1
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Switching between Enzyme Replacement Therapies and Substrate Reduction Therapies in Patients with Gaucher Disease: Data from the Gaucher Outcome Survey (GOS). J Clin Med 2022; 11:jcm11175158. [PMID: 36079085 PMCID: PMC9457166 DOI: 10.3390/jcm11175158] [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: 07/14/2022] [Revised: 08/27/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022] Open
Abstract
Switching between enzyme replacement therapies (ERT) and substrate reduction therapies (SRT) in patients with type 1 Gaucher disease (GD1) is not uncommon; however, the reasons for switchng treatments have not been explored in detail. Data from the Gaucher Outcome Survey (GOS), an international registry for patients with confirmed GD, were used to evaluate the reasons for, and consequences of, switching between these treatment types. Of the 1843 patients enrolled in GOS on 25 February 2020, 245 had undergone a treatment switch: 222 from initial ERT to SRT (of whom 88 later switched back to ERT) and 23 from initial SRT to ERT. The most common reasons for ERT–SRT switching were duration of infusion (25.4%), drug shortage (22.0%), and adverse events (AEs; 11.9%), and for SRT–ERT switching, AEs (63.6%), lack of beneficial effect (16.4%), and participation in a clinical trial (9.1%). Bodyweight and hematologic parameters largely remained stable before and after switching between ERT and SRT, although with substantial variation between patients. These findings contribute to understanding why treatment switching occurs in patients with GD, and may help physicians recognize the real-world impact of treatment switching between ERT and SRT for patients with GD.
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2
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Weinreb NJ, Goker-Alpan O, Kishnani PS, Longo N, Burrow TA, Bernat JA, Gupta P, Henderson N, Pedro H, Prada CE, Vats D, Pathak RR, Wright E, Ficicioglu C. The diagnosis and management of Gaucher disease in pediatric patients: Where do we go from here? Mol Genet Metab 2022; 136:4-21. [PMID: 35367141 DOI: 10.1016/j.ymgme.2022.03.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/04/2022] [Accepted: 03/04/2022] [Indexed: 02/07/2023]
Abstract
Gaucher disease (GD) is an autosomal recessive inherited lysosomal storage disease that often presents in early childhood and is associated with damage to multiple organ systems. Many challenges associated with GD diagnosis and management arise from the considerable heterogeneity of disease presentations and natural history. Phenotypic classification has traditionally been based on the absence (in type 1 GD) or presence (in types 2 and 3 GD) of neurological involvement of varying severity. However, patient management and prediction of prognosis may be best served by a dynamic, evolving definition of individual phenotype rather than by a rigid system of classification. Patients may experience considerable delays in diagnosis, which can potentially be reduced by effective screening programs; however, program implementation can involve ethical and practical challenges. Variation in the clinical course of GD and an uncertain prognosis also complicate decisions concerning treatment initiation, with differing stakeholder perspectives around efficacy and acceptable cost/benefit ratio. We review the challenges faced by physicians in the diagnosis and management of GD in pediatric patients. We also consider future directions and goals, including acceleration of accurate diagnosis, improvements in the understanding of disease heterogeneity (natural history, response to treatment, and prognosis), the need for new treatments to address unmet needs for all forms of GD, and refinement of the tools for monitoring disease progression and treatment efficacy, such as specific biomarkers.
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Affiliation(s)
- Neal J Weinreb
- Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, USA.
| | - Ozlem Goker-Alpan
- Lysosomal and Rare Disorders Research and Treatment Center, Fairfax, VA, USA.
| | - Priya S Kishnani
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA.
| | - Nicola Longo
- Division of Medical Genetics, University of Utah, Salt Lake City, UT, USA.
| | - T Andrew Burrow
- Department of Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children's Hospital, Little Rock, AR, USA.
| | - John A Bernat
- Division of Medical Genetics and Genomics, Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA, USA.
| | - Punita Gupta
- St Joseph's University Hospital, Paterson, NJ, USA.
| | - Nadene Henderson
- Division of Genetic and Genomic Medicine, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA.
| | - Helio Pedro
- Center for Genetic and Genomic Medicine, Hackensack University Medical Center, Hackensack, NJ, USA.
| | - Carlos E Prada
- Division of Genetics, Birth Defects & Metabolism, Ann & Robert H. Lurie Children's Hospital and Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.
| | - Divya Vats
- Kaiser Permanente Southern California, Los Angeles, CA, USA.
| | - Ravi R Pathak
- Takeda Pharmaceuticals USA, Inc., Lexington, MA, USA.
| | | | - Can Ficicioglu
- Division of Human Genetics and Metabolism, The Children's Hospital of Philadelphia, Philadelphia and the Perelman School of Medicine at the University of Pennsylvania, PA, USA.
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3
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Paskulin LD, Starosta RT, Vairo FPE, Krug BC, Picon P, Schwartz IVD. Efficacy and Safety of Taliglucerase Alfa for the Treatment of Gaucher Disease: A 9-Year Experience. JOURNAL OF INBORN ERRORS OF METABOLISM AND SCREENING 2022. [DOI: 10.1590/2326-4594-jiems-2021-0031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Livia d’Avila Paskulin
- Universidade Federal do Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Brazil
| | | | | | | | - Paulo Picon
- Hospital de Clínicas de Porto Alegre, Brazil; Universidade Federal do Rio Grande do Sul, Brazil
| | - Ida Vanessa Doederlein Schwartz
- Universidade Federal do Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Brazil; Hospital de Clínicas de Porto Alegre, Brazil
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4
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Serratrice C, Stirnemann J, Berrahal A, Belmatoug N, Camou F, Caillaud C, Billette de Villemeur T, Dalbies F, Cador B, Froissart R, Masseau A, Brassier A, Hivert B, Swiader L, Bertchansky I, de Moreuil C, Chabrol B, Durieu I, Leguy Seguin V, Astudillo L, Humbert S, Pichard S, Marcel C, Hau Rainsard I, Bengherbia M, Yousfi K, Berger MG. A Cross-Sectional Retrospective Study of Non-Splenectomized and Never-Treated Patients with Type 1 Gaucher Disease. J Clin Med 2020; 9:jcm9082343. [PMID: 32708003 PMCID: PMC7464688 DOI: 10.3390/jcm9082343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/14/2020] [Accepted: 07/20/2020] [Indexed: 01/16/2023] Open
Abstract
Patients with type 1 Gaucher disease (GD1) present thrombocytopenia, anemia, organomegaly, and bone complications. Most experts consider that the less aggressive forms do not require specific treatment. However, little is known about the disease course of these forms. The objective of this cross-sectional retrospective study was to compare the clinical, radiological, and laboratory characteristics of patients with less severe GD1 at diagnosis and at the last evaluation to identify features that might lead to potential complications. Non-splenectomized and never-treated patients (19 women and 17 men) were identified in the French Gaucher Disease Registry (FGDR). Their median age was 36.6 years (2.4–75.1), and their median follow-up was 7.8 years (0.4–32.4). Moreover, 38.7% were heterozygous for the GBA1 N370S variant, and 22.6% for the GBA1 L444P variant. From diagnosis to the last evaluation, GD1 did not worsen in 75% of these patients. Some parameters improved (fatigue and hemoglobin concentration), whereas platelet count and chitotriosidase level remained stable. In one patient (2.7%), Lewy body dementia was diagnosed at 46 years of age. Bone lesion onset was late and usually a single event in most patients. This analysis highlights the genotypic heterogeneity of this subgroup, in which disease could remain stable and even improve spontaneously. It also draws attention to the possible risk of Lewy body disease and late onset of bone complications, even if isolated, to be confirmed in larger series and with longer follow-up.
