Monogenic diabetes syndromes: Locus-specific databases for Alström, Wolfram and Thiamine-responsive megaloblastic anaemia
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- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, United Kingdom.
- West Midlands Regional Genetics Service, Birmingham Women's and Children's Hospital, Edgbaston, Birmingham, UK.
- Department of Medicine (DIMED), University of Padua, Padua, Italy.
- Newcastle University
- Centrum für Reproduktionsmedizin und Andrologie, WHO Kollaborationszentrum, EAA, Ausbildungszentrum, Universitätsklinikum Münster, Münster, Germany.
- IDIBELL, Hospital Duran i Reynals, 3ª Planta, Gran Via de L'Hospitalet, 199, E-08908- L'Hospitalet de Llobregat, Centro de Investigación en Red de Enfermedades Raras (CIBERER), U-730, Hospital Duran i Reynals, Barcelona, Spain, 3ª Planta, Gran Via de L'Hospitalet, 199, E-08908-L'Hospitalet de Llobregat, Barcelona, Spain.
- Departments of Psychiatry, Neurology and Radiology, Washington University School of Medicine, St. Louis, MO, USA.
- Department of Clinical Genetics, University Hospital/The Kennedy Centre, DK- 2600, Denmark.
- University of Cambridge
- School of Medicine, IRCAN, UMR CNRS 7284/INSERM U1081/UNS, Nice Sophia-Antipolis University, 28 av de Valombrose, 06107 Nice Cedex 2, France.
- Department of Pediatrics, Washington University School of Medicine, One Children's Place, St. Louis, MO, USA.
- University of Glasgow
- Tartu University Children's Hospital, Lunini 6, Tartu, Estonia.
- University Hospitals Birmingham NHS Foundation Trust
- Department of Paediatrics, Medical University of Lodz, 4 Kosciuszki Avenue, Lodz, Poland.
- Alström Syndrome Europe, Woodpecker Cottage, Roundham Road, Paignton, S. Devon, UK.
- Association syndrome de Wolfram, Residence Gauguin, 56390 Grand-Champ, France. Área de.
- Unidad de Géstion Clínica de Garrucha, Área de Gestión Sanitaria Norte de Almería, Avd. Dra. Parra, s/n 04600 Huércal-Overa (Almería), Spain.
- Birmingham Women's and Children's Hospital, Steelhouse Lane, Birmingham, UK.
- Diabetes Research Unit, Horizon Centre, Torbay Hospital NHS Foundation Trust, 8 Lawes Bridge, Torquay, Devon, UK.
- Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO, USA.
- University of Melbourne
- Birmingham Children’s Hospital, Birmingham, UK
We developed a variant database for diabetes syndrome genes, using the Leiden Open Variation Database platform, containing observed phenotypes matched to the genetic variations. We populated it with 628 published disease associated variants (December 2016) for: WFS1 (n = 309), CISD2 (n = 3), ALMS1 (n = 268), and SLC19A2 (n = 48) for Wolfram type 1, Wolfram type 2, Alström and Thiamine-responsive megaloblastic anaemia syndromes respectively; and included 23 previously unpublished novel germline variants in WFS1 and 17 variants in ALMS1. We then investigated genotype phenotype relations for the WFS1 gene. The presence of bi-allelic loss of function variants predicted Wolfram syndrome defined by insulin dependent diabetes and optic atrophy, with a sensitivity of 79% (95% CI 75-83%) and specificity of 92% (83-97%). The presence of minor loss of function variants in WFS1 predicted isolated diabetes, isolated deafness or isolated congenital cataracts without development of the full syndrome (sensitivity 100% (93-100%), specificity 78% (73-82%). The ability to provide a prognostic prediction based on genotype will lead to improvements in patient care and counseling. The development of the database as a repository for monogenic diabetes gene variants will allow prognostic predictions for other diabetes syndromes as Next Generation Sequencing expands the repertoire of genotypes and phenotypes. The database is publicly available online at https://lovd.euro-wabb.org. This article is protected by copyright. All rights reserved.
|Early online date||1 Jun 2017|
|Publication status||Published - Jul 2017|
- Genotype-phenotype analysis, Wolfram syndrome, Alström syndrome, Thiamine responsive megaloblastic anaemia syndrome, Monogenic diabetes, Locus-specific database