Journal of Neurology

, Volume 262, Issue 11, pp 2443–2447 | Cite as

The Alzheimer disease BIN1 locus as a modifier of GBA-associated Parkinson disease

  • Z. Gan-Or
  • I. Amshalom
  • A. Bar-Shira
  • M. Gana-Weisz
  • A. Mirelman
  • K. Marder
  • S. Bressman
  • N. Giladi
  • A. Orr-Urtreger
Original Communication

Abstract

GBA mutations are among the most common genetic risk factors for Parkinson disease (PD) worldwide. We aimed to identify genetic modifiers of the age at onset (AAO) in GBA-associated PD. The study included a genome-wide discovery phase, including a cohort of 79 patients with the GBA p.N370S mutation, and candidate validation and replication analyses of 8 SNPs in patients with mild (n = 113) and severe (n = 41) GBA mutations. Genotyping was performed using the Affymetrix human SNP 6.0 array and TaqMan assays. In the genome-wide phase, none of the SNPs passed the genome-wide significance threshold. Eight SNPs were selected for further analysis from the top hits. In all GBA-associated PD patients (n = 153), the BIN1 rs13403026 minor allele was associated with an older AAO (12.4 ± 5.9 years later, p = 0.0001), compared to patients homozygous for the major allele. Furthermore, the AAO was 10.7 ± 6.8 years later in patients with mild GBA mutations, (p = 0.005, validation group), and 17.1 ± 2.5 years later in patients with severe GBA mutations (p = 0.01, replication). Our results suggest that alterations in the BIN1 locus, previously associated with Alzheimer disease, may modify the AAO of GBA-associated PD. More studies in other populations are required to examine the role of BIN1-related variants in GBA-associated PD.

Keywords

BIN1 GBA Genetics Parkinson disease 

Supplementary material

415_2015_7868_MOESM1_ESM.docx (39 kb)
Supplementary material 1 (DOCX 38 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Z. Gan-Or
    • 1
    • 3
  • I. Amshalom
    • 1
    • 3
  • A. Bar-Shira
    • 1
  • M. Gana-Weisz
    • 1
  • A. Mirelman
    • 2
  • K. Marder
    • 4
  • S. Bressman
    • 5
  • N. Giladi
    • 2
    • 3
  • A. Orr-Urtreger
    • 1
    • 3
  1. 1.The Genetic InstituteTel Aviv Sourasky Medical CenterTel AvivIsrael
  2. 2.Movement Disorders Unit, Department of Neurology, Parkinson CenterTel Aviv Sourasky Medical CenterTel AvivIsrael
  3. 3.The Sackler Faculty of MedicineTel-Aviv UniversityTel AvivIsrael
  4. 4.Department of Neurology, Columbia Presbyterian Medical CenterColumbia UniversityNew YorkUSA
  5. 5.Department of NeurologyBeth Israel Medical CenterNew YorkUSA

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