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Affiliation(s)
- Christine Serratrice
- Department of Internal Medicine for the Aged, Geneva University Hospitals, 1226 Thonex- Geneva, Switzerland
- Correspondence: ; Tel.: +4179-873-1474
| | - Jérôme Stirnemann
- Department of Internal Medicine, Department of Medicine, Geneva University Hospitals, 1205 Geneva, Switzerland;
| | - Amina Berrahal
- University Hospital of Clermont Ferrand, Hematology Biology Department, 63000 Clermont-Ferrand, France; (A.B.); (M.G.B.)
| | - Nadia Belmatoug
- Department of Internal Medicine, Centre de Référence des Maladies Lysosomales, AP-HP.Nord, Site Beaujon, Paris University, 92110 Clichy, France; (N.B.); (C.M.); (M.B.); (K.Y.)
| | - Fabrice Camou
- Intensive Care Unit, Hôpital Saint-André, CHU Bordeaux, 33000 Bordeaux, France;
| | - Catherine Caillaud
- Biochemistry, Metabolomics, and Proteomics Department, Necker Enfants Malades University Hospital, AP-HP. Center-Paris University, 75015 Paris, France;
| | | | - Florence Dalbies
- Institute of Cancerology and Hematology, CHRU Morvan, 29200 Brest, France;
| | - Bérengère Cador
- Department of Internal Medicine, CHU Pontchaillou, 35000 Rennes, France;
| | - Roseline Froissart
- Biochemical and Molecular Biology Department, Centre de Biologie et de Pathologie Est, Hospices Civils de Lyon, 69500 Bron, France;
| | - Agathe Masseau
- Department of Internal Medicine, CHU Hôtel Dieu, 44093 Nantes, France;
| | - Anaïs Brassier
- Reference Centre for Hereditary Metabolic Diseases, Hôpital Necker-Enfants Malades, AP-HP, IHU Institut Imagine, 75015 Paris, France;
| | - Bénédicte Hivert
- Department of Clinical Hematology, Hôpital Saint Vincent de Paul, Groupement des Hôpitaux de l’Institut Catholique de Lille, 59800 Lille, France;
| | - Laure Swiader
- Department of Internal Medicine, CHU Timone, 13005 Marseille, France;
| | - Ivan Bertchansky
- Department of Internal Medicine, Saint-Eloi Hospital, CHU Montpellier, 34000 Montpellier, France;
| | - Claire de Moreuil
- Department of Internal Medicine, Hôpital de la Cavale Blanche, CHRU de Brest, 29200 Brest, France;
| | - Brigitte Chabrol
- Department of Pediatric Neurology, CHU Timone, 13005 Marseille, France;
| | - Isabelle Durieu
- Department of Internal Medicine, Hospices Civils de Lyon, University Claude Bernard Lyon 1, 69495 Pierre-Bénite, France;
| | - Vanessa Leguy Seguin
- Department of Internal Medicine and Clinical Immunology, CHU F. Mitterrand, 21000 Dijon, France;
| | | | - Sébastien Humbert
- Department of Internal Medicine, Besancon University Hospital, 25000 Besancon, France;
| | - Samia Pichard
- Service of Metabolic Diseases, Hôpital Robert Debré, 75019 Paris, France;
| | - Catherine Marcel
- Department of Internal Medicine, Centre de Référence des Maladies Lysosomales, AP-HP.Nord, Site Beaujon, Paris University, 92110 Clichy, France; (N.B.); (C.M.); (M.B.); (K.Y.)
| | | | - Monia Bengherbia
- Department of Internal Medicine, Centre de Référence des Maladies Lysosomales, AP-HP.Nord, Site Beaujon, Paris University, 92110 Clichy, France; (N.B.); (C.M.); (M.B.); (K.Y.)
| | - Karima Yousfi
- Department of Internal Medicine, Centre de Référence des Maladies Lysosomales, AP-HP.Nord, Site Beaujon, Paris University, 92110 Clichy, France; (N.B.); (C.M.); (M.B.); (K.Y.)
| | - Marc G. Berger
- University Hospital of Clermont Ferrand, Hematology Biology Department, 63000 Clermont-Ferrand, France; (A.B.); (M.G.B.)
- University Clermont Auvergne, EA 7453 CHELTER, 63000 Clermont-Ferrand, France
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5
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Mistry P, Balwani M, Barbouth D, Burrow TA, Ginns EI, Goker-Alpan O, Grabowski GA, Kartha RV, Kishnani PS, Lau H, Lee CU, Lopez G, Maegawa G, Packman S, Prada C, Rosenbloom B, Lal TR, Schiffmann R, Weinreb N, Sidransky E. Gaucher disease and SARS-CoV-2 infection: Emerging management challenges. Mol Genet Metab 2020; 130:164-169. [PMID: 32471800 PMCID: PMC7211677 DOI: 10.1016/j.ymgme.2020.05.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/06/2020] [Accepted: 05/07/2020] [Indexed: 01/08/2023]
Affiliation(s)
- Pramod Mistry
- Department of Internal Medicine and Pediatrics,Yale School of Medicine, New Haven, CT, United States of America.
| | - Manisha Balwani
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, NY, United States of America.
| | - Deborah Barbouth
- Department of Human Genetics, University of Miami, Miller School of Medicine, United States of America.
| | - T Andrew Burrow
- Department of Human Genetics, University of Miami, Miller School of Medicine, United States of America; Department of Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children's Hospital, Section of Genetics and Metabolism, Little Rock, AR, United States of America.
| | - Edward I Ginns
- Lysosomal Disorders Treatment and Research Program, Departments of Psychiatry and Neurology, University of Massachusetts Medical School, Worcester, MA, United States of America.
| | - Ozlem Goker-Alpan
- Lysosomal and Rare Disorders Research and Treatment Center, Fairfax, VA, United States of America.
| | - Gregory A Grabowski
- Departments of Pediatrics, and Molecular Genetics and Biochemistry, University of Cincinnati College of Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States of America.
| | - Reena V Kartha
- Center for Orphan Drug Research, Department of Experimental and Clinical Pharmacology, University of Minnesota, Minneapolis, MN, United States of America.
| | - Priya S Kishnani
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, United States of America.
| | - Heather Lau
- Division of Neurogenetics, Department of Neurology, New York University, New York, NY, United States of America.
| | - Chung U Lee
- Lucile Packard Children's Hospital Stanford, Department of Pediatrics, Division of Medical Genetics, Stanford University School of Medicine, Palo Alta, CA, United States of America.
| | - Grisel Lopez
- Medical Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, MD, United States of America.
| | - Gustavo Maegawa
- Division of Genetics and Metabolism, Departments of Pediatrics, Neuroscience, Molecular Genetics and Microbiology, University of Florida, Gainesville, FL, United States of America.
| | - Seymour Packman
- Department of Pediatrics, Division of Medical Genetics, University of California San Francisco, San Francisco, CA, United States of America.
| | - Carlos Prada
- Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, United States of America.
| | - Barry Rosenbloom
- Cedars-Sinai Tower Hematology Oncology, Beverly Hills, CA, United States of America.
| | - Tamanna Roshan Lal
- Rare Disease Institute, Children's National Medical Center, Washington DC, United States of America.
| | - Rapheal Schiffmann
- Baylor, Scott & White Research Institute, Dallas, TX, United States of America.
| | - Neal Weinreb
- Departments of Human Genetics and Internal Medicine, University of Miami Miller School of Medicine, Miami, FL, United States of America.
| | - Ellen Sidransky
- Medical Genetics Branch, National Human Genome Research Institute, NIH, Bethesda, MD, United States of America.
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6
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Kyosen SO, Toma L, Nader HB, Braga MC, Pereira VG, Canossa S, Pesquero JB, D’Almeida V, Martins AM. CASE SERIES OF PATIENTS UNDER BIWEEKLY TREATMENT WITH LARONIDASE: A REPORT OF A SINGLE CENTER EXPERIENCE. REVISTA PAULISTA DE PEDIATRIA 2019; 37:312-317. [PMID: 31090850 PMCID: PMC6868559 DOI: 10.1590/1984-0462/;2019;37;3;00010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 11/30/2018] [Indexed: 11/22/2022]
Abstract
ABSTRACT Objective: To report the stabilization of urinary glycosaminoglicans (GAG) excretion and clinical improvements in patients with mucopolysaccharidosis type I (MPS I) under an alternative dose regimen of laronidase of 1.2 mg/kg every other week. Methods: We participated in a dose-optimization trial for laronidase in MPS-I patients using four alternative regimens: 0.58 mg/kg every week, 1.2 mg/kg every two weeks, 1.2 mg/kg every week and 1.8 mg/kg every other week (EOW). After the trial ended, the patients resumed the recommended dose and regimen of 0.58 mg/kg every week. Under this regimen, some patients presented difficulties in venous access and were unable to commute weekly to the treatment center. Therefore, we used an alternative regimen that consisted of 1.2 mg/kg EOW in eight patients. A retrospective study of medical records of MPS-I patients who underwent both enzyme replacement therapy (ERT) regimens, of 0.58 mg/kg every week and 1.2 mg/kg EOW, was done. Results: Patients remained clinically stable under the alternative regimen, did not present elevation of urinary GAG nor any adverse event. Conclusions: The switch of dose regimen to 1.2 mg/kg EOW of laronidase was safe, and did not cause any clinical worsening in patients who had been previously under standard dose ERT.
