA; Department of Pediatrics University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Jack Johnson
- Fabry Support & Information Group, Concordia, MO, USA
| | - Elvira Ponce
- Global Medical Affairs, Rare Nephrology, Sanofi, Cambridge, MA, USA
| | - Johan T Ebels
- Global Medical Affairs, Rare Nephrology, Sanofi, Cambridge, MA, USA
| | | | - Manish Maski
- Global Medical Affairs, Rare Nephrology, Sanofi, Cambridge, MA, USA
| | - Juan M Politei
- Foundation for the Study of Neurometabolic Diseases, FESEN, Buenos Aires, Argentina
| | - Ana Maria Martins
- Reference Center for Inborn Errors of Metabolism, Federal University of São Paulo, São Paulo, Brazil
| | - Maryam Banikazemi
- Advanced Medical Genetics, Westchester Medical Center, Valhalla, NY, USA; New York Medical College and New York Health & Hospital, New York, NY, USA
| | - Aleš Linhart
- Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic; General University Hospital, Prague, Czech Republic
| | - Michael Mauer
- Departments of Pediatrics and Medicine, University of Minnesota, Minneapolis, MN, USA
| | - João P Oliveira
- Service of Human Genetics, São João University Hospital Centre; Unit of Genetics, Department of Pathology, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Frank Weidemann
- Department of Medicine I, Klinikum Vest GmbH, Knappschaftskrankenhaus Recklinghausen, Academic Teaching Hospital, Recklinghausen, Germany
| | - Dominique P Germain
- French Referral Center for Fabry disease and MetabERN European Reference Network for Inherited Metabolic Diseases, Division of Medical Genetics, University of Versailles, Paris-Saclay University, Montigny, France
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10
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Gragnaniello V, Burlina AP, Commone A, Gueraldi D, Puma A, Porcù E, Stornaiuolo M, Cazzorla C, Burlina AB. Newborn Screening for Fabry Disease: Current Status of Knowledge. Int J Neonatal Screen 2023; 9:31. [PMID: 37367212 DOI: 10.3390/ijns9020031] [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: 04/03/2023] [Revised: 05/24/2023] [Accepted: 06/01/2023] [Indexed: 06/28/2023] Open
Abstract
Fabry disease is an X-linked progressive lysosomal disorder, due to α-galactosidase A deficiency. Patients with a classic phenotype usually present in childhood as a multisystemic disease. Patients presenting with the later onset subtypes have cardiac, renal and neurological involvements in adulthood. Unfortunately, the diagnosis is often delayed until the organ damage is already irreversibly severe, making specific treatments less efficacious. For this reason, in the last two decades, newborn screening has been implemented to allow early diagnosis and treatment. This became possible with the application of the standard enzymology fluorometric method to dried blood spots. Then, high-throughput multiplexable assays, such as digital microfluidics and tandem mass spectrometry, were developed. Recently DNA-based methods have been applied to newborn screening in some countries. Using these methods, several newborn screening pilot studies and programs have been implemented worldwide. However, several concerns persist, and newborn screening for Fabry disease is still not universally accepted. In particular, enzyme-based methods miss a relevant number of affected females. Moreover, ethical issues are due to the large number of infants with later onset forms or variants of uncertain significance. Long term follow-up of individuals detected by newborn screening will improve our knowledge about the natural history of the disease, the phenotype prediction and the patients' management, allowing a better evaluation of risks and benefits of the newborn screening for Fabry disease.
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Affiliation(s)
- Vincenza Gragnaniello
- Division of Inherited Metabolic Diseases, Department of Diagnostic Services, University Hospital, 35128 Padua, Italy
| | | | - Anna Commone
- Division of Inherited Metabolic Diseases, Department of Diagnostic Services, University Hospital, 35128 Padua, Italy
| | - Daniela Gueraldi
- Division of Inherited Metabolic Diseases, Department of Diagnostic Services, University Hospital, 35128 Padua, Italy
| | - Andrea Puma
- Division of Inherited Metabolic Diseases, Department of Diagnostic Services, University Hospital, 35128 Padua, Italy
| | - Elena Porcù
- Division of Inherited Metabolic Diseases, Department of Diagnostic Services, University Hospital, 35128 Padua, Italy
| | - Maria Stornaiuolo
- Division of Inherited Metabolic Diseases, Department of Diagnostic Services, University Hospital, 35128 Padua, Italy
| | - Chiara Cazzorla
- Division of Inherited Metabolic Diseases, Department of Diagnostic Services, University Hospital, 35128 Padua, Italy
| | - Alberto B Burlina
- Division of Inherited Metabolic Diseases, Department of Diagnostic Services, University Hospital, 35128 Padua, Italy
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11
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Harigane Y, Morimoto I, Suzuki O, Temmoku J, Sakamoto T, Nakamura K, Machii K, Miyata M. Enzyme replacement therapy in two patients with classic Fabry disease from the same family tree: Two case reports. World J Clin Cases 2023; 11:3542-3551. [PMID: 37383915 PMCID: PMC10294186 DOI: 10.12998/wjcc.v11.i15.3542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 01/29/2023] [Accepted: 04/17/2023] [Indexed: 05/25/2023] Open
Abstract
BACKGROUND The pathophysiology of Fabry disease (FD)-induced progressive vital organ damage is irreversible. Disease progression can be delayed using enzyme replacement therapy (ERT). In patients with classic FD, sporadic accumulation of globotriaosylceramide (GL-3) in the heart and kidney begins in utero; however, until childhood, GL-3 accumulation is mild and reversible and can be restored by ERT. The current consensus is that ERT initiation during early childhood is paramount. Nonetheless, complete recovery of organs in patients with advanced FD is challenging.
CASE SUMMARY Two related male patients, an uncle (patient 1) and nephew (patient 2), presented with classic FD. Both patients were treated by us. Patient 1 was in his 50s, and ERT was initiated following end-organ damage; this was subsequently ineffective. He developed cerebral infarction and died of sudden cardiac arrest. Patient 2 was in his mid-30s, and ERT was initiated when the patient was diagnosed with FD, during which the damage to vital organs was not overtly apparent. Although he had left ventricular hypertrophy at the beginning of this treatment, the degree of hypertrophy progression was limited to a minimal range after > 18 years of ERT.
CONCLUSION We obtained discouraging ERT outcomes for older patients but encouraging outcomes for younger adults with classic FD.
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Affiliation(s)
- Yuki Harigane
- Department of Urology, Fukushima Medical University, Fukushima 960-1295, Japan
| | | | - O Suzuki
- Department of Diagnostic Pathology, Fukushima Medical University, Fukushima 960-1295, Japan
| | - Jumpei Temmoku
- Center of Internal Medicine for Rheumatology and Collagen Disease, Fukushima Red Cross Hospital, Fukushima 960-8530, Japan
| | - Takayuki Sakamoto
- Department of Cardiology, Fukushima Red Cross Hospital, Fukushima 960-8530, Japan
| | - Kohichiro Nakamura
- Department of Neurology, Fukushima Red Cross Hospital, Fukushima 960-8530, Japan
| | - Kazuo Machii
- Machii Cardiology and Internal Medicine Clinic, Fukushima 960-8530, Japan
| | - Masayuki Miyata
- Center of Internal Medicine for Rheumatology and Collagen Disease, Fukushima Red Cross Hospital, Fukushima 960-8530, Japan
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12
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Umer M, Kalra DK. Treatment of Fabry Disease: Established and Emerging Therapies. Pharmaceuticals (Basel) 2023; 16:320. [PMID: 37259462 PMCID: PMC9967779 DOI: 10.3390/ph16020320] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 01/14/2024] Open
Abstract
Fabry disease (FD) is a rare, X-linked inherited disorder of glycosphingolipid metabolism. It leads to the progressive accumulation of globotriaosylceramide within lysosomes due to a deficiency of α-galactosidase A enzyme. It involves multiple organs, predominantly the renal, cardiac, and cerebrovascular systems. Early diagnosis and treatment are critical to prevent progression to irreversible tissue damage and organ failure, and to halt life-threatening complications that can significantly reduce life expectancy. This review will focus on the established and emerging treatment options for FD.
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Affiliation(s)
| | - Dinesh K. Kalra
- Division of Cardiology, University of Louisville, Louisville, KY 40202, USA
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13
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Starcea IM, Bodescu Amancei Ionescu L, Lazaruc TI, Lupu VV, Bogos RA, Ioniuc I, Dragan F, Lupu A, Galatanu LS, Miron IC, Mocanu A. Palm-Plant Pain, Sign of a Severe Systemic Disease? Case Report and Review of Literature. Genes (Basel) 2023; 14:516. [PMID: 36833443 PMCID: PMC9957027 DOI: 10.3390/genes14020516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 02/09/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
Fabry disease is an X-linked lysosomal storage disease, second in prevalence after Gaucher disease. The onset of symptoms occurs in childhood or adolescence with palmo-plantar burning pains, hypo hidrosis, angiokeratomas, and corneal deposits. In the absence of diagnosis and treatment, the disease will progress to the late phase, characterized by progressive cardiac, cerebral and renal damage, and possible death. We present the case of an 11-year-old male boy who was transferred to the Pediatric Nephrology Department for palmo-plantar burning pain and end stage renal disease. Following the evaluations for the etiology of end stage renal disease we excluded the vasculitis, the neurologic diseases, extrapulmonary tuberculosis. Because of suggestive aspect at CT scan and lack of etiologic diagnosis of renal insufficiency we performed lymph node and kidney biopsy, with a surprising result for storage disease. The specific investigation confirmed the diagnosis.
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Affiliation(s)
| | | | - Tudor Ilie Lazaruc
- Pediatrics, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Vasile Valeriu Lupu
- Pediatrics, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | | | - Ileana Ioniuc
- Pediatrics, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Felicia Dragan
- Faculty of Medicine and Pharmacy, University of Oradea, 410087 Oradea, Romania
| | - Ancuta Lupu
- Pediatrics, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | | | | | - Adriana Mocanu
- Pediatrics, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
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14
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Umer M, Kalra DK. Cardiac MRI in Fabry disease. Front Cardiovasc Med 2023; 9:1075639. [PMID: 36818911 PMCID: PMC9931723 DOI: 10.3389/fcvm.2022.1075639] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 12/30/2022] [Indexed: 02/05/2023] Open
Abstract
Fabry disease is a rare, progressive X-linked inherited disorder of glycosphingolipid metabolism due to a deficiency of α-galactosidase A enzyme. It leads to the accumulation of globotriaosylceramide within lysosomes of multiple organs, predominantly the vascular, renal, cardiac, and nervous systems. Fabry cardiomyopathy is characterized by increased left ventricular wall thickness/mass, functional abnormalities, valvular heart disease, arrhythmias, and heart failure. Early diagnosis and treatment are critical to avoid cardiac or renal complications that can significantly reduce life expectancy in untreated FD. This review will focus on the role of cardiovascular magnetic resonance imaging in the diagnosis, clinical decision-making, and monitoring of treatment efficacy.
