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Alpha-synuclein repeat variants and survival in Parkinson's disease.


ABSTRACT: To determine whether ?-synuclein dinucleotide repeat (REP1) genotypes are associated with survival in Parkinson's disease (PD).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.Twenty-one sites contributed data for 6,154 cases. There was no significant association between ?-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).In our large consortium study, ?-synuclein REP1 genotypes were not associated with survival in PD. Further studies of ?-synuclein's role in disease progression and long-term outcomes are needed.

SUBMITTER: Chung SJ 

PROVIDER: S-EPMC4172351 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature

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Alpha-synuclein repeat variants and survival in Parkinson's disease.

Chung Sun Ju SJ   Biernacka Joanna M JM   Armasu Sebastian M SM   Anderson Kari K   Frigerio Roberta R   Aasly Jan O JO   Annesi Grazia G   Bentivoglio Anna Rita AR   Brighina Laura L   Chartier-Harlin Marie-Christine MC   Goldwurm Stefano S   Hadjigeorgiou Georgios G   Jasinska-Myga Barbara B   Jeon Beom Seok BS   Kim Yun Joong YJ   Krüger Rejko R   Lesage Suzanne S   Markopoulou Katerina K   Mellick George G   Morrison Karen E KE   Puschmann Andreas A   Tan Eng-King EK   Crosiers David D   Theuns Jessie J   Van Broeckhoven Christine C   Wirdefeldt Karin K   Wszolek Zbigniew K ZK   Elbaz Alexis A   Maraganore Demetrius M DM  

Movement disorders : official journal of the Movement Disorder Society 20140227 8


<h4>Objectives</h4>To determine whether α-synuclein dinucleotide repeat (REP1) genotypes are associated with survival in Parkinson's disease (PD).<h4>Methods</h4>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.<h4>Results</h4>Twenty-one sites c  ...[more]

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