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Affiliation(s)
| | - Leny Toma
- Universidade Federal de São Paulo, Brazil
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7
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Pascoal C, Brasil S, Francisco R, Marques-da-Silva D, Rafalko A, Jaeken J, Videira PA, Barros L, Dos Reis Ferreira V. Patient and observer reported outcome measures to evaluate health-related quality of life in inherited metabolic diseases: a scoping review. Orphanet J Rare Dis 2018; 13:215. [PMID: 30486833 PMCID: PMC6263554 DOI: 10.1186/s13023-018-0953-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/14/2018] [Indexed: 12/25/2022] Open
Abstract
Background Health-related Quality of Life (HrQoL) is a multidimensional measure, which has gained clinical and social relevance. Implementation of a patient-centred approach to both clinical research and care settings, has increased the recognition of patient and/or observer reported outcome measures (PROMs or ObsROMs) as informative and reliable tools for HrQoL assessment. Inherited Metabolic Diseases (IMDs) are a group of heterogeneous conditions with phenotypes ranging from mild to severe and mostly lacking effective therapies. Consequently, HrQoL evaluation is particularly relevant. Objectives We aimed to: (1) identify patient and/or caregiver-reported HrQoL instruments used among IMDs; (2) identify the main results of the application of each HrQoL tool and (3) evaluate the main limitations of HrQoL instruments and study design/methodology in IMDs. Methods A scoping review was conducted using methods outlined by Arksey and O’Malley. Additionally, we critically analysed each article to identify the HrQoL study drawbacks. Results Of the 1954 studies identified, 131 addressed HrQoL of IMDs patients using PROMs and/or ObsROMs, both in observational or interventional studies. In total, we identified 32 HrQoL instruments destined to self- or proxy-completion; only 2% were disease-specific. Multiple tools (both generic and disease-specific) proved to be responsive to changes in HrQoL; the SF-36 and PedsQL questionnaires were the most frequently used in the adult and pediatric populations, respectively. Furthermore, proxy data often demonstrated to be a reliable approach complementing self-reported HrQoL scores. Nevertheless, numerous limitations were identified especially due to the rarity of these conditions. Conclusions HrQoL is still not frequently assessed in IMDs. However, our results show successful examples of the use of patient-reported HrQoL instruments in this field. The importance of HrQoL measurement for clinical research and therapy development, incites to further research in HrQoL PROMs’ and ObsROMs’ creation and validation in IMDs. Electronic supplementary material The online version of this article (10.1186/s13023-018-0953-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Carlota Pascoal
- Portuguese Association for Congenital Disorders of Glycosylation (CDG), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.,CDG & Allies - Professionals and Patient Associations International Network (PPAIN), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.,Research Unit on Applied Molecular Biosciences (UCIBIO), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Lisbon, Portugal
| | - Sandra Brasil
- Portuguese Association for Congenital Disorders of Glycosylation (CDG), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.,CDG & Allies - Professionals and Patient Associations International Network (PPAIN), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.,Research Unit on Applied Molecular Biosciences (UCIBIO), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Lisbon, Portugal
| | - Rita Francisco
- Portuguese Association for Congenital Disorders of Glycosylation (CDG), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.,CDG & Allies - Professionals and Patient Associations International Network (PPAIN), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.,Research Unit on Applied Molecular Biosciences (UCIBIO), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Lisbon, Portugal
| | - Dorinda Marques-da-Silva
- Portuguese Association for Congenital Disorders of Glycosylation (CDG), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.,CDG & Allies - Professionals and Patient Associations International Network (PPAIN), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.,Research Unit on Applied Molecular Biosciences (UCIBIO), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Lisbon, Portugal
| | - Agnes Rafalko
- Glycomine, Inc, 953 Indiana St, San Francisco, CA, 94107, USA
| | - Jaak Jaeken
- Center for Metabolic Diseases, UZ and KU Leuven, Leuven, Belgium
| | - Paula A Videira
- Portuguese Association for Congenital Disorders of Glycosylation (CDG), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.,CDG & Allies - Professionals and Patient Associations International Network (PPAIN), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.,Research Unit on Applied Molecular Biosciences (UCIBIO), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Lisbon, Portugal
| | - Luísa Barros
- CDG & Allies - Professionals and Patient Associations International Network (PPAIN), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.,Faculdade de Psicologia, Universidade de Lisboa, 1649-013, Lisbon, Portugal
| | - Vanessa Dos Reis Ferreira
- Portuguese Association for Congenital Disorders of Glycosylation (CDG), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal. .,CDG & Allies - Professionals and Patient Associations International Network (PPAIN), Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.
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8
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Mistry PK, Balwani M, Baris HN, Turkia HB, Burrow TA, Charrow J, Cox GF, Danda S, Dragosky M, Drelichman G, El-Beshlawy A, Fraga C, Freisens S, Gaemers S, Hadjiev E, Kishnani PS, Lukina E, Maison-Blanche P, Martins AM, Pastores G, Petakov M, Peterschmitt MJ, Rosenbaum H, Rosenbloom B, Underhill LH, Cox TM. Safety, efficacy, and authorization of eliglustat as a first-line therapy in Gaucher disease type 1. Blood Cells Mol Dis 2018; 71:71-74. [PMID: 29680197 DOI: 10.1016/j.bcmd.2018.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 04/04/2018] [Accepted: 04/04/2018] [Indexed: 01/15/2023]
Affiliation(s)
| | | | - Hagit N Baris
- The Genetics Institute, Rambam Health Care Campus, The Ruth and Bruce Rappaport Faculty of Medicine, Technion, - Israel Institute of Technology, Haifa, Israel
| | | | - T Andrew Burrow
- College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Joel Charrow
- Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Gerald F Cox
- Editas, Cambridge, MA, USA (formerly Sanofi Genzyme, Cambridge, MA, USA)
| | | | | | | | | | | | | | | | | | - Priya S Kishnani
- Duke University School of Medicine, Department of Pediatrics, Durham, NC, USA
| | - Elena Lukina
- National Research Center for Hematology, Moscow, Russia
| | | | | | | | - Milan Petakov
- Clinical Center of Serbia, University of Belgrade School of Medicine, Belgrade, Serbia
| | | | | | | | | | - Timothy M Cox
- University of Cambridge, Department of Medicine, Box 157, Level 5, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK.
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9
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Abstract
BACKGROUND Gaucher disease is the most common lysosomal storage disorder caused by a deficiency of the enzyme glucocerebrosidase. Current treatment of the disease involves a choice from enzyme replacement therapy, substrate reduction therapy and hemotopoietic stem cell transplantation (HSCT). HSCT is a high risk procedure with possible long-term benefits in the regression of skeletal and neurological changes in people with Gaucher disease. This is an update of a previously published Cochrane Review. OBJECTIVES To determine the role of HSCT in people with Gaucher disease in relation to: mortality risk associated with the procedure; efficacy in modifying the course of the disease; and arrest or regression of neurological manifestations in neuronopathic forms (types 2 and 3). SEARCH METHODS We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group Inborn Errors of Metabolism Trials Register which comprises of references identified from comprehensive electronic database searches and handsearches of relevant journals and abstract books of conference proceedings.Date of the most recent search of the Group's Haemoglobinopathies Trials Register: 19 January 2017.We also searched the websites: www.clinicaltrials.gov; WHO International Clinical Trials Registry Platform portal and www.genzymeclinicalresearch.com. Date of most recent search of these sites: 02 March 2017. SELECTION CRITERIA All randomised, quasi-randomised and controlled clinical trials comparing stem cell transplantation with enzyme replacement therapy, substrate reduction therapy, symptomatic treatment or no treatment in people with Gaucher disease of all ages. DATA COLLECTION AND ANALYSIS We independently assessed trials for inclusion, however, no relevant trials were identified. MAIN RESULTS Thirty two trials were identified by the searches; however, these were not suitable for inclusion in the review. AUTHORS' CONCLUSIONS HSCT is a form of treatment that offers the potential of permanent cure. However, there are no clinical trials that have assessed the safety and efficacy of this treatment in comparison to other conservative measures (enzyme replacement therapy, substrate reduction therapy) now in use.There are no trials included in the review and we have not identified any relevant trials up to March 2017. We therefore do not plan to update this review until new trials are published.