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15
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Hopkin RJ, Cabrera GH, Jefferies JL, Yang M, Ponce E, Brand E, Feldt-Rasmussen U, Germain DP, Guffon N, Jovanovic A, Kantola I, Karaa A, Martins AM, Tøndel C, Wilcox WR, Yoo HW, Burlina AP, Mauer M. Clinical outcomes among young patients with Fabry disease who initiated agalsidase beta treatment before 30 years of age: An analysis from the Fabry Registry. Mol Genet Metab 2023; 138:106967. [PMID: 36709533 DOI: 10.1016/j.ymgme.2022.106967] [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: 07/30/2022] [Revised: 11/26/2022] [Accepted: 11/26/2022] [Indexed: 12/02/2022]
Abstract
BACKGROUND Clinical manifestations of classic Fabry disease (α-galactosidase A deficiency) usually occur in childhood, while complications involving major organs typically develop in adulthood. Outcomes of Fabry-specific treatment among young patients have not been extensively reported. Our aim was to analyze clinical outcomes among patients aged 5-30 years at initiation of treatment with agalsidase beta using data from the Fabry Registry (NCT00196742, sponsor: Sanofi). METHODS Reported GLA variants were predicted to be associated with the classic phenotype or not classified in fabry-database.org. Linear mixed models were conducted to assess changes over ≥2-year follow-up in the estimated glomerular filtration rate (eGFR) stratified by low (LRI) and high (HRI) renal involvement (defined by proteinuria/albuminuria levels), and changes in interventricular septal thickness (IVST) and left ventricular posterior wall thickness (LVPWT) Z-scores stratified by median age at first treatment. Self-reports ('yes'/'no') of abdominal pain, diarrhea, chronic peripheral pain (denoting neuropathic pain), and acute pain crises at baseline were compared with reports after ≥0.5-year and ≥2.5-year follow-up using McNemar's test. RESULTS Male (n = 117) and female patients (n = 59) with LRI initiated treatment at a median age of 19.9 and 23.6 years, respectively, and were followed for a median of 6.3 and 5.0 years, respectively. The eGFR slopes were -1.18 (Pfrom 0 <0.001) and -0.92 mL/min/1.73 m2/year (Pfrom 0 = 0.040), respectively. Males with HRI (n = 23, median UPCR 1.0 g/g), who started treatment at a median age of 26.7 years, had an eGFR slope of -2.39 mL/min/1.73 m2/year (Pfrom 0 <0.001; Pdifference = 0.055, as compared with the slope of -1.18 mL/min/1.73 m2/year for LRI males) during a median follow-up of 5.6 years. Echocardiographic variables were stable among males, regardless of age, and among young females (median follow-up >5.5 years and ≥4.5 years, respectively). Older females (treatment initiation at median age 27.5 years) had a slope of LVPWT Z-scores of 0.18/year (n = 12, Pfrom 0 = 0.028), whereas IVST Z-scores remained stable (n = 13, 0.10/year, Pfrom 0 = 0.304) during a median follow-up of ≥3.7 years. These slopes did not significantly differ from slopes of younger females. Reports of chronic peripheral pain and acute pain crises by males, and of diarrhea and acute pain crises by females, significantly reduced after a median follow-up of ≥4.0 years. After a median follow-up of ≥5.4 years, reports of all four symptoms significantly decreased among males, whereas among females only reports of abdominal pain significantly decreased. CONCLUSIONS During sustained treatment with agalsidase beta in young Fabry patients with a predicted classic phenotype or with unclassified GLA variants with similar characteristics, the decline in eGFR was modest among male and female patients with LRI. The greater decline in eGFR among older, proteinuric (i.e., HRI) males may suggest a benefit of earlier treatment. Overall, echocardiographic variables remained stable, particularly among males and younger females. Significant reductions in symptom reports occurred primarily among males after longer follow-up and were less noticeable among females. These observed trends are suggestive of an overall improvement after treatment in young patients, but warrant larger longitudinal studies.
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Affiliation(s)
- Robert J Hopkin
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, and Department of Pediatrics University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| | | | - John L Jefferies
- The Cardiovascular Institute, University of Tennessee Health Science Center, Memphis, TN, USA
| | | | | | - Eva Brand
- Internal Medicine D, Department of Nephrology, Hypertension and Rheumatology, University Hospital Münster, Münster, Germany
| | - Ulla Feldt-Rasmussen
- Department of Medical Endocrinology and Metabolism, Rigshospitalet, Copenhagen University Hospital, and Department of Clinical Medicine, Faculty of Health and Clinical Sciences, Copenhagen University, Copenhagen, Denmark
| | - Dominique P Germain
- French Referral Center for Fabry disease, Division of Medical Genetics, University of Versailles and APHP - Paris Saclay University, Garches, France
| | - Nathalie Guffon
- Centre de Référence des Maladies Héréditaires du Métabolisme, Hôpital Femme Mère Enfant, Bron Cedex, France
| | - Ana Jovanovic
- Mark Holland Metabolic Unit, Salford Royal NHS Foundation Trust, Salford, UK
| | - Ilkka Kantola
- Division of Medicine, Turku University Hospital, University of Turku, Turku, Finland
| | - Amel Karaa
- Department of Genetics, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Ana M Martins
- Reference Center for Inborn Errors of Metabolism, Federal University of São Paulo, São Paulo, Brazil
| | - Camilla Tøndel
- Department of Pediatrics, Haukeland University Hospital, Bergen, Norway, and Department of Clinical Science, University of Bergen, Bergen, Norway
| | - William R Wilcox
- Division of Medical Genetics, Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Han-Wook Yoo
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | | | - Michael Mauer
- Departments of Pediatrics and Medicine, University of Minnesota, Minneapolis, MN, USA
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16
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Gou P, Leng J, Cheng X, Zhang J. Clinical evaluation, accurate diagnosis and treatment of four pedigrees with Fabry's disease. Front Pediatr 2023; 11:1057014. [PMID: 36873653 PMCID: PMC9975747 DOI: 10.3389/fped.2023.1057014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/18/2023] [Indexed: 02/17/2023] Open
Abstract
OBJECTIVE This article analyzes the data of four families with mutations of the GLA (galactosidase) gene with a special focus on the clinical presentation, diagnosis, and interdisciplinary clinical management of Fabry disease (FD) and enzyme replacement therapy (ERT) treatment, and has the aim to assess more accurate prevention and treatment strategy. METHODS The MSSI (Mainz Severity Score Index) scale was used to evaluate the clinical data of five children diagnosed in our hospital, and the genotypes of all the patients with FD were collected. Two of the male children started ERT. We summarize the clinical effect and the evaluation of globotriaosylsphingosine (Lyso-GL-3) before and after treatment. RESULTS Five children were confirmed as having FD using the family histories, clinical manifestations, α-galactosidase A (a-Gal A) activity, and genetic test results. Two children used agalsidase α every 2 weeks regularly, after ERT. Their clinical symptoms improved, their pain intensity was significantly relieved, and upon re-examination their Lyso-GL-3 decreased conspicuously and no serious adverse reactions occurred. We report for the first time four families with children with FD. The youngest child was only 1 year old. The four families included one girl which is rare in X-linked lysosomal storage diseases. CONCLUSION The clinical phenotype of FD in childhood is nonspecific, and the misdiagnosis rate is high. Most children with FD have a delayed diagnosis, and their organs are often seriously damaged in adulthood. Pediatricians must improve their diagnosis and treatment awareness, screen high-risk groups, and emphasize multidisciplinary cooperation and holistic lifestyle management after diagnosis. The diagnosis of the proband is also conducive to the mining of other cases of FD families and has important guiding significance for prenatal diagnosis.
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Affiliation(s)
- Peng Gou
- Department of Pediatric Genetics, Endocrinology and Metabolism, Chengdu Women and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Jie Leng
- Department of Pediatric Genetics, Endocrinology and Metabolism, Chengdu Women and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Xinran Cheng
- Department of Pediatric Genetics, Endocrinology and Metabolism, Chengdu Women and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Jing Zhang
- Department of Pediatric Genetics, Endocrinology and Metabolism, Chengdu Women and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
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17
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Li Q, Wang J, Tian M, Yang Z, Yu L, Liu S, Wang C, Wang X, Sun S. Clinical features and enzyme replacement therapy in 10 children with Fabry disease. Front Pediatr 2023; 11:1084336. [PMID: 36816376 PMCID: PMC9936091 DOI: 10.3389/fped.2023.1084336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 01/12/2023] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVE To summarize the clinical features, diagnosis and enzyme replacement therapy(ERT) of Fabry disease (FD) in children. METHODS The clinical data, laboratory tests, genetic variations and treatment of 10 FD children diagnosed in Shandong Provincial Hospital from September 2020 to June 2022 were retrospectively analyzed. RESULTS Among the 10 cases from 6 families, 7 patients were boys of 4 to 13 years of age, and 3 were girls of 12 to 15 years of age. There were 7 symptomatic patients, including 6 boys and 1 girl. All 7 patients presented with acral neuralgia. Five patients had little or no sweating. Five patients presented with cutaneous angiokeratoma. Two patients had abdominal pain. One patient developed joint symptoms. Four patients had corneal opacity. One patient had hearing loss; one patient had short stature. One patient had mild proteinuria and 1 patient had dysplasia of the right kidney with decreased eGFR (55.28 ml/min.1.73 m2). The left ventricular mass index was slightly elevated in 1 patient. Three patients had mild obstructive ventilatory dysfunction; a small amount of effusion in the intestinal space of the lower abdomen or mild fatty liver was found in 2 patients. Partial empty sella turcica in 1 patient. A total of 6 GLA gene variants were detected in 10 children, among which C.1059_1061delGAT (p.met353del) was a newly discovered mutation. Five children received ERT, of which 4 were treated with agalsidase beta and 1 was treated with agalsidase alpha. Only 1 patient had anaphylaxis. Lyso-GL-3 levels decreased significantly in the first 3 months of ERT initiation and remained relatively stable thereafter in 3 patients. The Lyso-GL-3 level was decreased, but renal impairment continued to progress in 1 patient treated with agalsidase alpha. CONCLUSION The clinical manifestations of FD in childhood are diverse, and it is necessary to make a definite diagnosis by combining family history, enzyme activity, biomarkers, gene testing and other indicators. Pedigree screening and high-risk population screening are helpful for early identification, early diagnosis and early treatment. No serious adverse reactions were found during the short-term treatment with agalsidase alpha and beta.
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Affiliation(s)
- Qian Li
- Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Jing Wang
- Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Minle Tian
- School of Basic Medical Sciences, Shandong First Medical University, Taian, China
| | - Zhenle Yang
- Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Lichun Yu
- Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Suwen Liu
- Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Cong Wang
- Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Xiaoyuan Wang
- Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Shuzhen Sun
- Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Pediatric Nephrology and Rheumatism and Immunology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
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Leonowens C, Schmith V, Zhou J, Wu YS, Ivaturi V, Johnson FK. Population Pharmacokinetics of Oral Migalastat in Adolescents and Adults With and Without Renal Impairment. Clin Pharmacol Drug Dev 2022; 11:1367-1381. [PMID: 36331497 DOI: 10.1002/cpdd.1160] [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: 12/10/2021] [Accepted: 07/26/2022] [Indexed: 11/06/2022]
Abstract
Migalastat is approved for the treatment of Fabry disease (FD) with amenable variants. Objectives were to characterize effects of estimated glomerular filtration rate (eGFR) on oral clearance (CL), predict doses in mild to moderate renal impairment and in pediatric patients with FD, and to improve designs of FD studies. A 2-compartment model was fit to data from 260 subjects with/without FD and iteratively refined with evolving data. FD, eGFR, and weight affected CL, while weight and FD affected volume. Optimal sampling theory was used to choose pharmacokinetic sampling times for pediatric studies. Doses in patients with renal impairment and in pediatrics were determined by targeting exposure in adults receiving migalastat 123 mg every other day. A clinical study was conducted in 20 adolescent patients with FD ≥45 kg. eGFR had the largest effect on CL. Simulations showed that exposures in moderate renal impairment were within phase 2-3 exposures; patients aged 2-17 years require weight-based dosing; and predicted exposures in adolescent patients ≥45 kg receiving migalastat 123 mg every other day were similar to adults (data confirmed in a clinical study). Model-informed drug development optimized dosing and design of clinical studies and supported that no dose adjustments were needed in patients with mild to moderate renal impairment or in adolescent patients ≥45 kg.
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Affiliation(s)
| | | | - Jie Zhou
- Nuventra, LLC, Exton, Pennsylvania, USA
| | | | - Vijay Ivaturi
- Pumas-AI, Inc., Baltimore, Maryland, USA.,University of Maryland, Baltimore, Maryland, USA
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19
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Umer M, Motwani M, Jefferies JL, Kalra DK. Cardiac involvement in Fabry Disease and the Role of Multimodality Imaging in Diagnosis and Disease Monitoring. Curr Probl Cardiol 2022; 48:101439. [DOI: 10.1016/j.cpcardiol.2022.101439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 09/30/2022] [Indexed: 11/16/2022]
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20
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Burden associated with Fabry disease and its treatment in 12-15 year olds: results from a European survey. Orphanet J Rare Dis 2022; 17:266. [PMID: 35840992 PMCID: PMC9287883 DOI: 10.1186/s13023-022-02417-3] [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: 12/15/2021] [Accepted: 06/30/2022] [Indexed: 11/18/2022] Open
Abstract
Background Fabry Disease (FD) is a rare X-linked metabolic lysosomal disorder. FD has a broad range of symptoms which vary markedly between patients. The heterogenous nature of the disease makes diagnosis difficult for health care professionals (HCPs), which in turn has a significant effect on the patient’s quality of life (QoL). As few adolescent patients are eligible for treatment, to date there has been little published data on the burden of disease and impact of treatment on these patients and their caregivers. This study was developed to provide some insight into these groups. Methods An online-based survey was performed to gather further insights on the burden of FD in 14 adolescents aged 12–15 years old across three European countries, from the perspective of the patients, caregivers and HCPs. Results Symptom burden was found to be high in the adolescent population, with ‘pain’ and ‘intolerance to heat or cold’ commonly reported symptoms, both by patients and to HCPs. Eleven of the 14 patients surveyed were receiving enzyme replacement therapy (ERT), with their post-ERT symptomology showing improvement when compared to symptoms before receiving ERT. The majority of caregivers believe their child’s overall health has improved since starting ERT. While there was a positive outlook towards ERT noted by the patients and caregivers, 4/5 HCPs believed there is ‘a need for more efficacious treatment options’ and all HCPs noted that there is ‘a need for more manageable treatment options’. FD was shown to place a burden on caregivers, who reported feelings of guilt and absences from work. Conclusions Data show there is a significant symptom burden for the adolescent, which affects their QoL and mental health, as well as placing a burden on the wider family. While ERT is an effective treatment and provides symptom relief for many of the respondents in the survey, they still reported symptom burden. Additionally, there was reporting of reluctance to engage in treatment or difficulties associated with the treatment. Heterogeneity in symptom presentation suggests that the treatment regimen needs to be tailored to the individual. Physicians therefore need to have a choice of treatment options available to help them manage symptoms and disease where the benefit to risk ratio is in favour of undergoing treatment. Supplementary Information The online version contains supplementary material available at 10.1186/s13023-022-02417-3.
