Association between GABRG2 rs211037 polymorphism and idiopathic generalized epilepsies:a meta-analysis

Background:We performed this meta-analysis to investigate the association between GABRG2 rs211037polymorphism and the risk for idiopathic generalized epilepsies(IGEs).Methods:Medline,Embase,Cochrane Library and Chinese National Knowledge Infrastructure(CNKI)databases were searched for eligible studies(until May 5,2020)on the association between GABRG2 rs211037 polymorphism and IGE.The odds ratios were calculated using a fixed or random model in STATA 15.0 software.Subgroup analyses for ethnicity,age,source of controls,type of seizure syndrome and therapeutic responses were conducted.Results:We found no significant associations between GABRG2 rs211037 polymorphism and the susceptibility to IGEs.In addition,no significant association was detected between GABRG2 rs211037 polymorphism and drug resistance in IGE patients.The results did not change after stratification by Asian population,healthy controls,children,juvenile myoclonic epilepsy,and childhood absence epilepsy.Conclusion:The current studies indicated that the GABRG2 rs211037 polymorphism was not related to susceptibility or drug resistance of IGE.Further well-designed studies are needed to verify the results.

Association between GABRG2 rs211037 polymorphism and febrile seizures:a metaanalysis

Background:Emerging evidence has implied that the GABRG2 gene play a role in the mechanism of febrile seizure(FS),however,the relationship between GABRG2 rs211037 polymorphism and the risk of FS remains controversial.This meta-analysis was conducted to investigate the relationship of GABRG2 rs211037 polymorphism with the susceptibility to FS.Methods:MEDLINE,Embase,Cochrane Library and CNKI databases were searched(until April 6,2019)for eligible studies on the relationship between GABRG2 rs211037 polymorphism and FS.We calculated the odds ratios(ORs)by a fixed or random model with the STATA 15.0 software.Subgroup analyses for the ethnicity,the source of the control,and age and sex matching of controls were conducted.Results:A total of 8 studies consisting of 775 FS patients and 5162 controls were included in this study.Based on the overall data,he GABRG2 rs211037 polymorphism was not significantly associated with the risk of FS(TT+CT vs CC:OR=0.95,95%CI 0.64–1.41,P=0.80).Notably,the GABRG2 rs211037 variant was significantly associated with decreased risk of FS in Asian populations(TT vs CT+CC:OR=0.63,95%CI 0.45–0.88,P=0.006),but increased risk in Caucasian populations(CT vs CC:OR=1.56,95%CI 1.14–2.15,P=0.006).Significant associations were also detected when healthy controls out of the whole controls were employed for comparison(TT vs CT+CC:OR=0.59,95%CI 0.45–0.77,P<0.001)and when data from studies with age-and sex-matched controls were used(TT+CT vs CC:OR=0.60,95%CI 0.43–0.86,P=0.001).Conclusion:The GABRG2 rs211037 polymorphism may decrease the risk of FS in Asian populations,while increasing the risk in Caucasian populations.Further well-designed studies with large sample sizes are essential to verify the conclusions in other ethnicities.