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Beaton B, Monzón JLS, Hughes DA, Pastores GM. Gaucher disease: risk stratification and comorbidities. Expert Opin Orphan Drugs 2017. [DOI: 10.1080/21678707.2017.1385455] [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: 10/18/2022]
Affiliation(s)
- Brendan Beaton
- Lysosomal Storage Disorder Unit, Royal Free NHS FT and University College London, London, UK
| | | | - Derralynn A. Hughes
- Lysosomal Storage Disorder Unit, Royal Free NHS FT and University College London, London, UK
- Department of Haematology and Palliative Care, Royal Free NHS FT, University College London, London, UK
| | - Gregory M. Pastores
- Department of Medicine/National Centre for Inherited Metabolic Disorders, Mater Misericordiae University Hospital and University College Dublin, Dublin, Ireland
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11
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Eliglustat maintains long-term clinical stability in patients with Gaucher disease type 1 stabilized on enzyme therapy. Blood 2017; 129:2375-2383. [PMID: 28167660 DOI: 10.1182/blood-2016-12-758409] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 01/27/2017] [Indexed: 11/20/2022] Open
Abstract
In the phase 3 Study of Eliglustat Tartrate (Genz-112638) in Patients With Gaucher Disease Who Have Reached Therapeutic Goals With Enzyme Replacement Therapy (ENCORE), at 1 year, eliglustat was noninferior to imiglucerase enzyme therapy in maintaining stable platelet counts, hemoglobin concentrations, and spleen and liver volumes. After this primary analysis period, patients entered a long-term extension phase in which all received eliglustat. Duration on eliglustat ranged from 2 to 5 years, depending on timing of enrollment (which spanned 2 years), treatment group to which patients were randomized, and whether they lived in the United States when commercial eliglustat became available. Here we report long-term safety and efficacy of eliglustat for 157 patients who received eliglustat in the ENCORE trial; data are available for 46 patients who received eliglustat for 4 years. Mean hemoglobin concentration, platelet count, and spleen and liver volumes remained stable for up to 4 years. Year to year, all 4 measures remained collectively stable (composite end point relative to baseline values) in ≥85% of patients as well as individually in ≥92%. Mean bone mineral density z scores (lumbar spine and femur) remained stable and were maintained in the healthy reference range throughout. Eliglustat was well tolerated over 4 years; 4 (2.5%) patients withdrew because of adverse events that were considered related to the study drug. No new or long-term safety concerns were identified. Clinical stability assessed by composite and individual measures was maintained in adults with Gaucher disease type 1 treated with eliglustat who remained in the ENCORE trial for up to 4 years. This trial was registered at www.clinicaltrials.gov as #NCT00943111.
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Serratrice C, Carballo S, Serratrice J, Stirnemann J. Imiglucerase in the management of Gaucher disease type 1: an evidence-based review of its place in therapy. CORE EVIDENCE 2016; 11:37-47. [PMID: 27790078 PMCID: PMC5072572 DOI: 10.2147/ce.s93717] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Introduction Gaucher disease is the first lysosomal disease to benefit from enzyme replacement therapy, thus serving as model for numerous other lysosomal diseases. Alglucerase was the first glucocerebrosidase purified from placental extracts, and this was then replaced by imiglucerase – a Chinese hamster ovary cell-derived glucocerebrosidase. Aim The aim was to review the evidence underlying the use of imiglucerase in Gaucher disease type 1 Evidence review Data from clinical trials and Gaucher Registries were analyzed. Conclusion Imiglucerase has been prescribed and found to have an excellent efficacy and safety profile. We report herein the evidence-based data published for 26 years justifying the use of imiglucerase.
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Affiliation(s)
- Christine Serratrice
- Department of Internal Medicine and Rehabilitation, Geneva University Hospital, Thonex, Switzerland
| | - Sebastian Carballo
- Department of General Internal Medicine, Geneva University Hospital, Geneva, Switzerland
| | - Jacques Serratrice
- Department of General Internal Medicine, Geneva University Hospital, Geneva, Switzerland
| | - Jérome Stirnemann
- Department of General Internal Medicine, Geneva University Hospital, Geneva, Switzerland
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Johnston BC, Miller PA, Agarwal A, Mulla S, Khokhar R, De Oliveira K, Hitchcock CL, Sadeghirad B, Mohiuddin M, Sekercioglu N, Seweryn M, Koperny M, Bala MM, Adams-Webber T, Granados A, Hamed A, Crawford MW, van der Ploeg AT, Guyatt GH. Limited responsiveness related to the minimal important difference of patient-reported outcomes in rare diseases. J Clin Epidemiol 2016; 79:10-21. [PMID: 27381737 DOI: 10.1016/j.jclinepi.2016.06.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 06/20/2016] [Accepted: 06/27/2016] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To explore the responsiveness of patient-reported outcomes (PROs) in interventional studies involving patients with rare lysosomal storage diseases (LSDs). STUDY DESIGN AND SETTING We searched eight databases for experimental and nonexperimental studies. Pairs of trained reviewers independently screened articles and subsequently extracted data from the eligible studies. Among studies with 10 or more patients using a valid PRO, we assessed the responsiveness of PROs based on a reanalysis of the data using minimal important difference estimates. Our analyses focused on statistically significant within-group differences in PROs for observational studies or the statistically significant between-group differences in PRO scores for controlled studies. RESULTS Of 2,679 unique records, 62 interventional studies addressing patients with Fabry (55%), Gaucher (19%), Pompe (16%), and mucopolysaccharidoses (11%) proved eligible. The most frequently used PROs were the Short-Form-36 (25 studies), Brief Pain Inventory (20 studies), EuroQoL-5D (9 studies), and the Fatigue Severity Scale (6 studies). Observational studies suggest that PROs sometimes detect significant within-group changes when present. Randomized trials raise questions regarding the responsiveness of PROs to small differences between groups. CONCLUSIONS Most studies have relied on generic PROs to evaluate quality of life and symptoms in patients with rare LSDs. PROs appear more responsive in observational studies than randomized trials.
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Affiliation(s)
- Bradley C Johnston
- Systematic Overviews through advancing Research Technology, Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, University of Toronto, 686 Bay St, Toronto, Ontario, Canada M5G 0A4; Department of Anesthesia and Pain Medicine, The Hospital for Sick Children, University of Toronto, 555 University Ave, Toronto, Ontario, Canada M5G 1X8; Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, 155 College St, Toronto, Ontario, Canada M5T 3M6.