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21
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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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22
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Fabry Disease in Slovakia: How the Situation Has Changed over 20 Years of Treatment. J Pers Med 2022; 12:jpm12060922. [PMID: 35743707 PMCID: PMC9224707 DOI: 10.3390/jpm12060922] [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: 04/21/2022] [Revised: 05/19/2022] [Accepted: 05/27/2022] [Indexed: 11/17/2022] Open
Abstract
Fabry disease (FD, OMIM#301500) is a rare inborn error of the lysosomal enzyme α-galactosidase (α-Gal A, EC 3.2.1.22) and results in progressive substrate accumulation in tissues with a wide range of clinical presentations. Despite the X-linked inheritance, heterozygous females may also be affected. Hemizygous males are usually affected more severely, with an earlier manifestation of the symptoms. Rising awareness among health care professionals and more accessible diagnostics have positioned FD among the most-common inherited metabolic diseases in adults. An early and correct diagnosis of FD is crucial with a focus on personalised therapy. Preventing irreversible destruction of vital organs is the main goal of modern medicine. The aim of this study was to offer a complex report mapping the situation surrounding FD patients in Slovakia. A total of 48 patients (21 males, 27 females) with FD are registered in the Centre for Inborn Errors of Metabolism in Bratislava, Slovakia. In our cohort, we have identified three novel pathogenic variants in five patients. Three patients presented with the frameshift mutation c.736delA, and two others presented with the missense mutations c.203T>C, c.157A>C. Moreover, we present a new clinical picture of the pathogenic variant c.801+1G>A, which was previously described and associated with the renal phenotype.
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Ezgu F, Alpsoy E, Bicik Bahcebasi Z, Kasapcopur O, Palamar M, Onay H, Ozdemir BH, Topcuoglu MA, Tufekcioglu O. Expert opinion on the recognition, diagnosis and management of children and adults with Fabry disease: a multidisciplinary Turkey perspective. Orphanet J Rare Dis 2022; 17:90. [PMID: 35236382 PMCID: PMC8889663 DOI: 10.1186/s13023-022-02215-x] [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: 08/24/2021] [Accepted: 02/06/2022] [Indexed: 11/10/2022] Open
Abstract
This consensus statement by a panel of Fabry experts aimed to identify areas of consensus on conceptual, clinical and therapeutic aspects of Fabry disease (FD) and to provide guidance to healthcare providers on best practice in the management of pediatric and adult patients with FD. This consensus statement indicated the clinical heterogeneity of FD as well as a large number of pathogenic variants in the GLA gene, emphasizing a need for an individualized approach to patient care. The experts reached consensus on the critical role of a high index of suspicion in symptomatic patients and screening of certain at-risk groups to reveal timely and accurate diagnosis of FD along with an increased awareness of the treating physician about the different kinds of pathogenic variants and their clinical implications. The experts emphasized the crucial role of timely recognition of FD with minimal delay from symptom onset to definite diagnosis in better management of FD patients, given the likelihood of changing the disease's natural history, improving the patients' quality of life and the prognosis after enzyme replacement therapy (ERT) administered through a coordinated, multidisciplinary care approach. In this regard, this consensus document is expected to increase awareness among physicians about unique characteristics of FD to assist clinicians in recognizing FD with a well-established clinical suspicion consistent with pathogenic variants and gender-based heterogeneous clinical manifestations of FD and in translating this information into their clinical practice for best practice in the management of patients with FD.
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Affiliation(s)
- Fatih Ezgu
- Department of Pediatrics, Division of Pediatric Metabolism and Division of Pediatric Genetics, Gazi University Faculty of Medicine, 06560, Ankara, Turkey.
| | - Erkan Alpsoy
- Department of Dermatology, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Zerrin Bicik Bahcebasi
- Clinic of Nephrology, Kartal Dr. Lutfu Kirdar Training and Research Hospital, Istanbul, Turkey
| | - Ozgur Kasapcopur
- Department of Pediatrics, Division of Pediatric Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - Melis Palamar
- Department of Ophthalmology, Ege University Faculty of Medicine, Izmir, Turkey
| | - Huseyin Onay
- Department of Medical Genetics, Ege University Faculty of Medicine, Izmir, Turkey
| | | | | | - Omac Tufekcioglu
- University of Health Sciences Department of Cardiology, Ankara City Hospital, Ankara, Turkey
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Vaisbich MH, Andrade LGMD, Silva CAB, Barreto FDC. Recommendations for the diagnosis and management of Fabry disease in pediatric patients: a document from the Rare Diseases Committee of the Brazilian Society of Nephrology (Comdora-SBN). J Bras Nefrol 2022; 44:268-280. [PMID: 35238862 PMCID: PMC9269176 DOI: 10.1590/2175-8239-jbn-2021-0216] [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: 04/09/2021] [Accepted: 01/04/2022] [Indexed: 11/22/2022] Open
Abstract
Abstract Fabry disease (FD) is a genetic disease, with X-chromosome linked inheritance, due to variants in the GLA gene that encodes the α-galactosidase A (α-GAL) enzyme. The purpose of the present study was to create a consensus aiming to standardize the recommendations regarding the renal involvement of FD with guidelines on the diagnosis, screening, and treatment of pediatric patients. This consensus is an initiative of the Rare Diseases Committee (Comdora) of the Brazilian Society of Nephrology (SBN). Randomized controlled clinical studies and studies with real-life data added to the authors' experience were considered for this review. The result of this consensus was to help manage patient and physician expectations regarding treatment outcomes. Thus, this consensus document recommends the investigation of the pediatric family members of an index case, as well as cases with suggestive clinical signs. From the diagnosis, assess all possible FD impairments and grade through scales. From an extensive review of the literature including pediatric protocols and particularly evaluating pediatric cases from general studies, it can be concluded that the benefits of early treatment are great, especially in terms of neuropathic pain and renal impairment parameters and outweigh the possible adverse effects that were mainly manifested by infusion reactions.
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Silva CAB, Andrade LGMD, Vaisbich MH, Barreto FDC. Brazilian consensus recommendations for the diagnosis, screening, and treatment of individuals with fabry disease: Committee for Rare Diseases - Brazilian Society of Nephrology/2021. J Bras Nefrol 2022; 44:249-267. [PMID: 35212703 PMCID: PMC9269181 DOI: 10.1590/2175-8239-jbn-2021-0208] [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: 08/26/2021] [Accepted: 11/16/2021] [Indexed: 11/21/2022] Open
Abstract
Fabry disease (FD) is an X-linked inherited disorder caused by mutations in the GLA gene encoding enzyme alpha-galactosidase A (α-Gal A). The purpose of this study was to produce a consensus statement to standardize the recommendations concerning kidney involvement in FD and provide advice on the diagnosis, screening, and treatment of adult and pediatric patients. This consensus document was organized from an initiative led by the Committee for Rare Diseases (Comdora) of the Brazilian Society of Nephrology (SBN). The review considered randomized clinical trials, real-world data studies, and the expertise of its authors. The purpose of this consensus statement is to help manage patient and physician expectations concerning the outcomes of treatment. Our recommendations must be interpreted within the context of available evidence. The decisions pertaining to each individual case must be made with the involvement of patients and their families and take into account not only the potential cost of treatment, but also concurrent conditions and personal preferences. The Comdora intends to update these recommendations regularly so as to reflect recent literature evidence, real-world data, and appreciate the professional experience of those involved. This consensus document establishes clear criteria for the diagnosis of FD and for when to start or stop specific therapies or adjuvant measures, to thus advise the medical community and standardize clinical practice.
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Chimenz R, Chirico V, Cuppari C, Ceravolo G, Concolino D, Monardo P, Lacquaniti A. Fabry disease and kidney involvement: starting from childhood to understand the future. Pediatr Nephrol 2022; 37:95-103. [PMID: 33928440 DOI: 10.1007/s00467-021-05076-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/15/2021] [Accepted: 03/29/2021] [Indexed: 12/29/2022]
Abstract
The accumulation of globotriaosylceramide (Gb-3) in multiple organs, such as the heart, kidney, and nervous system, due to mutations in the galactosidase alpha (GLA) gene, represents the key point of Fabry disease (FD). The common symptoms appear in childhood or adolescence, including neuropathic pain, angiokeratoma, acroparesthesia, and corneal opacities. A multi-organ involvement induces a significant deterioration in the quality of life with high mortality in adulthood. The accumulation of Gb-3 involves all types of kidney cells beginning at fetal development, many years before clinical manifestations. A decline in the glomerular filtration rate is rare in children, but it can occur during adolescence. Pediatric patients rarely undergo kidney biopsy that could assess the efficacy of enzyme replacement therapy (ERT) behind its diagnostic role. To date, diagnosis is achieved by detecting reduced α-Gal-A activity in leukocytes and plasma, allowing for the early start of ERT. This review focuses on pediatric kidney involvement in FD, analyzing in depth its diagnostic processes and treatment options.
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Affiliation(s)
- Roberto Chimenz
- Pediatric Nephrology and Dialysis Unit, University Hospital "G. Martino", Messina, Italy.
| | - Valeria Chirico
- Unit of Pediatric Emergency, Department of Adult and Childhood Human Pathology, University Hospital of Messina, Messina, Italy
| | - Caterina Cuppari
- Unit of Pediatric Emergency, Department of Adult and Childhood Human Pathology, University Hospital of Messina, Messina, Italy
| | - Giorgia Ceravolo
- Unit of Pediatric Emergency, Department of Adult and Childhood Human Pathology, University Hospital of Messina, Messina, Italy
| | - Daniela Concolino
- Department of Science of Health, Pediatric Unit, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Paolo Monardo
- Nephrology and Dialysis Unit, Papardo Hospital, Messina, Italy
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Muntean C, Starcea IM, Stoica C, Banescu C. Clinical Characteristics, Renal Involvement, and Therapeutic Options of Pediatric Patients With Fabry Disease. Front Pediatr 2022; 10:908657. [PMID: 35722479 PMCID: PMC9198369 DOI: 10.3389/fped.2022.908657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/12/2022] [Indexed: 11/13/2022] Open
Abstract
Inherited renal diseases represent 20% of the causes of end-stage renal diseases. Fabry disease, an X-linked lysosomal storage disorder, results from α-galactosidase A deficient or absent activity followed by globotriaosylceramide (Gb3) accumulation and multiorgan involvement. In Fabry disease, kidney involvement starts early, during intrauterine life by the Gb3 deposition. Even if chronic kidney disease (CKD) is discovered later in adult life in Fabry disease patients, a decline in glomerular filtration rate (GFR) can occur during adolescence. The first clinical sign of kidney involvement is represented by albuminuria. So, early and close monitoring of kidneys function is required: albuminuria and proteinuria, urinary albumin-to-creatinine ratio, serum creatinine, or cystatin C to estimate GFR, while urinary sediment with phase-contrast microscopy under polarized light may be useful in those cases where leucocyte α-Gal A activity and GLA genotyping are not available. Children with Fabry disease and kidney involvement should receive enzyme replacement therapy and nephroprotective drugs (angiotensin-converting enzyme inhibitors or angiotensin receptor blockers) to prevent or slow the progressive loss of kidney functions. Early diagnosis of Fabry disease is important as enzyme replacement therapy reduces symptoms, improves clinical features and biochemical markers, and the quality of life. More importantly, early treatment could slow or stop progressive organ damage in later life.
