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Dardis A, Michelakakis H, Rozenfeld P, Fumic K, Wagner J, Pavan E, Fuller M, Revel-Vilk S, Hughes D, Cox T, Aerts J. Patient centered guidelines for the laboratory diagnosis of Gaucher disease type 1. Orphanet J Rare Dis 2022; 17:442. [PMID: 36544230 PMCID: PMC9768924 DOI: 10.1186/s13023-022-02573-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 11/20/2022] [Indexed: 12/24/2022] Open
Abstract
Gaucher disease (GD) is an autosomal recessive lysosomal storage disorder due to the deficient activity of the acid beta-glucosidase (GCase) enzyme, resulting in the progressive lysosomal accumulation of glucosylceramide (GlcCer) and its deacylated derivate, glucosylsphingosine (GlcSph). GCase is encoded by the GBA1 gene, located on chromosome 1q21 16 kb upstream from a highly homologous pseudogene. To date, more than 400 GBA1 pathogenic variants have been reported, many of them derived from recombination events between the gene and the pseudogene. In the last years, the increased access to new technologies has led to an exponential growth in the number of diagnostic laboratories offering GD testing. However, both biochemical and genetic diagnosis of GD are challenging and to date no specific evidence-based guidelines for the laboratory diagnosis of GD have been published. The objective of the guidelines presented here is to provide evidence-based recommendations for the technical implementation and interpretation of biochemical and genetic testing for the diagnosis of GD to ensure a timely and accurate diagnosis for patients with GD worldwide. The guidelines have been developed by members of the Diagnostic Working group of the International Working Group of Gaucher Disease (IWGGD), a non-profit network established to promote clinical and basic research into GD for the ultimate purpose of improving the lives of patients with this disease. One of the goals of the IWGGD is to support equitable access to diagnosis of GD and to standardize procedures to ensure an accurate diagnosis. Therefore, a guideline development group consisting of biochemists and geneticists working in the field of GD diagnosis was established and a list of topics to be discussed was selected. In these guidelines, twenty recommendations are provided based on information gathered through a systematic review of the literature and two different diagnostic algorithms are presented, considering the geographical differences in the access to diagnostic services. Besides, several gaps in the current diagnostic workflow were identified and actions to fulfill them were taken within the IWGGD. We believe that the implementation of recommendations provided in these guidelines will promote an equitable, timely and accurate diagnosis for patients with GD worldwide.
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Affiliation(s)
- A. Dardis
- grid.411492.bRegional Coordinator Centre for Rare Disease, University Hospital of Udine, P.Le Santa Maria Della Misericordia 15, 33100 Udine, Italy
| | - H. Michelakakis
- grid.414709.f0000 0004 0383 4326Department of Enzymology and Cellular Function, Institute of Child Health, Athens, Greece
| | - P. Rozenfeld
- grid.9499.d0000 0001 2097 3940Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Instituto de Estudios Inmunológicos Y Fisiopatológicos (IIFP), UNLP, CONICET, Asociado CIC PBA, La Plata, Argentina
| | - K. Fumic
- grid.412688.10000 0004 0397 9648Department for Laboratory Diagnostics, University Hospital Centre Zagreb and School of Medicine, Zagreb, Croatia
| | - J. Wagner
- grid.412680.90000 0001 1015 399XDepartment of Medical Biology and Genetics, Faculty of Medicine, J.J. Strossmayer University, Osijek, Croatia ,International Gaucher Alliance, Dursley, UK
| | - E. Pavan
- grid.411492.bRegional Coordinator Centre for Rare Disease, University Hospital of Udine, P.Le Santa Maria Della Misericordia 15, 33100 Udine, Italy
| | - M. Fuller
- grid.1010.00000 0004 1936 7304Genetics and Molecular Pathology, SA Pathology at Women’s and Children’s Hospital and Adelaide Medical School, University of Adelaide, Adelaide, SA 5005 Australia
| | - S. Revel-Vilk
- grid.415593.f0000 0004 0470 7791Gaucher Unit, Shaare Zedek Medical Center, Jerusalem, Israel ,grid.9619.70000 0004 1937 0538Faculty of Medicine, Hebrew University, Jerusalem, Israel
| | - D. Hughes
- grid.437485.90000 0001 0439 3380Lysosomal Storage Disorders Unit, Royal Free London NHS Foundation Trust and University College London, London, UK
| | - T. Cox
- grid.5335.00000000121885934Department of Medicine, University of Cambridge, Cambridge, UK
| | - J. Aerts
- grid.5132.50000 0001 2312 1970Department of Medical Biochemistry, Leiden Institute of Chemistry, Leiden, The Netherlands
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Woo EG, Tayebi N, Sidransky E. Next-Generation Sequencing Analysis of GBA1: The Challenge of Detecting Complex Recombinant Alleles. Front Genet 2021; 12:684067. [PMID: 34234814 PMCID: PMC8255797 DOI: 10.3389/fgene.2021.684067] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/27/2021] [Indexed: 01/23/2023] Open
Affiliation(s)
- Elizabeth G Woo
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, United States
| | - Nahid Tayebi
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, United States
| | - Ellen Sidransky
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, United States
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