| | - Patricia A Miller
- School of Rehabilitation Science, McMaster University, 1400 Main St. W., Hamilton, Ontario, Canada L8S 1C7
| | - Arnav Agarwal
- Department of Medicine, University of Toronto, Medical Sciences Building, 1 King's College Circle, Toronto, ON, Canada M5S 1A8
| | - Sohail Mulla
- Department of Clinical Epidemiology & Biostatistics, McMaster University, Hamilton, Ontario, Canada L8S 4K1
| | - Rabia Khokhar
- Department of Clinical Epidemiology & Biostatistics, McMaster University, Hamilton, Ontario, Canada L8S 4K1
| | - Kyle De Oliveira
- School of Medicine and Medical Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Christine L Hitchcock
- Systematic Overviews through advancing Research Technology, Child Health Evaluative Sciences, The Hospital for Sick Children Research Institute, University of Toronto, 686 Bay St, Toronto, Ontario, Canada M5G 0A4
| | - Behnam Sadeghirad
- Department of Clinical Epidemiology & Biostatistics, McMaster University, Hamilton, Ontario, Canada L8S 4K1; HIV/STI Surveillance Research Center and WHO Collaborating Centre for HIV Surveillance, Institute for Futures Studies in Health, Kerman University of Medical Sciences, 1 Haft Bagh St, Kerman 76169, Iran
| | - Mukarram Mohiuddin
- Department of Research & Scientific Affairs, American Academy of Orthopaedic Surgeons, 9400 West Higgins Road, Rosemont, IL 60018, USA
| | - Nigar Sekercioglu
- Department of Clinical Epidemiology & Biostatistics, McMaster University, Hamilton, Ontario, Canada L8S 4K1
| | - Michal Seweryn
- Institute of Public Health, Faculty of Health Sciences, Jagiellonian University Medical College, Gregórzecka 20, 31-351, Krakow, Poland
| | - Magdalena Koperny
- Public Health and Health Promotion Department, Province Sanitary-Epidemiological Station of Lesser Poland, Pradnicka 76, 31-202, Krakow, Poland
| | - Malgorzata M Bala
- Department of Hygiene and Dietetics, Jagiellonian University Medical College, Kopernika 7, 31-034, Krakow, Poland
| | - Thomasin Adams-Webber
- Hospital Library, The Hospital for Sick Children, 555 University Ave, Toronto, Ontario, Canada M5G 1X8
| | - Alicia Granados
- Sanofi Genzyme, 500 Kendall Street, Cambridge, MA 02142, USA
| | - Alaa Hamed
- Sanofi Genzyme, 500 Kendall Street, Cambridge, MA 02142, USA
| | - Mark W Crawford
- Department of Anesthesia and Pain Medicine, The Hospital for Sick Children, University of Toronto, 555 University Ave, Toronto, Ontario, Canada M5G 1X8
| | - Ans T van der Ploeg
- Center for Lysosomal and Metabolic Diseases, Erasmus MC University Medical Center, Wytemaweg 80, 3015 CN, Rotterdam, The Netherlands
| | - Gordon H Guyatt
- Department of Clinical Epidemiology & Biostatistics, McMaster University, Hamilton, Ontario, Canada L8S 4K1
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14
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Gras-Colomer E, Martínez-Gómez MA, Moya-Gil A, Fernandez-Zarzoso M, Merino-Sanjuan M, Climente-Martí M. Cellular Uptake of Glucocerebrosidase in Gaucher Patients Receiving Enzyme Replacement Treatment. Clin Pharmacokinet 2016; 55:1103-13. [PMID: 27083470 DOI: 10.1007/s40262-016-0387-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Enzyme replacement therapy (ERT) is currently the standard treatment for patients with Gaucher disease type I (GD1), but the pharmacokinetics have hardly been studied. This study aimed to quantify in vivo enzyme activity in peripheral leukocytes from patients receiving long-term treatment with imiglucerase or velaglucerase for GD1, and set out to assess the process of enzymatic uptake by peripheral leukocytes. METHODS A prospective semi-experimental study was conducted. Four time points for blood withdrawal were planned per patient to quantify the intra-leukocyte enzymatic activity. In order to assess the uptake process, the rate of enzyme uptake by leukocytes (Rupt) and the rate of enzyme disappearance from the plasma (Rdis) were estimated. RESULTS Eight GD1 patients were included. Intra-leukocyte activity was 24.31 mU/mL [standard deviation (SD) 6.32 mU/mL; coefficient of variation (CV) 25.96 %] at baseline and 27.14 mU/mL (SD 6.96 mU/mL; CV 25.65 %) at 15 min post-perfusion. The relationships with the administered dose were linear. The Rupt value was 37.73 mU/mL/min [95 % confidence interval (CI) 25.63-49.84] and showed a linear correlation with the administered enzyme dose (p < 0.05), and the Rdis value was 189.43 mU/mL/min (95 % CI 80.31-298.55) and also showed a linear correlation with the dose (p < 0.05). CONCLUSION This was the first in vivo study to quantify the accumulated enzymatic activity in patients receiving ERT for GD1. It showed that intra-leukocyte activity at baseline and at 15 min post-perfusion could be used as a possible marker for therapeutic individualization in patients receiving ERT for GD1.
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Affiliation(s)
- Elena Gras-Colomer
- Pharmacy Service, Hospital Universitario Dr. Peset, Avenida Gaspar Aguilar, 90, 46017, Valencia, Spain. .,FISABIO, Hospital Universitario Dr. Peset, Valencia, Spain.
| | - María Amparo Martínez-Gómez
- Pharmacy Service, Hospital Universitario Dr. Peset, Avenida Gaspar Aguilar, 90, 46017, Valencia, Spain.,FISABIO, Hospital Universitario Dr. Peset, Valencia, Spain
| | - Ana Moya-Gil
- Pharmacy Service, Hospital Universitario Dr. Peset, Avenida Gaspar Aguilar, 90, 46017, Valencia, Spain
| | | | - Matilde Merino-Sanjuan
- Pharmacy and Pharmaceutical Technology Department, Universidad de Valencia, Valencia, Spain.,Molecular Recognition and Technological Development Institute, Centro Mixto Universidad Politécnica de Valencia, Universidad de Valencia, Valencia, Spain
| | - Mónica Climente-Martí
- Pharmacy Service, Hospital Universitario Dr. Peset, Avenida Gaspar Aguilar, 90, 46017, Valencia, Spain.,Pharmacy and Pharmaceutical Technology Department, Universidad de Valencia, Valencia, Spain
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Abstract
Research and drug developments fostered under orphan drug product development programs have greatly assisted the introduction of efficient and safe enzyme-based therapies for a range of rare disorders. The introduction and regulatory approval of 20 different recombinant enzymes has enabled, often for the first time, effective enzyme-replacement therapy for some lysosomal storage disorders, including Gaucher (imiglucerase, taliglucerase, and velaglucerase), Fabry (agalsidase alfa and beta), and Pompe (alglucosidase alfa) diseases and mucopolysaccharidoses I (laronidase), II (idursulfase), IVA (elosulfase), and VI (galsulfase). Approved recombinant enzymes are also now used as therapy for myocardial infarction (alteplase, reteplase, and tenecteplase), cystic fibrosis (dornase alfa), chronic gout (pegloticase), tumor lysis syndrome (rasburicase), leukemia (L-asparaginase), some collagen-based disorders such as Dupuytren's contracture (collagenase), severe combined immunodeficiency disease (pegademase bovine), detoxification of methotrexate (glucarpidase), and vitreomacular adhesion (ocriplasmin). The development of these efficacious and safe enzyme-based therapies has occurred hand in hand with some remarkable advances in the preparation of the often specifically designed recombinant enzymes; the manufacturing expertise necessary for commercial production; our understanding of underlying mechanisms operative in the different diseases; and the mechanisms of action of the relevant recombinant enzymes. Together with information on these mechanisms, safety findings recorded so far on the various adverse events and problems of immunogenicity of the recombinant enzymes used for therapy are presented.
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Cox TM, Drelichman G, Cravo R, Balwani M, Burrow TA, Martins AM, Lukina E, Rosenbloom B, Ross L, Angell J, Puga AC. Eliglustat compared with imiglucerase in patients with Gaucher's disease type 1 stabilised on enzyme replacement therapy: a phase 3, randomised, open-label, non-inferiority trial. Lancet 2015; 385:2355-62. [PMID: 25819691 DOI: 10.1016/s0140-6736(14)61841-9] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND The mainstay of treatment for Gaucher's disease type 1 is alternate-week infusion of enzyme replacement therapy (ERT). We investigated whether patients stable on such treatment would remain so after switching to oral eliglustat, a selective inhibitor of glucosylceramide synthase. METHODS In this phase 3, randomised, multinational, open-label, non-inferiority trial, we enrolled adults (aged ≥18 years) who had received ERT for 3 years or more for Gaucher's disease. Patients were randomly allocated 2:1 at 39 clinics (stratified by ERT dose; block sizes of four; computer-generated centrally) to receive either oral eliglustat or imiglucerase infusions for 12 months. Participants and investigators were aware of treatment assignment, but the central reader who assessed organ volumes was masked. The composite primary efficacy endpoint was percentage of patients whose haematological variables and organ volumes remained stable for 12 months (ie, haemoglobin decrease not more than 15 g/L, platelet count decrease not more than 25%, spleen volume increase not more than 25%, and liver volume increase not more than 20%, in multiples of normal from baseline). The non-inferiority margin was 25% for eliglustat relative to imiglucerase, assessed in all patients who completed 12 months of treatment. This trial is registered with ClinicalTrials.gov, number NCT00943111, and EudraCT, number 2008-005223-28. FINDINGS Between Sept 15, 2009, and Nov 9, 2011, we randomly allocated 106 (66%) patients to eliglustat and 54 (34%) to imiglucerase. In the per-protocol population, 84 (85%) of 99 patients who completed eliglustat treatment and 44 (94%) of 47 patients who completed imiglucerase treatment met the composite primary endpoint (between-group difference -8·8%; 95% CI -17·6 to 4·2). The lower bound of the 95% CI of -17·6% was within the prespecified threshold for non-inferiority. Dropouts occurred due to palpitations (one patient on eliglustat), myocardial infarction (one patient on eliglustat), and psychotic disorder (one patient on imiglucerase). No deaths occurred. 97 (92%) of 106 patients in the eliglustat group had treatment-emergent adverse events, as did 42 (79%) of 53 in the imiglucerase group (mostly mild or moderate in severity). INTERPRETATION Oral eliglustat maintained haematological and organ volume stability in adults with Gaucher's disease type 1 already controlled by intravenous ERT and could be a useful therapeutic option. FUNDING Genzyme, a Sanofi company.