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Affiliation(s)
- Carmen Muntean
- Department of Pediatrics I, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Targu Mures, Targu Mures, Romania
| | - Iuliana Magdalena Starcea
- Department of Pediatric Nephrology, Sf Maria Emergency Hospital for Children Iasi, University of Medicine and Pharmacy Grigore T. Popa Iasi, Iasi, Romania
| | - Cristina Stoica
- Pediatric Nephrology Department, Fundeni Clinical Institute, University of Medicine and Pharmacy Carol Davila Bucharest, Bucharest, Romania
| | - Claudia Banescu
- Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, Targu Mures, Romania
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Shen Q, Liu J, Chen J, Zhou S, Wang Y, Yu L, Sun L, Wang L, Wu B, Liu F, Cao Y, Huang Y, Wang J, Yang C, Zhu D, Ma Y, Xu Z, Lu W, Fu L, Zhou W, Xu H. Multidisciplinary approach to screening and management of children with Fabry disease: practice at a Tertiary Children's Hospital in China. Orphanet J Rare Dis 2021; 16:509. [PMID: 34906154 PMCID: PMC8670193 DOI: 10.1186/s13023-021-02136-1] [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: 09/10/2021] [Accepted: 11/28/2021] [Indexed: 12/24/2022] Open
Abstract
Background Fabry disease (FD) remains poorly recognized, especially in children in China. Considering the diversity and nonspecific clinical manifestations accompanying with life-threatening aspect of this disease, methods to improve effective screening and management of the suspects are needed. This study aims to explore how it can be done effectively from a multidisciplinary perspective for children with FD at a tertiary children’s hospital in China. Methods A multidisciplinary team (MDT) of pediatric FD experts was launched at Children’s Hospital of Fudan University. Children with high-risk characteristics were referred by the MDT screening team using the dried blood spot (DBS) triple-test (α-galactosidase A, globotriaosylsphingosine, GLA gene). For newborns who were undergoing genetic testing in the hospital, the GLA gene was listed as a routine analysis gene. Evaluation, family screening, and genetic counselling were implemented after screening by the MDT management team. Results Before the establishment of the MDT, no case was diagnosed with FD in the hospital. However, twelve months following the MDT program's implementation, thirty-five children with high-risk profiles were referred for screening by DBS triple-test, with a yield of diagnosis of 14.3% (5/35). These 5 diagnosed children were referred due to a high-risk profile of pain accompanied by dermatological angiokeratoma and hypohidrosis (n = 2), pain accompanied by abnormal liver function (n = 1), pain only (n = 1), and unexplained renal tubular dysfunction (n = 1). Two neonates were detected early with GLA mutations in the hospital, with a yield of detection of 0.14% (2/1420). Furthermore, another 3 children diagnosed with FD were referred from other hospitals. Family screening of these 10 diagnosed children indicated that 9 boys inherited it from their mothers and 1 girl inherited it from her father. Four of them started to receive enzyme replacement therapy. Conclusion Screening and management of children with FD is effective based on a defined screening protocol and a multidisciplinary approach. We should pay more attention to the high-risk profiles of pain, angiokeratoma, decreased sweating, and unexplained chronic kidney disease in children.
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Affiliation(s)
- Qian Shen
- Department of Nephrology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Jialu Liu
- Department of Nephrology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Jing Chen
- Department of Nephrology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Shuizheng Zhou
- Department of Neurology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Yi Wang
- Department of Neurology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Lifei Yu
- Department of Neurology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Li Sun
- Department of Rheumatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Liuhui Wang
- Department of Dermatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Bingbing Wu
- Clinical Genetic Center, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Fang Liu
- Pediatric Heart Center, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Yun Cao
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Ying Huang
- Department of Gastroenterology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Jianshe Wang
- Center for Pediatric Liver Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Chenhao Yang
- Department of Ophthalmology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Daqian Zhu
- Department of Psychology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Yangyang Ma
- Department of Pathology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Zhengmin Xu
- Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Wei Lu
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Lili Fu
- Department of Social Work, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Wenhao Zhou
- Clinical Genetic Center, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China.,Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Hong Xu
- Department of Nephrology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China.
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Alkhzouz C, Miclea D, Bucerzan S, Lazea C, Nascu I, Sido PG. Early clinical signs in lysosomal diseases. Med Pharm Rep 2021; 94:S43-S46. [PMID: 34527909 DOI: 10.15386/mpr-2228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Background and aim The lysosomal storage diseases are a group of monogenic diseases with multisystemic impairment and chronic progression induced by the deficiency of lysosomal acid hydrolases involved in the breakdown of various macromolecules. The accumulation occurs in the macrophages of the reticule-endothelial system and causes enlargement and functional impairment. The mainly involved organs are the brain, liver, spleen, bones, joints, airways, lungs, and heart. The aim of this study was to evaluate early symptoms, signs and the delay in the diagnosis of different lysosomal diseases. Methods The medical documentation of 188 patients with lysosomal storage disorders, aged 1-70 years, were analyzed. All these patients were specifically diagnosed, by enzyme and molecular assay. Results The age of clinical signs onset varies in different type of lysosomal diseases, from the first months of life or early childhood in severe form, to adulthood in attenuated forms. The delay between the clinical signs onset and specific diagnosis ranged from 0.5 months to 57.91 years. Conclusions The lysosomal storage diseases are rare diseases with childhood onset, but these early signs and symptoms are not recognized and are often taken into account when the vital organs damage becomes manifest.
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Affiliation(s)
- Camelia Alkhzouz
- Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Center of Expertise for Rare Diseases Lysosomal Diseases, Clinical Emergency Hospital for Children, Cluj, Romania
| | - Diana Miclea
- Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Center of Expertise for Rare Diseases Lysosomal Diseases, Clinical Emergency Hospital for Children, Cluj, Romania
| | - Simona Bucerzan
- Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Center of Expertise for Rare Diseases Lysosomal Diseases, Clinical Emergency Hospital for Children, Cluj, Romania
| | - Cecilia Lazea
- Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Center of Expertise for Rare Diseases Lysosomal Diseases, Clinical Emergency Hospital for Children, Cluj, Romania
| | - Ioana Nascu
- Center of Expertise for Rare Diseases Lysosomal Diseases, Clinical Emergency Hospital for Children, Cluj, Romania
| | - Paula Grigorescu Sido
- Center of Expertise for Rare Diseases Lysosomal Diseases, Clinical Emergency Hospital for Children, Cluj, Romania
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Phenocopies of sarcomere gene mediated hypertrophic cardiomyopathy in children. PROGRESS IN PEDIATRIC CARDIOLOGY 2021. [DOI: 10.1016/j.ppedcard.2021.101419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Bichet DG, Torra R, Wallace E, Hughes D, Giugliani R, Skuban N, Krusinska E, Feldt-Rasmussen U, Schiffmann R, Nicholls K. Long-term follow-up of renal function in patients treated with migalastat for Fabry disease. Mol Genet Metab Rep 2021; 28:100786. [PMID: 34401344 PMCID: PMC8353473 DOI: 10.1016/j.ymgmr.2021.100786] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 07/31/2021] [Indexed: 12/14/2022] Open
Abstract
The effect of migalastat on long-term renal outcomes in enzyme replacement therapy (ERT)-naive and ERT-experienced patients with Fabry disease is not well defined. An integrated posthoc analysis of the phase 3 clinical trials and open-label extension studies was conducted to evaluate long-term changes in renal function in patients with Fabry disease and amenable GLA variants who were treated with migalastat for ≥2 years during these studies. The analysis included ERT-naive (n = 36 [23 females]; mean age 45 years; mean baseline estimated glomerular filtration rate (eGFR), 91.4 mL/min/mL/1.73 m2) and ERT-experienced (n = 42 [24 females]; mean age, 50 years; mean baseline eGFR, 89.2 mL/min/1.73m2) patients with amenable variants who received migalastat 123 mg every other day for ≥2 years. The annualized rate of change from baseline to last observation in estimated glomerular filtration rate using the Chronic Kidney Disease Epidemiology Collaboration equation (eGFRCKD-EPI) was calculated by both simple linear regression and a random coefficient model. In ERT-naive patients, mean annualized rates of change from baseline in eGFRCKD-EPI were - 1.6 mL/min/1.73 m2 overall and - 1.8 mL/min/1.73 m2 and - 1.4 mL/min/1.73 m2 in male and female patients, respectively, as estimated by simple linear regression. In ERT-experienced patients, mean annualized rates of change from baseline in eGFRCKD-EPI were - 1.6 mL/min/1.73 m2 overall and - 2.6 mL/min/1.73 m2 and - 0.8 mL/min/1.73 m2 in male and female patients, respectively. Mean annualized rate of change in eGFRCKD-EPI in ERT-naive patients with the classic phenotype (defined by white blood cell alpha galactosidase A [α-Gal A] activity of <3% of normal and multiorgan system involvement) was -1.7 mL/min/1.73 m2. When calculated using the random coefficient model, which adjusted for sex, age, and baseline renal function, the annualized eGFRCKD-EPI change was minimal (mean: -0.1 and 0.1 mL/min/1.73 m2 in ERT-naive and ERT-experienced patients, respectively). In conclusion, patients with Fabry disease and amenable GLA variants receiving long-term migalastat treatment (≤8.6 years) maintained renal function irrespective of treatment status, sex, or phenotype.
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Affiliation(s)
- Daniel G Bichet
- Department of Medicine, Hôpital du Sacré-Coeur, University of Montréal, Montreal, Quebec, Canada
| | - Roser Torra
- Inherited Renal Disorders, Nephrology Department, Fundació Puigvert, REDINREN, IIB Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Eric Wallace
- Department of Medicine, University of Alabama, Birmingham, AL, USA
| | - Derralynn Hughes
- Lysosomal Storage Disorders Unit, Royal Free London NHS Foundation Trust and University College London, London, UK
| | - Roberto Giugliani
- Medical Genetics Service, Department of Genetics, Institute of Biosciences, Institute of Basic Health Sciences, Faculty of Medicine, Faculty of Pharmacy (UFRGS) and, National Institute of Population Medical Genetics (INAGEMP), Porto Alegre, Brazil
| | - Nina Skuban
- Amicus Therapeutics, Inc., Cranbury, NJ, USA
| | | | - Ulla Feldt-Rasmussen
- Department of Medical Endocrinology and Metabolism, Rigshospitalet, National University Hospital, Copenhagen University, Copenhagen, Denmark
| | - Raphael Schiffmann
- Institute of Metabolic Disease, Baylor Scott & White Research Institute, Dallas, TX, USA
| | - Kathy Nicholls
- Department of Nephrology, Royal Melbourne Hospital, University of Melbourne, Parkville, Victoria, Australia
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Huang X, Zhang L, Huang J, Cai J. A Rare Cause of Young Stroke: What Rheumatologists Should Know about Fabry Disease. JOURNAL OF CLINICAL RHEUMATOLOGY AND IMMUNOLOGY 2021. [DOI: 10.1142/s2661341721720032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Systemic vasculitis is a category of autoinflammatory diseases usually involving multiple organs. Involvement of the central nervous system (CNS) may mimic other disorders, hence resulting in overdiagnosis. This is a case report of a young man who presented with acrodynia, episodic pyrexia, and recurrent strokes. He was treated for systemic vasculitis with glucocorticoids and immunosuppressants, which failed to prevent the stroke. Finally, Fabry disease was diagnosed after [Formula: see text]-galactosidase A gene mutation analysis was done. Rheumatologists should be aware of Fabry disease, which may present with multi-system involvement that mimics vasculitis. To avoid inappropriate treatment, a comprehensive differential diagnosis should be considered before a diagnosis of primary systemic vasculitis is made. Recurrent strokes, especially in males younger than 40, should raise suspicions of Fabry disease.
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Affiliation(s)
- Xiaoyan Huang
- Department of Rheumatology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China
| | - Lijun Zhang
- Department of Rheumatology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China
| | - Jinxian Huang
- Department of Rheumatology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China
| | - Jifu Cai
- Department of Neurology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China
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Germain DP, Moiseev S, Suárez-Obando F, Al Ismaili F, Al Khawaja H, Altarescu G, Barreto FC, Haddoum F, Hadipour F, Maksimova I, Kramis M, Nampoothiri S, Nguyen KN, Niu DM, Politei J, Ro LS, Vu Chi D, Chen N, Kutsev S. The benefits and challenges of family genetic testing in rare genetic diseases-lessons from Fabry disease. Mol Genet Genomic Med 2021; 9:e1666. [PMID: 33835733 PMCID: PMC8172211 DOI: 10.1002/mgg3.1666] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 12/17/2022] Open
Abstract
Background Family genetic testing of patients newly diagnosed with a rare genetic disease can improve early diagnosis of family members, allowing patients to receive disease‐specific therapies when available. Fabry disease, an X‐linked lysosomal storage disorder caused by pathogenic variants in GLA, can lead to end‐stage renal disease, cardiac arrhythmias, and stroke. Diagnostic delays are common due to the rarity of the disease and non‐specificity of early symptoms. Newborn screening and screening of at‐risk populations, (e.g., patients with hypertrophic cardiomyopathy or undiagnosed nephropathies) can identify individuals with Fabry disease. Subsequent cascade genotyping of family members may disclose a greater number of affected individuals, often at younger age than they would have been diagnosed otherwise. Methods We conducted a literature search to identify all published data on family genetic testing for Fabry disease, and discussed these data, experts’ own experiences with family genetic testing, and the barriers to this type of screening that are present in their respective countries. Results There are potential barriers that make implementation of family genetic testing challenging in some countries. These include associated costs and low awareness of its importance, and cultural and societal issues. Regionally, there are barriers associated with population educational levels, national geography and infrastructures, and a lack of medical geneticists. Conclusion In this review, the worldwide experience of an international group of experts of Fabry disease highlights the issues faced in the family genetic testing of patients affected with rare genetic diseases.
