Affiliations 

  • 1 Human Genetics, Genome Institute of Singapore, A*STAR, Singapore, Singapore
  • 2 Department of Neurology, National Neuroscience Institute, Singapore, Singapore; Duke-National University of Singapore Medical School, Singapore, Singapore
  • 3 Department of Neurology, National Neuroscience Institute, Singapore, Singapore
  • 4 Department of Biomedical Science, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
  • 5 Margaret K.L. Cheung Research Centre for Management of Parkinsonism, Gerald Choa Neuroscience Centre, Division of Neurology, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, N.T, Hong Kong SAR, China
  • 6 Division of Neurology, Department of Medicine, and the Mah Pooi Soo and Tan Chin Nam Centre for Parkinson's and Related Disorders, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
  • 7 Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
  • 8 Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Ulsan, Korea
  • 9 Human Genetics, Genome Institute of Singapore, A*STAR, Singapore, Singapore; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore. Electronic address: jianee.foo@ntu.edu.sg
  • 10 Department of Neurology, National Neuroscience Institute, Singapore, Singapore; Duke-National University of Singapore Medical School, Singapore, Singapore. Electronic address: tan.eng.king@singhealth.com.sg
Neurobiol Aging, 2019 02;74:235.e1-235.e4.
PMID: 30337193 DOI: 10.1016/j.neurobiolaging.2018.09.013

Abstract

Recent whole-exome sequencing studies in European patients with Parkinson's disease (PD) have identified potential risk variants across 33 novel PD candidate genes. We aim to determine if these reported candidate genes are similarly implicated in Asians by assessing common, rare, and novel nonsynonymous coding variants by sequencing all 33 genes in 198 Chinese samples and genotyping coding variants in an independent set of 9756 Chinese samples. We carried out further targeted sequencing of CD36 in an additional 576 Chinese and Korean samples. We found that only 8 of 43 reported risk variants were polymorphic in our Chinese samples. We identified several heterozygotes for rare loss-of-function mutations, including the reported CD36 p.Gln74Ter variant, in both cases and controls. We also observed 2 potential compound heterozygotes among PD cases for rare loss-of-function mutations in CD36 and SSPO. The other reported variants were common in East Asians and not associated with PD, completely absent, or only found in controls. Therefore, the 33 reported candidate genes and associated variants are unlikely to confer significant PD risk in the East Asian population.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.