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Affiliation(s)
- Timothy M Cox
- Department of Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK.
| | | | - Renata Cravo
- State Institute of Haematology 'Arthur de Siqueira Cavalcanti', Rio de Janeiro, Brazil
| | | | | | | | | | - Barry Rosenbloom
- Cedars-Sinai Oncology, and Tower Hematology Oncology, Beverly Hills, CA, USA
| | - Leorah Ross
- Genzyme, a Sanofi company, Cambridge, MA, USA
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Shemesh E, Deroma L, Bembi B, Deegan P, Hollak C, Weinreb NJ, Cox TM. Enzyme replacement and substrate reduction therapy for Gaucher disease. Cochrane Database Syst Rev 2015; 2015:CD010324. [PMID: 25812601 PMCID: PMC8923052 DOI: 10.1002/14651858.cd010324.pub2] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Gaucher disease, a rare disorder, is caused by inherited deficiency of the enzyme glucocerebrosidase. It is unique among the ultra-orphan disorders in that four treatments are currently approved by various regulatory authorities for use in routine clinical practice. Hitherto, because of the relatively few people affected worldwide, many of whom started therapy during a prolonged period when there were essentially no alternatives to imiglucerase, these treatments have not been systematically evaluated in studies such as randomized controlled trials now considered necessary to generate the highest level of clinical evidence. OBJECTIVES To summarize all available randomized controlled study data on the efficacy and safety of enzyme replacement therapies and substrate reduction therapy for treating Gaucher disease. SEARCH METHODS We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group's Inborn Errors of Metabolism Trials Register. Additional searches were conducted on ClinicalTrials.gov for any ongoing studies with potential interim results, and through PubMed. We also searched the reference lists of relevant articles and reviews.Date of last search: 07 August 2014. SELECTION CRITERIA All randomized and quasi-randomized controlled studies (including open-label studies and cross-over studies) assessing enzyme replacement therapy or substrate reduction therapy, or both, in all types of Gaucher disease were included. DATA COLLECTION AND ANALYSIS Two authors independently assessed the risk of bias in the included studies, and extracted relevant data. MAIN RESULTS Of the 488 studies retrieved by the electronic searches, eight met the inclusion criteria and were analysed (300 participants). Response parameters were restricted to haemoglobin concentration, platelet count, spleen and liver volume and serum biomarkers (chitotriosidase and CCL18). Only one publication reported a 'low risk of bias' score in all parameters assessed, and all studies included were randomized.Four studies reported the responses to enzyme replacement therapy of previously untreated individuals with type 1 Gaucher disease. Two studies investigated maintenance enzyme replacement therapy in people with stable type 1 Gaucher disease previously treated for at least two years. One study compared substrate reduction therapy, enzyme replacement therapy and a combination thereof as maintenance therapy in people with type 1 Gaucher disease previously treated with enzyme replacement therapy. One study examined substrate reduction therapy in people with chronic neuronopathic (type 3) Gaucher disease who continued to receive enzyme replacement therapy.Treatment-naïve participants had similar increases in haemoglobin when comparing those receiving imiglucerase or alglucerase at 60 units/kg, imiglucerase or velaglucerase alfa at 60 U/kg, taliglucerase alfa at 30 units/kg or 60 units/kg, and velaglucerase alfa at 45 units/g or 60 units/kg. For platelet count response in participants with intact spleens, a benefit for imiglucerase over velaglucerase alfa at 60 units/kg was observed, mean difference -79.87 (95% confidence interval -137.57 to -22.17). There were no other significant differences in platelet count response when comparing different doses of velaglucerase alfa and of taliglucerase alfa, and when comparing imiglucerase to alglucerase. Spleen and liver volume reductions were not significantly different in any enzyme replacement therapy product or dose comparison study. Although a dose effect on serum biomarkers was not seen after nine months, a significantly greater reduction with higher dose was reported after 12 months in the velaglucerase study, mean difference 16.70 (95% confidence intervaI 1.51 to 31.89). In the two enzyme replacement therapy maintenance studies comparing infusions every two weeks and every four weeks, there were no significant differences in haemoglobin concentration, platelet count, and spleen and liver volumes over a 6 to 12 month period when participants were treated with the same cumulative dose.A total of 25 serious adverse events were reported, nearly all deemed unrelated to treatment.There are, as yet, no randomized trials of substrate reduction therapy in treatment-naïve patients that can be evaluated. Miglustat monotherapy appeared as effective as continued enzyme replacement therapy for maintenance of hematological, organ and biomarker responses in people with type 1 Gaucher disease previously treated with imiglucerase for at least two years. In those with neuronopathic Gaucher disease, no significant improvements in haemoglobin concentration, platelet count or organ volumes occurred when enzyme replacement therapy was augmented with miglustat.One randomized controlled study assessing substrate reduction therapy was published immediately prior to producing the final version of this review, and this, along with a further ongoing study (expected to be published in the near future), will be assessed for eligibility in a future update of the review. AUTHORS' CONCLUSIONS The results reflect the limitations of analysing evidence restricted to prospective randomized controlled trials, especially when dealing with chronic rare diseases. This analysis suggests that, during the first year of treatment, different recombinant glucocerebrosidases are bio-similar and non-inferior in safety and efficacy for surrogate biological response parameters. Enzyme replacement therapy given at 30 to 45 units/kg body weight every two to four weeks was generally as effective as the 60 unit/kg dose for the assessed clinical outcomes. The analysis emphasise the need to determine whether it is realistic to carry out multi-decade prospective clinical trials for rare diseases such as type 1 Gaucher disease. With large treatment effects on the classical manifestations of the disorder, therapeutic investigations in Gaucher disease mandate innovative trial designs and methodology to secure decisive data concerning long-term efficacy and safety - with the realization that knowledge about disease-modifying actions that are sustained are of crucial importance to people with this chronic condition.
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Affiliation(s)
| | - Laura Deroma
- University Hospital "Santa Maria della Misericordia"Regional Coordinator Centre for Rare DiseasesPiazzale Santa Maria della Misericordia 15UdineItaly33100
| | - Bruno Bembi
- University Hospital "Santa Maria della Misericordia"Regional Coordinator Centre for Rare DiseasesPiazzale Santa Maria della Misericordia 15UdineItaly33100
| | - Patrick Deegan
- University of Cambridge and Lysosomal Disorders UnitDepartment of MedicineAddenbrooke's Hospital (PO Box 157)CambridgeUKCB2 0QQ
| | - Carla Hollak
- Academic Medical CenterDepartment of Internal Medicine, Division of Endocrinology & MetabolismPostbus 22660AmsterdamNetherlands1100 DD
| | - Neal J Weinreb
- Northwest Oncology Hematology Associates PAUniversity Research Foundation for Lysosomal Storage Diseases8170 Royal Palm BoulevardCoral SpringsFloridaUSA33433
- University of Miami Miller School of MedicineMiamiFloridaUSA
| | - Timothy M Cox
- Addenbrooke's Hospital (Box 157)Department of MedicineLevel 5, Hills RoadCambridgeCambridgeshireUKCB2 0QQ
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Barranger JA, Brady RO, Grabowski GA, Mankin H, Mistry PK, Weinreb NJ. Position statement: National Gaucher Foundation Medical Advisory Board, January 7, 2014. Am J Hematol 2014; 89:457-8. [PMID: 24488939 DOI: 10.1002/ajh.23687] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 01/29/2014] [Indexed: 11/07/2022]
Affiliation(s)
| | | | | | - Henry Mankin
- Department of Orthopedic Surgery; Massachusetts General Hospital; Boston MA
| | | | - Neal J. Weinreb
- University Research Foundation for Lysosomal Storage Diseases; Coral Springs FL
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A multicenter open-label treatment protocol (HGT-GCB-058) of velaglucerase alfa enzyme replacement therapy in patients with Gaucher disease type 1: safety and tolerability. Genet Med 2013; 16:359-66. [PMID: 24263462 PMCID: PMC4018500 DOI: 10.1038/gim.2013.154] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 08/23/2013] [Indexed: 12/04/2022] Open
Abstract
Purpose: To evaluate the safety of velaglucerase alfa in patients with type 1 Gaucher disease who received velaglucerase alfa in the US treatment protocol HGT-GCB-058 (ClinicalTrials.gov identifier NCT00954460) during a global supply shortage of imiglucerase. Methods: This multicenter open-label treatment protocol enrolled patients who were either treatment naïve or had been receiving imiglucerase. Patients received intravenous velaglucerase alfa every other week at a dose of 60 U/kg (treatment naïve) or 15–60 U/kg (previously treated). Results: A total of 211 (including six treatment-naïve) patients were enrolled. Among the 205 previously treated patients, 35 (17.1%) experienced an adverse event considered related to study drug. Among the six treatment-naïve patients, one had an adverse event considered related to study drug. Infusion-related adverse events occurred in 28 (13.3%) of the 211 patients and usually occurred during the first three infusions. De novo, nonneutralizing, anti–velaglucerase alfa antibodies developed during treatment in one (<1.0%) previously treated patient and none of the treatment-naïve patients. Conclusion: The currently observed safety profile was consistent with those previously reported for imiglucerase and velaglucerase alfa phase III clinical trials. These results support the safety of initiating treatment with velaglucerase alfa or transitioning patients from imiglucerase therapy to velaglucerase alfa therapy.