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Affiliation(s)
- Dominique P Germain
- French Referral Center for Fabry disease, Division of Medical Genetics, University of Versailles, Montigny, France.,First Faculty of Medicine, Charles University, Prague, Czech Republic.,Faculty of Medicine, University of Puthisastra, Phnom Penh, Cambodia.,MetabERN Center for Rare Diseases, APHP - Paris Saclay University, Paris, France
| | - Sergey Moiseev
- Tareev Clinic of Internal Diseases, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Fernando Suárez-Obando
- Instituto de Genética Humana, Facultad de Medicina, Pontificia Universidad Javeriana, and Servicio de Genética, Hospital Universitario San Ignacio, Bogotá, Colombia
| | | | | | | | - Fellype C Barreto
- Service of Nephrology, Department of Internal Medicine, Federal University of Paraná, Curitiba, Brazil
| | - Farid Haddoum
- Centre Hospitalo-Universitaire Mustapha, Algiers, Algeria
| | | | | | | | - Sheela Nampoothiri
- Department of Pediatric Genetics, Amrita Institute of Medical Sciences & Research Centre, Kochi, India
| | - Khanh Ngoc Nguyen
- Center for Rare Diseases and Newborn Screening, Vietnam National Children's Hospital, Hanoi, Vietnam
| | - Dau-Ming Niu
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Pediatrics, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Juan Politei
- Neurology Department, Laboratorio Neuroquímica Dr Néstor Chamoles Buenos Aires, Buenos Aires, Argentina
| | - Long-Sun Ro
- Department of Neurology, Chang Gung Memorial Hospital-Linkou Medical Center, Taoyuan, Taiwan
| | - Dung Vu Chi
- Center for Rare Diseases and Newborn Screening, Vietnam National Children's Hospital, Hanoi, Vietnam
| | - Nan Chen
- Department of Nephrology, Institute of Nephrology, Ruijin Hospital, The Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - Sergey Kutsev
- Research Centre for Medical Genetics, Moscow, Russia
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Gastrointestinal Involvement in Anderson-Fabry Disease: A Narrative Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18063320. [PMID: 33807115 PMCID: PMC8005161 DOI: 10.3390/ijerph18063320] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/16/2021] [Accepted: 03/19/2021] [Indexed: 12/31/2022]
Abstract
Anderson-Fabry disease (FD) is an X-linked lysosomal storage disorder leading to a wide array of clinical manifestations. Among these, gastrointestinal (GI) symptoms such as abdominal pain, bloating, and diarrhea affect about half of the FD adults and more than half of FD children. GI symptoms could be the first manifestation of FD; however, being non-specific, they overlap with the clinical picture of other conditions, such as irritable bowel syndrome and inflammatory bowel disease. This common overlap is the main reason why FD patients are often unrecognized and diagnosis is delayed for many years. The present narrative review is aimed to promote awareness of the GI manifestations of FD amongst general practitioners and specialists and highlight the latest findings of this rare condition including diagnostic tools and therapies. Finally, we will discuss some preliminary data on a patient presenting with GI symptoms who turned to be affected by a variant of uncertain significance of alpha-galactosidase (GLA) gene.
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Peters H, Ellaway C, Nicholls K, Reardon K, Szer J. Treatable lysosomal storage diseases in the advent of disease-specific therapy. Intern Med J 2021; 50 Suppl 4:5-27. [PMID: 33210402 DOI: 10.1111/imj.15100] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Lysosomal storage diseases (LSD) comprise a rare and heterogeneous group of nearly 50 heritable metabolic disorders caused by mutations in proteins critical for cellular lysosomal function. Defects in the activity of these proteins in multiple organs leads to progressive intra-lysosomal accumulation of specific substrates, resulting in disruption of cellular functions, extracellular inflammatory responses, tissue damage and organ dysfunction. The classification and clinical presentation of different LSD are dependent on the type of accumulated substrate. Some clinical signs and symptoms are common across multiple LSD, while others are more specific to a particular syndrome. Due to the rarity and wide clinical diversity of LSD, identification and diagnosis can be challenging, and in many cases diagnosis is delayed for months or years. Treatments, such as enzyme replacement therapy, haemopoietic stem cell transplantation and substrate reduction therapy, are now available for some of the LSD. For maximum effect, therapy must be initiated prior to the occurrence of irreversible tissue damage, highlighting the importance of prompt diagnosis. Herein, we discuss the clinical presentation, diagnosis and treatment of four of the treatable LSD: Gaucher disease, Fabry disease, Pompe disease, and two of the mucopolysaccharidoses (I and II). For each disease, we present illustrative case studies to help increase awareness of their clinical presentation and possible treatment outcomes.
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Affiliation(s)
- Heidi Peters
- Department of Metabolic Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - Carolyn Ellaway
- Genetic Metabolic Disorders Service, Sydney Children's Hospital Network, Sydney, New South Wales, Australia.,The Disciplines of Child and Adolescent Health and Genomic Medicine, University of Sydney, Sydney, New South Wales, Australia
| | - Kathleen Nicholls
- Department of Nephrology, Royal Melbourne Hospital, Melbourne, Victoria, Australia.,Department of Medicine, University of Melbourne, Melbourne, Victoria, Australia
| | - Katrina Reardon
- Department of Neurology, St Vincent's Hospital, Melbourne, Victoria, Australia
| | - Jeff Szer
- Clinical Haematology, The Royal Melbourne Hospital, Melbourne, Victoria, Australia.,Clinical Haematology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Department of Medicine, University of Melbourne, Melbourne, Victoria, Australia
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36
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Silva CAB, Moura-Neto JA, Dos Reis MA, Vieira Neto OM, Barreto FC. Renal Manifestations of Fabry Disease: A Narrative Review. Can J Kidney Health Dis 2021; 8:2054358120985627. [PMID: 33786192 PMCID: PMC7960898 DOI: 10.1177/2054358120985627] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 11/20/2020] [Indexed: 12/14/2022] Open
Abstract
Purpose of review In this narrative review, we describe general aspects, histological alterations, treatment, and implications of Fabry disease (FD) nephropathy. This information should be used to guide physicians and patients in a shared decision-making process. Source of information Original peer-reviewed articles, review articles, and opinion pieces were identified from PubMed and Google Scholar databases. Only sources in English were accessed. Methods We performed a focused narrative review assessing the main aspects of FD nephropathy. The literature was critically analyzed from a theoretical and contextual perspective, and thematic analysis was performed. Key findings FD nephropathy is related to the progressive accumulation of GL3, which occurs in all types of renal cells. It is more prominent in podocytes, which seem to play an important role in the pathogenesis of this nephropathy. A precise detection of renal disorders is of fundamental importance because the specific treatment of FD is usually delayed, making reversibility unlikely and leading to a worse prognosis. Limitations As no formal tool was applied to assess the quality of the included studies, selection bias may have occurred. Nonetheless, we have attempted to provide a comprehensive review on the topic using current studies from experts in FD and extensive review of the literature.
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Affiliation(s)
| | | | - Marlene Antônia Dos Reis
- Nephropathology Service, General Pathology, Federal University of Triângulo Mineiro, Uberaba, Brazil
| | - Osvaldo Merege Vieira Neto
- Nephrology Service, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Fellype Carvalho Barreto
- Nephrology Service, Department of Internal Medicine, Federal University of Paraná, Curitiba, Brazil
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Variable clinical features of patients with Fabry disease and outcome of enzyme replacement therapy. Mol Genet Metab Rep 2020; 26:100700. [PMID: 33437642 PMCID: PMC7788237 DOI: 10.1016/j.ymgmr.2020.100700] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/22/2020] [Accepted: 12/22/2020] [Indexed: 12/29/2022] Open
Abstract
Fabry disease (FD) is an X-linked lysosomal storage disorder caused by a deficiency in the enzyme α-galactosidase A due to mutations in the GLA gene. This leads to an accumulation of globotriaosylceramide (GL-3) in many tissues, which results in progressive damage to the kidneys, heart, and nervous system. We present the molecular and clinical characteristics and long-term outcomes of FD patients from a multidisciplinary clinic at the University of California, Irvine treated with agalsidase beta enzyme replacement therapy (ERT) for 2-20 years. This cohort comprised 24 adults (11 males, 13 females) and two male children (median age 45; range 10-68 years). Of the 26 patients in this cohort, 20 were on ERT (12 males, 8 females). We describe one novel variant not previously reported in the literature in a patient with features of 'classic' FD. The vast majority of patients in this cohort presented with symptoms of 'classic' FD including peripheral neuropathic pain, some form of cardiac involvement, angiokeratomas, corneal verticillata, hypohidrosis, tinnitus, and gastrointestinal symptoms, primarily abdominal pain. The majority of males had clinically evident renal involvement. An annual eGFR reduction of -1.88 mL/min/1.73 m2/yr during the course of ERT was seen in this cohort. The most common renal presentation was proteinuria, and one individual required a renal transplant. Other common findings were pulmonary involvement, lymphedema, hearing loss, and significantly, three patients had strokes. Notably, there was a high prevalence of endocrine dysfunction and low bone mineral density, including several with osteoporosis. While enzyme replacement therapy (ERT) cleared plasma GL-3 in this cohort, there was limited improvement in renal function or health-related quality of life based on the patient-reported SF-36 Health Survey. Physical functioning significantly declined over the course of ERT treatment, which may be, in part, due to the late initiation of ERT in several patients. Further delineation of the phenotypic and genotypic spectrum in patients with FD and the long-term outcome of ERT will help improve management and treatment options for this disease.
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Nampoothiri S, Yesodharan D, Bhattacherjee A, Ahamed H, Puri RD, Gupta N, Kabra M, Ranganath P, Bhat M, Phadke S, Radha Rama Devi A, Jagadeesh S, Danda S, Sylaja PN, Mandal K, Bijarnia‐Mahay S, Makkar R, Verma IC, Dalal A, Ramaswami U. Fabry disease in India: A multicenter study of the clinical and mutation spectrum in 54 patients. JIMD Rep 2020; 56:82-94. [PMID: 33204599 PMCID: PMC7653245 DOI: 10.1002/jmd2.12156] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/14/2020] [Accepted: 07/20/2020] [Indexed: 11/18/2022] Open
Abstract
Fabry disease (FD) is a treatable X linked lysosomal storage disorder with a wide phenotypic spectrum. There is a scarcity of published data on the burden of FD in India. This study evaluates the clinical and molecular spectrum of Indian patients with FD. In this multicentric study involving 10 tertiary referral centers in India, we analyzed the clinical course and genotype of 54 patients from 37 families. Family screening identified 19 new patients (35%) from 12 index cases. Then, 33 GLA gene variants were identified in 49/54 (90.7%) which included 11 novel and 22 known pathogenic variants. Of the 54 patients in our cohort, 40 patients had "classical" and 10 patients had a "nonclassical" presentation. The symptoms and signs included kidney dysfunction in 38/54 (70.3%), neuropathic pain in 34/54 (62.9%), left ventricular hypertrophy in 22/49 (44.8%) and stroke in 5/54 (9.2%). Female heterozygotes were 10/54 (18.5%) of whom 2 were index cases. There was a significant delay in reaching the diagnosis of 11.7 years. Enzyme replacement therapy was initiated in 28/54 (51.8%) patients with significant improvement of neuropathic pain and gastrointestinal symptoms. This study highlights the clinical presentation and mutational spectrum of FD in India and suggests that family screening and screening of high-risk groups (hypertrophic cardiomyopathy, idiopathic chronic renal failure and cryptogenic stroke) could be the most cost-effective strategies for early identification of FD.
