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Variants in the SNCA gene associate with motor progression while variants in the MAPT gene associate with the severity of Parkinson's disease.

Abstract：

INTRODUCTION:It is well known that α-synuclein (SNCA) and microtubule associated protein (MAPT) genes predispose individuals to develop Parkinson's disease (PD). However, whether these genes contribute to differences in the variable progression observed in PD is obscure. This study aims to evaluate the association of common variants in SNCA (rs11931074, rs894278) and MAPT (rs242557_H1c haplotype, rs3744456) genes with the severity and duration of motor and cognitive performance. METHODS:296 Chinese patients with PD were recruited from Shanghai Ruijin Hospital. Motor performance was assessed using the Unified Parkinson's Disease Rating Scale (UPDRS-III) and Hoehn &Yahar (H&Y) stages and cognitive performance using the Mini-Mental Status Examination (MMSE). Genetic associations were analysed using general linear modelling for severity and Cox regression analysis for duration to motor (UPDRS-III≥36 or H&Y ≥ 3, average duration 13 years) and cognitive (MMSE<27, average duration 8 years) cutoffs, covarying for age and gender. RESULTS:The severity of motor function associated with synergic interaction of SNCA (rs11931074) and MAPT (rs3744456) (p ≤ 0.05) while longer survival to the motor cutoff associated with SNCA (rs11931074/T, HR = 0.4, p = 0.03). Increased severity of cognitive function associated with MAPT (H1c haplotype, p = 0.05) with none of the risk alleles chosen associated with survival to the cognitive cutoff (p > 0.05). CONCLUSION:Our findings add further data showing that common variants in SNCA and MAPT genes contribute to variability in progression of PD, with SNCA variants associating with motor progression while MAPT variants associated with clinical severity.

journal_name

Parkinsonism Relat Disord

journal_title

Parkinsonism & related disorders

authors

Wang G,Huang Y,Chen W,Chen S,Wang Y,Xiao Q,Liu J,Fung VS,Halliday G,Chen S

doi

10.1016/j.parkreldis.2015.12.018

subject

Has Abstract

pub_date

2016-03-01 00:00:00

pages

89-94

eissn

1353-8020

issn

1873-5126

pii

S1353-8020(15)30071-7

journal_volume

24

pub_type

杂志文章

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