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Zimran A, Pastores GM, Tylki-Szymanska A, Hughes DA, Elstein D, Mardach R, Eng C, Smith L, Heisel-Kurth M, Charrow J, Harmatz P, Fernhoff P, Rhead W, Longo N, Giraldo P, Ruiz JA, Zahrieh D, Crombez E, Grabowski GA. Safety and efficacy of velaglucerase alfa in Gaucher disease type 1 patients previously treated with imiglucerase. Am J Hematol 2013; 88:172-8. [PMID: 23339116 DOI: 10.1002/ajh.23383] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 12/11/2012] [Accepted: 12/12/2012] [Indexed: 11/11/2022]
Abstract
Velaglucerase alfa is a glucocerebrosidase produced by gene activation technology in a human fibroblast cell line (HT-1080), and it is indicated as an enzyme replacement therapy (ERT) for the treatment of Gaucher disease type 1 (GD1). This multicenter, open-label, 12-month study examined the safety and efficacy of velaglucerase alfa in patients with GD1 previously receiving imiglucerase. Eligible patients, ≥2 years old and clinically stable on imiglucerase therapy, were switched to velaglucerase alfa at a dose equal to their prior imiglucerase dose. Infusion durations were 1 hr every other week. Forty patients received velaglucerase alfa (18 male, 22 female; four previously splenectomized; age range 9-71 years). Velaglucerase alfa was generally well tolerated with most adverse events (AEs) of mild or moderate severity. The three most frequently reported AEs were headache (12 of 40 patients), arthralgia (9 of 40 patients), and nasopharyngitis (8 of 40 patients). No patients developed antibodies to velaglucerase alfa. There was one serious AE considered treatment-related: a grade 2 anaphylactoid reaction within 30 min of the first infusion. The patient withdrew; this was the only AE-related withdrawal. Hemoglobin concentrations, platelet counts, and spleen and liver volumes remained stable through 12 months. In conclusion, adult and pediatric patients with GD1, previously treated with imiglucerase, successfully transitioned to velaglucerase alfa, which was generally well tolerated and demonstrated efficacy over 12 months' treatment consistent with that observed in the velaglucerase alfa phase 3 clinical trial program.
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Affiliation(s)
- Ari Zimran
- Shaare Zedek Medical Center and Hebrew University-Hadassah Medical School; Jerusalem; Israel
| | | | | | - Derralynn A. Hughes
- Royal Free Hospital, University College London School of Medicine; London; United Kingdom
| | - Deborah Elstein
- Shaare Zedek Medical Center and Hebrew University-Hadassah Medical School; Jerusalem; Israel
| | | | | | - Laurie Smith
- Children's Mercy Hospital; Kansas City; Missouri
| | | | - Joel Charrow
- Ann and Robert H. Lurie Children's Hospital of Chicago; Chicago; Illinois
| | - Paul Harmatz
- Children's Hospital Oakland; Oakland; California
| | | | - William Rhead
- Children's Hospital of Wisconsin; Milwaukee; Wisconsin
| | | | - Pilar Giraldo
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER) and Hospital Universitario Miguel Servet; Zaragoza; Spain
| | - Juan A. Ruiz
- Shire Human Genetic Therapies; Lexington; Massachusetts
| | - David Zahrieh
- Shire Human Genetic Therapies; Lexington; Massachusetts
| | - Eric Crombez
- Shire Human Genetic Therapies; Lexington; Massachusetts
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22
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Abstract
BACKGROUND Gaucher disease is the most common lysosomal storage disorder caused by a deficiency of the enzyme glucocerebrosidase. Current treatment of the disease involves a choice among enzyme replacement therapy, substrate reduction therapy and stem cell transplantation. Stem cell transplantation is a high risk procedure with possible long-term benefits in the regression of skeletal and neurological changes in people with Gaucher disease. OBJECTIVES To determine the role of hematopoietic stem cell transplantation in people with Gaucher disease in relation to: mortality risk associated with the procedure; efficacy in modifying the course of the disease; and arrest or regression of neurological manifestations in neuropathic forms (Types 2 and 3). SEARCH METHODS We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group Inborn Errors of Metabolism Trials Register which comprises of references identified from comprehensive electronic database searches and handsearches of relevant journals and abstract books of conference proceedings.Date of the most recent search of the Group's Haemoglobinopathies Trials Register: 26 March 2012.We also searched the websites www.clinicaltrials.gov and www.genzymeclinicalresearch.com. Date of most recent search of these sites: 16 February 2012. SELECTION CRITERIA All randomised, quasi-randomised and controlled clinical trials comparing stem cell transplantation with enzyme replacement therapy, substrate reduction therapy, symptomatic treatment or no treatment in people with Gaucher disease of all ages. DATA COLLECTION AND ANALYSIS We independently assessed trials for inclusion, however, no relevant trials were identified. MAIN RESULTS Twelve trials were identified by the searches, however, these were not suitable for inclusion in the review. AUTHORS' CONCLUSIONS Stem cell transplantation is a form of treatment that offers the potential of permanent cure. However, there are no clinical trials that have assessed the safety and efficacy of stem cell transplantation in comparison to other conservative measures (enzyme replacement therapy, substrate reduction therapy) now in use.
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Affiliation(s)
- Usha Rani Somaraju
- Department of Biochemistry and Genetics, Trinity School ofMedicine, Kingstown, Saint Vincent and The Grenadines.
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Benedik-Dolničar M, Kitanovski L. Individualized long-term enzyme therapy for Gaucher disease type 1 in Slovenia. Pediatr Int 2011; 53:1018-22. [PMID: 21883686 DOI: 10.1111/j.1442-200x.2011.03451.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Gaucher disease type 1 (GD1) was the first lysosomal storage disorder for which an effective enzyme replacement therapy was developed. We describe the management of eight GD1 patients in Slovenia who were diagnosed between the ages of 2 and 15 years. METHODS Patients were individually assessed to establish initial enzyme doses and monitored frequently to determine the effects of long-term enzyme dose regimens. Outcomes up to 10 years after long-term treatment are described by changes in the Zimran severity score index, chitotriosidase and acid phosphatase levels, and after 2001, bone parameters (DEXA bone mineral density scores and the MRI bone marrow burden score). RESULTS Following the initiation of enzyme therapy with individualized dose regimens (range 25-56 U/kg/14 days) and followed by a gradual reduction of doses (range 12-35 U/kg/14 days) during long-term maintenance, disease status improved in all patients as measured by the Zimran severity score index (from a mean of 11.25 [median 11.5] before therapy to a mean of 4.12 [median 3.5] at last report). Anemia and leucopenia resolved in all patients, chitotriosidase and acid phosphatase levels decreased in all patients (and by over 75% in six patients) within 1 year of treatment. Bone marrow burden scores improved in all monitored patients and DXA scores improved in six of seven monitored patients. CONCLUSIONS We conclude that enzyme therapy with relatively low, individualized dose regimens is well-tolerated and effective in children and young adults with GD1 disease, who are regularly monitored for changes in disease status.