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Affiliation(s)
- Sheela Nampoothiri
- Department of Pediatric GeneticsAmrita Institute of Medical Sciences and Research CentreCochinKeralaIndia
| | - Dhanya Yesodharan
- Department of Pediatric GeneticsAmrita Institute of Medical Sciences and Research CentreCochinKeralaIndia
| | - Amrita Bhattacherjee
- Diagnostics DivisionCentre for DNA Fingerprinting and Diagnostics (CDFD)HyderabadIndia
| | - Hisham Ahamed
- Department of CardiologyAmrita Institute of Medical Sciences and Research CentreCochinKeralaIndia
| | - Ratna Dua Puri
- Institute of Genetics and GenomicsSir Ganga Ram HospitalNew DelhiIndia
| | - Neerja Gupta
- Division of Genetics, Department of PediatricsAll India Institute of Medical SciencesNew DelhiIndia
| | - Madhulika Kabra
- Division of Genetics, Department of PediatricsAll India Institute of Medical SciencesNew DelhiIndia
| | - Prajnya Ranganath
- Department of Medical GeneticsNizam's Institute of Medical SciencesHyderabadIndia
| | - Meenakshi Bhat
- Department of Clinical GeneticsCentre for Human GeneticsBangaloreIndia
| | - Shubha Phadke
- Department of Medical GeneticsSanjay Gandhi Postgraduate Institute of Medical SciencesLucknowIndia
| | | | - Sujatha Jagadeesh
- Department of Clinical Genetics and Genetic CounselingMediscan SystemsChennaiIndia
| | - Sumita Danda
- Department of Clinical GeneticsChristian Medical College and HospitalVelloreIndia
| | - Padmavathy Narayana Sylaja
- Comprehensive Stroke Care Program, Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST)TrivandrumKeralaIndia
| | - Kausik Mandal
- Department of Medical GeneticsSanjay Gandhi Postgraduate Institute of Medical SciencesLucknowIndia
| | | | | | | | - Ashwin Dalal
- Diagnostics DivisionCentre for DNA Fingerprinting and Diagnostics (CDFD)HyderabadIndia
| | - Uma Ramaswami
- Lysosomal Disorders Unit, Institute of Immunity and TransplantationRoyal Free London NHS Foundation TrustLondonUK
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Hopkin RJ, Feldt-Rasmussen U, Germain DP, Jovanovic A, Martins AM, Nicholls K, Ortiz A, Politei J, Ponce E, Varas C, Weidemann F, Yang M, Wilcox WR. Improvement of gastrointestinal symptoms in a significant proportion of male patients with classic Fabry disease treated with agalsidase beta: A Fabry Registry analysis stratified by phenotype. Mol Genet Metab Rep 2020; 25:100670. [PMID: 33163363 PMCID: PMC7606866 DOI: 10.1016/j.ymgmr.2020.100670] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 10/12/2020] [Accepted: 10/12/2020] [Indexed: 12/22/2022] Open
Abstract
Background Fabry disease is an inherited disorder of glycolipid metabolism with progressive involvement of multiple organs, including the gastrointestinal tract, in classically affected male patients. Clinical presentations in males with later-onset Fabry phenotypes are more heterogeneous and largely dependent on the level of residual α-galactosidase A activity. Methods We assessed agalsidase beta treatment outcomes of gastrointestinal symptoms in adult males with classic or later-onset Fabry disease. Self-reports of abdominal pain and diarrhea ('present'/'not present' since previous assessment) at last clinical visit (≥0.5 year of follow-up) were compared with treatment-baseline. Results Classic male patients were considerably younger at first treatment than the fewer males with later-onset phenotypes (36 vs. ~47 years) and reported gastrointestinal symptoms more frequently at baseline (abdominal pain: 56% vs. 13%; diarrhea: 57% vs. 23%). As compared with baseline, significantly fewer classic patients reported abdominal pain after a median of 4.7 years of treatment (N = 171, 56% vs. 41%, P < 0.001). Moreover, significantly fewer patients reported diarrhea after 5.5 years of follow-up (N = 169, 57% vs. 47%, P < 0.05). Among the males with later-onset phenotypes, albeit statistically non-significant, abdominal pain reports reduced after a median of 4.2 years (N = 48, 13% vs. 4%) and diarrhea reports reduced after a median of 4.4 years of treatment (N = 47, 23% vs. 13%). Conclusions Sustained treatment with agalsidase beta was associated with improvement in abdominal pain and diarrhea in a significant proportion of classic male Fabry patients. Males with later-onset phenotypes reported gastrointestinal symptoms much less frequently at baseline as compared with classic patients, and non-significant reductions were observed.
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Affiliation(s)
- Robert J. Hopkin
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Corresponding author at: Division of Human Genetics, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., ML 4006, Cincinnati, OH 45229-3039, USA.
| | - Ulla Feldt-Rasmussen
- Department of Medical Endocrinology and Metabolism, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Dominique P. Germain
- French Referral Centre for Fabry disease, Division of Medical Genetics, Paris Saclay University, Garches, France
| | - Ana Jovanovic
- The Mark Holland Unit, Department of Endocrinology and Metabolic Medicine, Salford Royal NHS Foundation Trust, Salford, UK
| | - Ana Maria Martins
- Reference Center for Inborn Errors of Metabolism, Federal University of São Paulo, São Paulo, Brazil
| | - Kathleen Nicholls
- Department of Nephrology, Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Alberto Ortiz
- Unidad de Dialisis, IIS-Fundación Jiménez Díaz, UAM, IRSIN and REDINREN, Madrid, Spain
| | - Juan Politei
- Neurology Department, Fundación para el Estudio de las Enfermedades Neurometabólicas (FESEN), Buenos Aires, Argentina
| | - Elvira Ponce
- Global Medical Affairs Rare Diseases, Sanofi Genzyme, Cambridge, MA, USA
| | - Carmen Varas
- Fabry Disease Multidisciplinary Team, Hospital San Pablo de Coquimbo, Coquimbo, Chile
| | - Frank Weidemann
- Medical Clinic I, Klinikum Vest, Knappschaftskrankenhaus, Recklinghausen, Germany
| | - Meng Yang
- Epidemiology & Biostatistics, Sanofi Genzyme, Cambridge, MA, USA
| | - William R. Wilcox
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
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Hughes DA, Aguiar P, Deegan PB, Ezgu F, Frustaci A, Lidove O, Linhart A, Lubanda JC, Moon JC, Nicholls K, Niu DM, Nowak A, Ramaswami U, Reisin R, Rozenfeld P, Schiffmann R, Svarstad E, Thomas M, Torra R, Vujkovac B, Warnock DG, West ML, Johnson J, Rolfe MJ, Feriozzi S. Early indicators of disease progression in Fabry disease that may indicate the need for disease-specific treatment initiation: findings from the opinion-based PREDICT-FD modified Delphi consensus initiative. BMJ Open 2020; 10:e035182. [PMID: 33039984 PMCID: PMC7549469 DOI: 10.1136/bmjopen-2019-035182] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES The PRoposing Early Disease Indicators for Clinical Tracking in Fabry Disease (PREDICT-FD) initiative aimed to reach consensus among a panel of global experts on early indicators of disease progression that may justify FD-specific treatment initiation. DESIGN AND SETTING Anonymous feedback from panellists via online questionnaires was analysed using a modified Delphi consensus technique. Questionnaires and data were managed by an independent administrator directed by two non-voting cochairs. First, possible early indicators of renal, cardiac and central/peripheral nervous system (CNS/PNS) damage, and other disease and patient-reported indicators assessable in routine clinical practice were compiled by the cochairs and administrator from panellists' free-text responses. Second, the panel scored indicators for importance (5-point scale: 1=not important; 5=extremely important); indicators scoring ≥3 among >75% of panellists were then rated for agreement (5-point scale: 1=strongly disagree; 5=strongly agree). Indicators awarded an agreement score ≥4 by >67% of panellists achieved consensus. Finally, any panel-proposed refinements to consensus indicator definitions were adopted if >75% of panellists agreed. RESULTS A panel of 21 expert clinicians from 15 countries provided information from which 83 possible current indicators of damage (kidney, 15; cardiac, 15; CNS/PNS, 13; other, 16; patient reported, 24) were compiled. Of 45 indicators meeting the importance criteria, consensus was reached for 29 and consolidated as 27 indicators (kidney, 6; cardiac, 10; CNS/PNS, 2; other, 6; patient reported, 3) including: (kidney) elevated albumin:creatinine ratio, histological damage, microalbuminuria; (cardiac) markers of early systolic/diastolic dysfunction, elevated serum cardiac troponin; (CNS/PNS) neuropathic pain, gastrointestinal symptoms suggestive of gastrointestinal neuropathy; (other) pain in extremities/neuropathy, angiokeratoma; (patient-reported) febrile crises, progression of symptoms/signs. Panellists revised and approved proposed chronologies of when the consensus indicators manifest. The panel response rate was >95% at all stages. CONCLUSIONS PREDICT-FD captured global opinion regarding current clinical indicators that could prompt FD-specific treatment initiation earlier than is currently practised.
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Affiliation(s)
- Derralynn A Hughes
- Lysosomal Storage Disorders Unit, Royal Free Hospital, London, UK
- Department of Haematology, University College London, London, UK
| | - Patricio Aguiar
- Inborn Errors of Metabolism Reference Center, North Lisbon Hospital Center, Lisbon, Portugal
- Medicine Department, University of Lisbon, Lisbon, Portugal
| | - Patrick B Deegan
- Lysosomal Disorders Unit, Addenbrooke's Hospital, Cambridge, UK
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Fatih Ezgu
- Department and Laboratory of Paediatric Metabolic Disorders, Gazi University, Ankara, Turkey
| | - Andrea Frustaci
- Department of Cardiovascular, Respiratory, Nephrologic, Geriatric and Anesthesiologic Sciences, University of Rome La Sapienza, Rome, Italy
| | - Olivier Lidove
- Department of Internal Medicine-Rheumatology, Croix Saint Simon Hospital, Paris, France
| | - Aleš Linhart
- Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Jean-Claude Lubanda
- Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - James C Moon
- Cardiac Imaging Department, Barts Heart Centre, London, UK
| | - Kathleen Nicholls
- Department of Nephrology, Royal Melbourne Hospital, Parkville, Victoria, Australia
- Department of Medicine, The University of Melbourne - Parkville Campus, Melbourne, Victoria, Australia
| | - Dau-Ming Niu
- Department of Pediatrics, Taipei Veterans General Hospital, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Albina Nowak
- Department of Endocrinology and Clinical Nutrition, University Hospital Zurich and University of Zurich, Zurich, Switzerland
- Department of Internal Medicine, Psychiatry University Hospital Zurich, Zurich, Switzerland
| | - Uma Ramaswami
- Lysosomal Storage Disorders Unit, Royal Free Hospital, London, UK
| | - Ricardo Reisin
- Department of Neurology, British Hospital of Buenos Aires, Buenos Aires, Argentina
| | - Paula Rozenfeld
- Instituto de Estudios Inmunológicos y Fisiopatológicos, UNLP - CONICET, La Plata, Argentina
| | - Raphael Schiffmann
- Institute of Metabolic Disease, Baylor Research Institute, Dallas, Texas, USA
| | - Einar Svarstad
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Department of Medicine, Haukeland University Hospital, Bergen, Norway
| | - Mark Thomas
- Department of Nephrology, Royal Perth Hospital, Perth, Western Australia, Australia
| | - Roser Torra
- Inherited Renal Diseases Unit, Autonomous University of Barcelona, Barcelona, Spain
| | - Bojan Vujkovac
- Department of Internal Medicine, General Hospital Slovenj Gradec, Slovenj Gradec, Slovenia
| | - David G Warnock
- Division of Nephrology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Michael L West
- Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Jack Johnson
- Fabry Support & Information Group, Concordia, Missouri, USA
- Fabry International Network, Beveren, Belgium
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Henderson N, Berry L, Laney DA. Fabry Disease practice resource: Focused revision. J Genet Couns 2020; 29:715-717. [DOI: 10.1002/jgc4.1318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Nadene Henderson
- Division of Medical Genetics UPMC Children’s Hospital of Pittsburgh Pittsburgh PA USA
| | - Lisa Berry
- Division of Human Genetics Cincinnati Children's Hospital Medical Center Cincinnati OH USA
| | - Dawn A. Laney
- Department of Human Genetics Emory School of Medicine Atlanta GA USA
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Wu C, Iwamoto T, Hossain MA, Akiyama K, Igarashi J, Miyajima T, Eto Y. A combination of 7-ketocholesterol, lysosphingomyelin and bile acid-408 to diagnose Niemann-Pick disease type C using LC-MS/MS. PLoS One 2020; 15:e0238624. [PMID: 32898135 PMCID: PMC7478639 DOI: 10.1371/journal.pone.0238624] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 08/20/2020] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Niemann-Pick disease type C (NPC) is an autosomal recessive disorder caused by mutations of NPC1 or NPC2, which encode the proteins that are responsible for intracellular cholesterol trafficking. Loss of this function results in the accumulation of cholesterol-related products, such as oxysterols, sphingolipids, and NPC-related bile acids, which were recently used as biochemical biomarkers for the diagnosis of NPC. Bile acid-408 is a new significant compound we found in Japanese NPC patients, and it likely belongs to the category of bile acids. However, the diagnosis of NPC using a single biomarker is not satisfactory for clinical application because of the high instance of false negatives or positives. Therefore, we proposed an application of NPC diagnosis using a combination of 7-ketocholesterol (7-KC), lysosphingomyelin (lysoSM), bile acid-408 and/or glucosylsphingosine (lysoGL-1). METHODS AND FINDINGS 7-KC, lysoSM and lysoGL-1 in sera and bile acid-408 in dried blood spots (DBS) were quantified within 17 minutes using tandem mass spectrometry and high-resolution mass spectrometry, respectively. We measured these biomarkers in NPC patients (n = 19), X-linked adrenoleukodystrophy (X-ALD) patients (n = 5), patients with other lysosomal diseases (n = 300), newborns (n = 124) and healthy people (n = 74). Our results showed a promising accuracy (97%) for NPC diagnosis using the combination of 7-KC, lysoSM and bile acid-408. However, contrary to our expectations, lysoGL-1 levels did not present at a significantly greater amount in NPC patients than other patients and negative controls. CONCLUSIONS The combination of 7-KC, lysoSM and bile acid-408 improves the accuracy of NPC diagnosis and is feasible for mass screening due to its simple sample preparation and measurement. Future research should investigate the chemical structure of bile acid-408 to further facilitate its advantage in diagnosis.
