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Alpha‐synuclein repeat variants and survival in Parkinson's disease
Author(s) -
Chung Sun Ju,
Biernacka Joanna M.,
Armasu Sebastian M.,
Anderson Kari,
Frigerio Roberta,
Aasly Jan O.,
Annesi Grazia,
Bentivoglio Anna Rita,
Brighina Laura,
ChartierHarlin MarieChristine,
Goldwurm Stefano,
Hadjigeorgiou Georgios,
JasinskaMyga Barbara,
Jeon Beom Seok,
Kim Yun Joong,
Krüger Rejko,
Lesage Suzanne,
Markopoulou Katerina,
Mellick George,
Morrison Karen E.,
Puschmann Andreas,
Tan EngKing,
Crosiers David,
Theuns Jessie,
Broeckhoven Christine,
Wirdefeldt Karin,
Wszolek Zbigniew K.,
Elbaz Alexis,
Maraganore Demetrius M.
Publication year - 2014
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.25841
Subject(s) - hazard ratio , proportional hazards model , genotype , disease , medicine , parkinson's disease , confidence interval , epidemiology , survival analysis , oncology , biology , genetics , gene
Objectives To determine whether α‐synuclein dinucleotide repeat (REP1) genotypes are associated with survival in Parkinson's disease (PD). Methods Investigators from the Genetic Epidemiology of Parkinson's Disease Consortium provided REP1 genotypes and baseline and follow‐up clinical data for cases. The primary outcome was time to death. Cox proportional hazards regression models were used to assess the association of REP1 genotypes with survival. Results Twenty‐one sites contributed data for 6,154 cases. There was no significant association between α‐synuclein REP1 genotypes and survival in PD. However, there was a significant association between REP1 genotypes and age at onset of PD (hazard ratio: 1.06; 95% confidence interval: 1.01‐1.10; P value = 0.01). Conclusions In our large consortium study, α‐synuclein REP1 genotypes were not associated with survival in PD. Further studies of α‐synuclein's role in disease progression and long‐term outcomes are needed. © 2014 International Parkinson and Movement Disorder Society