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Ptrhd1 (C2orf79) Mutations Lead to Autosomal-Recessive Intellectual Disability and Parkinsonism Publisher Pubmed



Khodadadi H1 ; Azcona LJ2, 3 ; Aghamollaii V4 ; Omrani MD1 ; Garshasbi M5 ; Taghavi S1 ; Tafakhori A6 ; Shahidi GA7 ; Jamshidi J8 ; Darvish H1 ; Paisanruiz C3, 9, 10, 11, 12
Authors
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Authors Affiliations
  1. 1. Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  2. 2. Department of Neurosciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
  3. 3. Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
  4. 4. Department of Neurology, Roozbeh Psychiatry Hospital, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
  6. 6. Department of Neurology, School of Medicine, Imam Khomeini Hospital and Iranian Center of Neurological Research, Tehran University of Medical Sciences, Tehran, Iran
  7. 7. Movement Disorders Clinic, Hazrat Rassol Hospital, Iran University of Medical Sciences, Tehran, Iran
  8. 8. Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
  9. 9. Department of Psychiatry, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY, United States
  10. 10. Department of Genetics and Genomic sciences, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY, United States
  11. 11. Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY, United States
  12. 12. Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States

Source: Movement Disorders Published:2017


Abstract

Introduction: Atypical parkinsonism is a neurodegenerative disease that includes diverse neurological and psychiatric manifestations. Objectives: We aimed to identify the disease-cauisng mutations in a consanguineous family featuring intellectual disability and parkinsonism. Methods: Full phenotypic characterization, followed by genome-wide single-nucleotide polymorphism genotyping and whole-genome sequencing, was carried out in all available family members. Results: The chromosome, 2p23.3, was identified as the disease-associated locus, and a homozygous PTRHD1 mutation (c.157C>T) was then established as the disease-causing mutation. The pathogenicity of this PTRHD1 mutation was supported by its segregation with the disease status, its location in a functional domain of the encoding protein, as well as its absence in public databases and ethnicity-matched control chromosomes. Conclusion: Given the role of 2p23 locus in patients with intellectual disability and the previously reported PTRHD1 mutation (c.155G>A) in patients with parkinsonism and cognitive dysfunction, we concluded that the PTRHD1 mutation identified in this study is likely to be responsible for the phenotypic features of the family under consideration. © 2016 International Parkinson and Movement Disorder Society. © 2016 International Parkinson and Movement Disorder Society