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Affiliation(s)
- Chen Wu
- Advanced Clinical Research Center, Institute of Neurological Disorders, Shin-Yurigaoka General Hospital, Kawasaki, Kanagawa, Japan
- Rare Disease Research Center, AnGes, Kawasaki, Kanagawa, Japan
| | - Takeo Iwamoto
- Core Research Facilities for Basic Science, The Jikei University School of Medicine, Tokyo, Japan
| | - Mohammad Arif Hossain
- Advanced Clinical Research Center, Institute of Neurological Disorders, Shin-Yurigaoka General Hospital, Kawasaki, Kanagawa, Japan
| | - Keiko Akiyama
- Advanced Clinical Research Center, Institute of Neurological Disorders, Shin-Yurigaoka General Hospital, Kawasaki, Kanagawa, Japan
| | - Junko Igarashi
- Rare Disease Research Center, AnGes, Kawasaki, Kanagawa, Japan
| | - Takashi Miyajima
- Advanced Clinical Research Center, Institute of Neurological Disorders, Shin-Yurigaoka General Hospital, Kawasaki, Kanagawa, Japan
- Rare Disease Research Center, AnGes, Kawasaki, Kanagawa, Japan
| | - Yoshikatsu Eto
- Advanced Clinical Research Center, Institute of Neurological Disorders, Shin-Yurigaoka General Hospital, Kawasaki, Kanagawa, Japan
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Forstenpointner J, Berry D, Baron R, Borsook D. The cornucopia of central disinhibition pain - An evaluation of past and novel concepts. Neurobiol Dis 2020; 145:105041. [PMID: 32800994 DOI: 10.1016/j.nbd.2020.105041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/18/2020] [Accepted: 08/08/2020] [Indexed: 12/12/2022] Open
Abstract
Central disinhibition (CD), as applied to pain, decreases thresholds of endogenous systems. This provokes onset of spontaneous or evoked pain in an individual beyond the ability of the nervous system to inhibit pain resulting from a disease or tissue damage. The original CD concept as proposed by Craig entails a shift from the lateral pain pathway (i.e. discriminative pain processing) towards the medial pain pathway (i.e. emotional pain processing), within an otherwise neurophysiological intact environment. In this review, the original CD concept as proposed by Craig is extended by the primary "nociceptive pathway damage - CD" concept and the secondary "central pathway set point - CD". Thereby, the original concept may be transferred into anatomical and psychological non-functional conditions. We provide examples for either primary or secondary CD concepts within different clinical etiologies as well as present surrogate models, which directly mimic the underlying pathophysiology (A-fiber block) or modulate the CD pathway excitability (thermal grill). The thermal grill has especially shown promising advancements, which may be useful to examine CD pathway activation in the future. Therefore, within this topical review, a systematic review on the thermal grill illusion is intended to stimulate future research. Finally, the authors review different mechanism-based treatment approaches to combat CD pain.
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Affiliation(s)
- Julia Forstenpointner
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Campus Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany; Center for Pain and the Brain, Boston Children's Hospital, Department of Anesthesia, Critical Care and Pain Medicine, Harvard Medical School, Boston, MA, USA.
| | - Delany Berry
- Center for Pain and the Brain, Boston Children's Hospital, Department of Anesthesia, Critical Care and Pain Medicine, Harvard Medical School, Boston, MA, USA
| | - Ralf Baron
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Campus Kiel, Arnold-Heller-Str. 3, 24105 Kiel, Germany
| | - David Borsook
- Center for Pain and the Brain, Boston Children's Hospital, Department of Anesthesia, Critical Care and Pain Medicine, Harvard Medical School, Boston, MA, USA
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Greillier S, Daniel L, Caillaud C, Dussol B, Touchard G, Goujon JM, Jourde-Chiche N, Bobot M. First phenotypic description of a female patient with c.610 T > C variant of GLA: a renal-predominant presentation of Fabry disease. BMC MEDICAL GENETICS 2020; 21:137. [PMID: 32590976 PMCID: PMC7320597 DOI: 10.1186/s12881-020-01071-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 06/17/2020] [Indexed: 01/19/2023]
Abstract
Background Fabry disease (FD) is an X-linked lysosomal storage disorder due to deficient alpha-galactosidase activity leading to intracellular glycosphingolipid accumulation. Multiple variants have been reported in the GLA gene coding for alpha-galactosidase, and the question of the pathogenicity of rare variants needs to be addressed, especially in patients with mild phenotypes. Case presentation The patient, a 37-year-old female, presented with a persistent proteinuria after an otherwise uncomplicated first pregnancy. Renal biopsy showed both mild mesangial IgA deposits, and a striking vacuolization of podocytes and tubular cells consistent with Fabry disease. On electron microscopy, discrete but characteristic pseudo-myelinic lamellar inclusions were observed in the podocytes’ lysosomes. A more detailed physical examination revealed an angiokeratoma, and medical history ancient acroparesthesia. There was no cardiac or cerebral involvement of Fabry disease on magnetic resonance imaging. While blood enzymatic activity of alpha-ga lactosidase was normal in this patient, lysoGb3 was elevated (3 N), and a rare heterozygous variant called c.610 T > C was documented in GLA gene. The patient was treated with an ACE inhibitor, with a rapid decrease in proteinuria. After a 5-year follow-up, her renal function has remained normal, with mild proteinuria, and normal cardiac echography. Conclusions We report and phenotypically describe the first case of a Fabry disease female patient carrying the GLA c.610 T > C variant associated with a renal-predominant clinical presentation.
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Affiliation(s)
- Sophie Greillier
- AP-HM, Centre de Néphrologie et Transplantation Rénale, CHU de la Conception, AP-HM, Marseille, France
| | - Laurent Daniel
- Aix-Marseille Univ, C2VN, INSERM, INRAE, Marseille, France.,AP-HM, Laboratoire d'Anatomie Pathologique, CHU de la Timone, Marseille, France
| | - Catherine Caillaud
- Laboratoire de Biochimie, Métabolomique et Protéomique, AP-HP. Centre-Université de Paris, Hôpital Necker-Enfants Malades, Paris, France
| | - Bertrand Dussol
- AP-HM, Centre de Néphrologie et Transplantation Rénale, CHU de la Conception, AP-HM, Marseille, France.,Aix-Marseille Univ, C2VN, INSERM, INRAE, Marseille, France
| | - Guy Touchard
- Laboratoire d'Anatomie Pathologique, CHU de Poitiers, Poitiers, France
| | | | - Noémie Jourde-Chiche
- AP-HM, Centre de Néphrologie et Transplantation Rénale, CHU de la Conception, AP-HM, Marseille, France.,Aix-Marseille Univ, C2VN, INSERM, INRAE, Marseille, France
| | - Mickaël Bobot
- AP-HM, Centre de Néphrologie et Transplantation Rénale, CHU de la Conception, AP-HM, Marseille, France. .,Aix-Marseille Univ, C2VN, INSERM, INRAE, Marseille, France.
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Ortiz A, Kanters S, Hamed A, DasMahapatra P, Poggio E, Maski M, Aguiar M, Ponce E, Jansen JP, Ayers D, Goldgrub R, Desnick RJ. Agalsidase beta treatment slows estimated glomerular filtration rate loss in classic Fabry disease patients: results from an individual patient data meta-analysis. Clin Kidney J 2020; 14:1136-1146. [PMID: 33841859 PMCID: PMC8023189 DOI: 10.1093/ckj/sfaa065] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 03/26/2020] [Indexed: 01/07/2023] Open
Abstract
Background Fabry disease is a rare, X-linked genetic disorder that, if untreated in patients with the Classic phenotype, often progresses to end-stage kidney disease. This meta-analysis determined the effect of agalsidase beta on loss of estimated glomerular filtration rate (eGFR) in the Classic phenotype using an expansive evidence base of individual patient-level data. Methods The evidence base included four Sanofi-Genzyme studies and six studies from a systematic literature review. These were restricted to Classic Fabry patients meeting the eligibility criteria from Phases III and IV agalsidase beta trials, including 315 patients (161 treated). Linear regression was first used to model annual change in eGFR for each patient and the resulting annualized eGFR slopes were modelled with treatment and covariates using quantile regression. These results were then used to estimate median annualized eGFR change in agalsidase beta treated versus untreated groups. Results Imbalances across treatment groups were found in baseline age, sex and proteinuria, but not in the use of renin–angiotensin system blockers. The adjusted model suggests that treated (agalsidase beta) patients experienced a slower median eGFR decrease [2.46 mL/min/1.73 m2/year slower; 95% confidence interval (CI) 0.63–4.29; P = 0.0087] than comparable untreated patients. The median eGFR decrease was 2.64 mL/min/1.73 m2/year slower (95% CI 0.53–4.78; P = 0.0141) in treated Classic males. Conclusions Using an expansive evidence base and robust modelling approach, these data indicate that agalsidase beta-treated patients with the Classic phenotype conserve their renal function better than untreated patients.
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Affiliation(s)
- Alberto Ortiz
- Unidad de Diálisis, IIS-Fundación Jiménez Díaz, School of Medicine, UAM, IRSIN and REDINREN, Madrid, Spain
| | - Steve Kanters
- Evidence Synthesis and Decision Modeling, Precision HEOR, Vancouver, BC, Canada
| | - Alaa Hamed
- Sanofi Genzyme Health Economics and Value Assessment, Genzyme, Cambridge, MA, USA
| | | | | | - Manish Maski
- Sanofi Genzyme Medical Affairs, Genzyme, Cambridge, MA, USA
| | - Mario Aguiar
- Sanofi Genzyme Medical Affairs, Genzyme, Cambridge, MA, USA
| | - Elvira Ponce
- Sanofi Genzyme Medical Affairs, Genzyme, Cambridge, MA, USA
| | - Jeroen P Jansen
- Evidence Synthesis and Decision Modeling, Precision HEOR, Oakland, CA, USA
| | - Dieter Ayers
- Evidence Synthesis and Decision Modeling, Precision HEOR, Vancouver, BC, Canada
| | - Rachel Goldgrub
- Evidence Synthesis and Decision Modeling, Precision HEOR, Vancouver, BC, Canada
| | - Robert J Desnick
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Could nutritional therapy take us further in our approaches to Fabry disease? Nutrition 2019; 72:110664. [PMID: 31972420 DOI: 10.1016/j.nut.2019.110664] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 09/27/2019] [Accepted: 11/26/2019] [Indexed: 12/11/2022]
Abstract
Fabry disease (FD) is an X-linked lysosomal storage disorder caused by mutations in the GLA gene that result in deficiency of enzyme α-galactosidase A activity. Clinical manifestation varies from mild to severe depending on the phenotype. The main clinical manifestations are cutaneous (angiokeratomas), neurologic (acroparesthesias), gastrointestinal (nausea, diarrhea, and abdominal pain), renal (proteinuria and kidney failure), cardiovascular (cardiomyopathy and arrhythmias), and cerebrovascular (stroke). Enzyme replacement therapy with recombinant human α-galactosidase is currently the therapeutic option for FD. Although enzyme replacement therapy has changed the natural history of disease, many clinical aspects of FD require an additional specific treatment. Nutritional approach is mostly indicated in case of nephropathy and gastrointestinal symptoms. Specific dietary interventions can modulate some pathogenetic mechanisms of the disease, such as the inflammation, oxidative stress, and autophagic disorders. However, to our knowledge, limited attention has been given to the nutritional aspects of FD. The aim of this review is to examine nutritional strategies that might interfere with several pathophysiologic aspects of FD, including inflammation and oxidative stress. A dietary approach should be part of the basic treatment in renal manifestations of FD. Dietary measures recommended for irritable bowel syndrome could be recommended for gastrointestinal symptoms. Dietary factors can modulate the inflammation, oxidative stress, and autophagy involved in FD. Polyphenols, ω-3 fatty acids, microbiota, and specific dietary patterns can interfere with inflammation/oxidative stress and autophagy mechanisms and could also contribute to the slowing of FD progression.
