The genetic association between apolipoprotein E gene polymorphism and Parkinson disease: A meta-Analysis of 47 studies.

ABSTRACT: OBJECTIVE:Although the relationship between apolipoprotein E (ApoE) gene polymorphisms and the risk of Parkinson disease (PD) has been established, the results were inconsistent and inconclusive. METHODS:A comprehensive search examining the association between APOE polymorphisms and PD through PubMed, Embase, Chinese National Knowledge Infrastructure (CNKI), and Cochrane Library databases was performed without published year limited. RESULTS:A total of 47 studies with 7533 cases and 14442 controls were included in present study. The results showed statistically significant association between risk factor ApoE ?4 allele and PD in Asian population (P?=?.003, odds ratio, OR [95% confidence interval, CI]?=?1.43 [1.13,1.80]). Genotype ?2?4 have significantly associated with PD in Asian population (P?=?.004, OR [95% CI]?=?4.43 [1.62,12.10]). Genotype ?3?4 was significantly associated with PD in Latin-American population (P?=?.01, OR [95% CI]?=?1.44 [1.08,1.91]). In addition, the frequency of the genotype ?3?4 is lower in PD group than that in the control group in Caucasian population, and the difference of genotype ?3?4 is also statistically significant (P?=?.006, OR [95% CI]?=?0.86 [0.77,0.96]). Although significant heterogeneity was observed among all studies, the results were shown to be stabilized by sensitive analysis. No publish bias was observed. CONCLUSIONS:This meta-analysis suggests that the APOE ?4, but no ?2, might be a risk factor for PD in Asian population. Furthermore, the genotype ?2?4 may be a susceptible factor for PD in Asian population, and the genotype ?3?4 may be a susceptible factor for PD in both Caucasian and Latin-American populations.

SUBMITTER: Li J 

PROVIDER: S-EPMC6221690 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature