4.5 Article

Identification ofUBAP1mutations in juvenile hereditary spastic paraplegia in the 100,000 Genomes Project

Journal

EUROPEAN JOURNAL OF HUMAN GENETICS
Volume 28, Issue 12, Pages 1763-1768

Publisher

SPRINGERNATURE
DOI: 10.1038/s41431-020-00720-w

Keywords

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Funding

  1. Medical Research Council [MR/S01165X/1, MR/S005021/1, G0601943]
  2. MRC [MR/S005021/1, MR/S006753/1, G0601943, MR/S01165X/1] Funding Source: UKRI
  3. Brain Research UK [UCCHoulden] Funding Source: researchfish
  4. Medical Research Council [MR/S005021/1, G0601943, MR/S01165X/1] Funding Source: researchfish
  5. Muscular Dystrophy UK [16GRO-PS36-0055] Funding Source: researchfish
  6. Rosetrees Trust [M584] Funding Source: researchfish
  7. Wellcome Trust [104033/Z/14/Z] Funding Source: researchfish

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Hereditary spastic paraplegia (HSP) is a group of heterogeneous inherited degenerative disorders characterized by lower limb spasticity. Fifty percent of HSP patients remain yet genetically undiagnosed. The 100,000 Genomes Project (100KGP) is a large UK-wide initiative to provide genetic diagnosis to previously undiagnosed patients and families with rare conditions. Over 400 HSP families were recruited to the 100KGP. In order to obtain genetic diagnoses, gene-based burden testing was carried out for rare, predicted pathogenic variants using candidate variants from the Exomiser analysis of the genome sequencing data. A significant gene-disease association was identified forUBAP1and HSP. Three protein truncating variants were identified in 13 patients from 7 families. All patients presented with juvenile form of pure HSP, with median age at onset 10 years, showing autosomal dominant inheritance or de novo occurrence. Additional clinical features included parkinsonism and learning difficulties, but their association withUBAP1needs to be established.

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