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Kritzer A, Siddharth A, Leestma K, Bodamer O. Early initiation of enzyme replacement therapy in classical Fabry disease normalizes biomarkers in clinically asymptomatic pediatric patients. Mol Genet Metab Rep 2019; 21:100530. [PMID: 31660293 PMCID: PMC6807367 DOI: 10.1016/j.ymgmr.2019.100530] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 10/03/2019] [Indexed: 12/20/2022] Open
Abstract
Fabry disease is an X-linked lysosomal storage disorder which often presents with renal, cardiac, gastrointestinal, and nervous system abnormalities. Available enzyme replacement therapies have demonstrated efficacy at significantly reducing elevated biomarkers associated with increased disease activity, while improving the clinical symptoms associated with Fabry disease. In two cases with classical Fabry disease, we demonstrate that the initiation of enzyme replacement therapy prior to the onset of overt clinical disease is well tolerated and effectively reduces elevated biomarkers, mitigating unnecessary organ damage that may occur prior to the onset of clinical manifestations of disease. This proactive approach should be considered as a best-practice management strategy which has the potential to significantly improve health outcomes in patients with classical Fabry patients, particularly in the context of newborn screening for Fabry disease.
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Affiliation(s)
- Amy Kritzer
- Division of Genetics and Genomics, Department of Pediatrics, Boston Children's Hospital, Boston, MA, United States of America
| | - Aishwarya Siddharth
- Division of Genetics and Genomics, Department of Pediatrics, Boston Children's Hospital, Boston, MA, United States of America
| | - Kate Leestma
- Division of Genetics and Genomics, Department of Pediatrics, Boston Children's Hospital, Boston, MA, United States of America
| | - Olaf Bodamer
- Division of Genetics and Genomics, Department of Pediatrics, Boston Children's Hospital, Boston, MA, United States of America.,Broad Institute of Harvard University and MIT, Cambridge, MA, United States of America
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Doykov ID, Heywood WE, Nikolaenko V, Śpiewak J, Hällqvist J, Clayton PT, Mills P, Warnock DG, Nowak A, Mills K. Rapid, proteomic urine assay for monitoring progressive organ disease in Fabry disease. J Med Genet 2019; 57:38-47. [PMID: 31519711 DOI: 10.1136/jmedgenet-2019-106030] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 07/04/2019] [Accepted: 07/24/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND Fabry disease is a progressive multisystemic disease, which affects the kidney and cardiovascular systems. Various treatments exist but decisions on how and when to treat are contentious. The current marker for monitoring treatment is plasma globotriaosylsphingosine (lyso-Gb3), but it is not informative about the underlying and developing disease pathology. METHODS We have created a urine proteomic assay containing a panel of biomarkers designed to measure disease-related pathology which include the inflammatory system, lysosome, heart, kidney, endothelium and cardiovascular system. Using a targeted proteomic-based approach, a series of 40 proteins for organ systems affected in Fabry disease were multiplexed into a single 10 min multiple reaction monitoring Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS) assay and using only 1 mL of urine. RESULTS Six urinary proteins were elevated in the early-stage/asymptomatic Fabry group compared with controls including albumin, uromodulin, α1-antitrypsin, glycogen phosphorylase brain form, endothelial protein receptor C and intracellular adhesion molecule 1. Albumin demonstrated an increase in urine and could indicate presymptomatic disease. The only protein elevated in the early-stage/asymptomatic patients that continued to increase with progressive multiorgan involvement was glycogen phosphorylase brain form. Podocalyxin, fibroblast growth factor 23, cubulin and Alpha-1-Microglobulin/Bikunin Precursor (AMBP) were elevated only in disease groups involving kidney disease. Nephrin, a podocyte-specific protein, was elevated in all symptomatic groups. Prosaposin was increased in all symptomatic groups and showed greater specificity (p<0.025-0.0002) according to disease severity. CONCLUSION This work indicates that protein biomarkers could be helpful and used in conjunction with plasma lyso-Gb3 for monitoring of therapy or disease progression in patients with Fabry disease.
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Affiliation(s)
- Ivan D Doykov
- Centre for Inborn Errors of Metabolism, UCL Institute of Child Health Library, London, UK
| | - Wendy E Heywood
- Centre for Inborn Errors of Metabolism, UCL Institute of Child Health Library, London, UK.,NIHR Great Ormond Street Biomedical Research Centre, Great Ormond Street Hospital and UCL Great Ormond Street Institute of Child Health, London, UK
| | - Valeria Nikolaenko
- Centre for Inborn Errors of Metabolism, UCL Institute of Child Health Library, London, UK.,NIHR Great Ormond Street Biomedical Research Centre, Great Ormond Street Hospital and UCL Great Ormond Street Institute of Child Health, London, UK
| | - Justyna Śpiewak
- Centre for Inborn Errors of Metabolism, UCL Institute of Child Health Library, London, UK
| | - Jenny Hällqvist
- Centre for Inborn Errors of Metabolism, UCL Institute of Child Health Library, London, UK
| | - Peter Theodore Clayton
- Centre for Inborn Errors of Metabolism, UCL Institute of Child Health Library, London, UK
| | - Philippa Mills
- Centre for Inborn Errors of Metabolism, UCL Institute of Child Health Library, London, UK
| | - David G Warnock
- Division of Nephrology, Department of Medicine, University of Alabama, Birmingham, Alabama, USA
| | - Albina Nowak
- Department of Endocrinology and Clinical Nutrition, University Hospital Zurich and University of Zurich, Raemistrasse, Zurich, Switzerland
| | - Kevin Mills
- Centre for Inborn Errors of Metabolism, UCL Institute of Child Health Library, London, UK .,NIHR Great Ormond Street Biomedical Research Centre, Great Ormond Street Hospital and UCL Great Ormond Street Institute of Child Health, London, UK
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Giau VV, Bagyinszky E, Youn YC, An SSA, Kim SY. Genetic Factors of Cerebral Small Vessel Disease and Their Potential Clinical Outcome. Int J Mol Sci 2019; 20:ijms20174298. [PMID: 31484286 PMCID: PMC6747336 DOI: 10.3390/ijms20174298] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 08/27/2019] [Accepted: 09/01/2019] [Indexed: 12/23/2022] Open
Abstract
Cerebral small vessel diseases (SVD) have been causally correlated with ischemic strokes, leading to cognitive decline and vascular dementia. Neuroimaging and molecular genetic tests could improve diagnostic accuracy in patients with potential SVD. Several types of monogenic, hereditary cerebral SVD have been identified: cerebral autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy (CARASIL), cerebral autosomal-dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL), cathepsin A-related arteriopathy with strokes and leukoencephalopathy (CARASAL), hereditary diffuse leukoencephalopathy with spheroids (HDLS), COL4A1/2-related disorders, and Fabry disease. These disorders can be distinguished based on their genetics, pathological and imaging findings, clinical manifestation, and diagnosis. Genetic studies of sporadic cerebral SVD have demonstrated a high degree of heritability, particularly among patients with young-onset stroke. Common genetic variants in monogenic disease may contribute to pathological progress in several cerebral SVD subtypes, revealing distinct genetic mechanisms in different subtype of SVD. Hence, genetic molecular analysis should be used as the final gold standard of diagnosis. The purpose of this review was to summarize the recent discoveries made surrounding the genetics of cerebral SVD and their clinical significance, to provide new insights into the pathogenesis of cerebral SVD, and to highlight the possible convergence of disease mechanisms in monogenic and sporadic cerebral SVD.
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Affiliation(s)
- Vo Van Giau
- Department of Bionano Technology & Gachon Bionano Research Institute, Gachon University, Seongnam-si, Gyeonggi-do 461-701, Korea
| | - Eva Bagyinszky
- Department of Bionano Technology & Gachon Bionano Research Institute, Gachon University, Seongnam-si, Gyeonggi-do 461-701, Korea
| | - Young Chul Youn
- Department of Neurology, Chung-Ang University College of Medicine, Seoul 06973, Korea.
| | - Seong Soo A An
- Department of Bionano Technology & Gachon Bionano Research Institute, Gachon University, Seongnam-si, Gyeonggi-do 461-701, Korea.
| | - Sang Yun Kim
- Department of Neurology, Seoul National University College of Medicine & Neurocognitive Behavior Center, Seoul National University Bundang Hospital, Seoul 06973, Korea
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Martins AM, Cabrera G, Molt F, Suárez‐Obando F, Valdés RA, Varas C, Yang M, Politei JM. The clinical profiles of female patients with Fabry disease in Latin America: A Fabry Registry analysis of natural history data from 169 patients based on enzyme replacement therapy status. JIMD Rep 2019; 49:107-117. [PMID: 31497488 PMCID: PMC6718114 DOI: 10.1002/jmd2.12071] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 07/09/2019] [Accepted: 07/12/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Fabry disease is an X-linked lysosomal storage disorder with heterogeneous clinical expression in female patients ranging from asymptomatic to severe clinical presentations as in classic males. We assessed clinical profiles and compared natural history data of female patients eventually initiated on enzyme replacement therapy ("ERT-recipients") with those remaining untreated ("ERT-naïve"). METHODS We analyzed Fabry Registry data from 93 ERT-recipients, collected prior to ERT initiation, and 76 ERT-naïve females with classic or unclassified phenotypes from four Latin American countries and evaluated Fabry symptoms, interventricular septum thickness, left ventricular posterior wall thickness, estimated glomerular filtration rate, and severe clinical events. RESULTS For 169 patients with available data, median age of first Fabry symptom manifestation was 12.7 years with peripheral pain as predominant first symptom, and diagnostic delay of 10.3 years from the first reported symptom. Female patients had high symptomatic burden during natural history follow-up, with 83% reporting peripheral pain, 69%-79% cold/heat intolerance or abnormal sweating, and 32% gastrointestinal symptoms. ERT-recipients reported similar age at first symptom as ERT-naïve patients but they were older at diagnosis (median 39.2 vs 24.4 years, P < .01) and last follow-up (median 43.4 vs 28.2 years, P < .01). Reported Fabry symptom frequencies and abnormal echocardiography findings were higher in ERT-recipients. Functional renal assessments were normal and similar. CONCLUSIONS Female patients from Latin America have notable diagnostic delays and high symptomatic burden. ERT was prescribed late in females with advanced age at diagnosis and advanced disease. There remained many female patients who had been diagnosed at younger age, had substantial Fabry manifestations, but did not receive disease-specific treatment.
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Affiliation(s)
- Ana M. Martins
- Reference Center for Inborn Errors of MetabolismFederal University of São PauloSão PauloSPBrazil
| | | | - Fernando Molt
- Departamento de Clínicas, Facultad de MedicinaUniversidad Católica del NorteCoquimboChile
- Fabry Disease Multidisciplinary TeamHospital San Pablo de CoquimboCoquimboChile
| | - Fernando Suárez‐Obando
- Instituto de Genética Humana, Facultad de Medicina, Hospital Universitario San IgnacioPontificia Universidad JaverianaBogotaColombia
| | - Régulo A. Valdés
- National Dialysis Coordinator of Social Security of PanamaPanama CityPanama
| | - Carmen Varas
- Fabry Disease Multidisciplinary TeamHospital San Pablo de CoquimboCoquimboChile
| | - Meng Yang
- Sanofi GenzymeCambridgeMassachusetts
| | - Juan M. Politei
- Department of NeurologyFundación Para el Estudio de Enfermedades Neurometabólicas (FESEN)Buenos AiresArgentina
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