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Affiliation(s)
- Majda Benedik-Dolničar
- Division of Pediatrics, Unit of Hemato-oncology, University Medical Centre Ljubljana, Ljubljana, Slovenia.
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Goker-Alpan O. Therapeutic approaches to bone pathology in Gaucher disease: past, present and future. Mol Genet Metab 2011; 104:438-47. [PMID: 21889384 DOI: 10.1016/j.ymgme.2011.08.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 08/05/2011] [Accepted: 08/05/2011] [Indexed: 12/20/2022]
Abstract
Enzyme replacement therapy (ERT) is effective for the treatment of the systemic manifestations of Gaucher disease (GD) and can have a significant impact on skeletal manifestations. Bone involvement is broad and can occur in otherwise clinically asymptomatic individuals. The heterogeneity in GD-related bone disease may implicate multiple pathological processes such as disruption of coordinated bone cell activity, in addition to the physical impact of Gaucher cells causing vascular occlusion. Accumulated data suggests that earlier treatment initiation decreases skeletal complications and that bone disease may require a longer duration of treatment and higher dose than is necessary for organ involvement and hematopoietic manifestations. However, in some patients, bone manifestations persist and even worsen despite ERT, regardless of dose or duration of treatment. Treating skeletal disease should be considered of equal importance as treating visceral and hematologic manifestations. When treatment decisions involve multiple enzyme preparations and other therapeutic modalities such small molecules, the choice should be tailored on an individual basis with continuing evaluation.
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Affiliation(s)
- Ozlem Goker-Alpan
- Lysosomal Disorders Research and Treatment Unit, Center for Clinical Trials, Springfield, VA 22152, USA.
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Chaves RG, Coelho JC, Michelin-Tirelli K, Maurício TF, de Freitas Maia Chaves E, de Almeida PC, Maurício CRF, Cavalcanti GB. Successful screening for Gaucher disease in a high-prevalence population in tabuleiro do Norte (northeastern Brazil): a cross-sectional study. JIMD Rep 2011; 1:73-8. [PMID: 23430831 DOI: 10.1007/8904_2011_19] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2010] [Revised: 01/31/2011] [Accepted: 02/04/2011] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Gaucher disease (GD) is a hereditary lysosomal storage disorder characterized by the accumulation of glucosylceramide, mainly in the cells of the reticuloendothelial system, due to a deficiency of the enzyme acid β-glucosidase (GBA). Diagnosis is usually based on measurement of GBA activity in peripheral leukocytes. The purpose of this study was to evaluate the ability of screening for GBA and chitotriosidase activity using dried blood spots on filter paper (DBS-FP) to identify individuals at high risk for GD in high-risk populations such as that of Tabuleiro do Norte, a small town in Northeastern Brazil. METHODS Between 1 June 2007 and 31 May 2008, 740 consented residents and descendants of traditional families from Tabuleiro do Norte were submitted to screening with DBS-FP. Subjects with GBA activity < 2.19 nmol/h/mL were referred to the analysis of GBA and chitotriosidase activity in peripheral leukocytes and in plasma, respectively. Subjects at highest risk for GD (GBA activity in peripheral leukocytes < 5.6 nmol/h/mg protein) were referred to molecular analysis to confirm diagnosis. RESULTS Screening with DBS-FP identified 135 subjects (18.2%) with GBA activity < 2.19 nmol/h/mL, 131 of whom remained in the study. In ten of these (7.6%), GBA activity in leukocytes was 2.6-5.5 nmol/h/mg protein. Subsequent molecular analysis confirmed six cases of heterozygosity and four normals for GD. CONCLUSION DBS-FP assay was shown to be an effective initial GD-screening strategy for high-prevalence populations in developing regions. Diagnosis could not be established from GBA activity in leukocytes alone, but required confirmation with molecular analysis.
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Affiliation(s)
- Rigoberto Gadelha Chaves
- Programa de Pós-Graduação do Centro de Ciências da Saúde- UFRN, Rua Capitão José Rodrigues 4774, Centro, Tabuleiro do Norte, Ceará, Brazil,
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26
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Enzyme replacement therapy “drug holiday”: Results from an unexpected shortage of an orphan drug supply in Australia. Blood Cells Mol Dis 2011; 46:107-10. [DOI: 10.1016/j.bcmd.2010.05.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Accepted: 05/01/2010] [Indexed: 11/22/2022]
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Chien YH, Lee NC, Tsai FJ, Chao MC, Hwu WL. Reduction in imiglucerase dosage causes immediate rise of chitotriosidase activity in patients with Gaucher disease. Mol Genet Metab 2010; 101:90-1. [PMID: 20580583 DOI: 10.1016/j.ymgme.2010.05.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Accepted: 05/10/2010] [Indexed: 11/27/2022]
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Abstract
Gaucher disease (GD), the inherited deficiency of the lysosomal enzyme glucocerebrosidase, presents with a wide range of symptoms of varying severity, and primarily affects the skeletal, hematologic and nervous systems. To date, the standard of care has included enzyme replacement therapy with imiglucerase. Although imiglucerase is highly effective in reversing the visceral and hematologic manifestations, skeletal disease is slow to respond, pulmonary involvement is relatively resistant, and the CNS involvement is not impacted. Because of the recent manufacturing and processing problems, the research and development of alternative therapeutics has become more pressing. The divergent phenotypes and the heterogeneity involving different organ systems implicates the involvement of several pathological processes that include enzyme deficiency, substrate accumulation, protein misfolding, and macrophage activation, that differ in each patient with GD. Thus, the therapy should be tailored individually in order to target multiple pathways that interplay in GD.
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Affiliation(s)
- Ozlem Goker-Alpan
- Lysosomal Diseases Research and Treatment Unit, Center for Clinical Trials, O&O Alpan LLC, Springfield, VA, USA
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29
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Marshall J, McEachern KA, Chuang WL, Hutto E, Siegel CS, Shayman JA, Grabowski GA, Scheule RK, Copeland DP, Cheng SH. Improved management of lysosomal glucosylceramide levels in a mouse model of type 1 Gaucher disease using enzyme and substrate reduction therapy. J Inherit Metab Dis 2010; 33:281-9. [PMID: 20336375 PMCID: PMC3683842 DOI: 10.1007/s10545-010-9072-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2009] [Revised: 01/14/2010] [Accepted: 02/04/2010] [Indexed: 12/21/2022]
Abstract
Gaucher disease is caused by a deficiency of the lysosomal enzyme glucocerebrosidase (acid beta-glucosidase), with consequent cellular accumulation of glucosylceramide (GL-1). The disease is managed by intravenous administrations of recombinant glucocerebrosidase (imiglucerase), although symptomatic patients with mild to moderate type 1 Gaucher disease for whom enzyme replacement therapy (ERT) is not an option may also be treated by substrate reduction therapy (SRT) with miglustat. To determine whether the sequential use of both ERT and SRT may provide additional benefits, we compared the relative pharmacodynamic efficacies of separate and sequential therapies in a murine model of Gaucher disease (D409V/null). As expected, ERT with recombinant glucocerebrosidase was effective in reducing the burden of GL-1 storage in the liver, spleen, and lung of 3-month-old Gaucher mice. SRT using a novel inhibitor of glucosylceramide synthase (Genz-112638) was also effective, albeit to a lesser degree than ERT. Animals administered recombinant glucocerebrosidase and then Genz-112638 showed the lowest levels of GL-1 in all the visceral organs and a reduced number of Gaucher cells in the liver. This was likely because the additional deployment of SRT following enzyme therapy slowed the rate of reaccumulation of GL-1 in the affected organs. Hence, in patients whose disease has been stabilized by intravenously administered recombinant glucocerebrosidase, orally administered SRT with Genz-112638 could potentially be used as a convenient maintenance therapy. In patients naïve to treatment, ERT followed by SRT could potentially accelerate clearance of the offending substrate.
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Affiliation(s)
- John Marshall
- Genzyme Corporation, Framingham, MA 01701-9322, USA.
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30
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31
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Hollak CEM, de Fost M, van Dussen L, vom Dahl S, Aerts JMFG. Enzyme therapy for the treatment of type 1 Gaucher disease: clinical outcomes and dose – response relationships. Expert Opin Pharmacother 2009; 10:2641-52. [DOI: 10.1517/14656560903270520] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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