A Meta-analysis of the association between different genotypes(G11778A, T14484C and G3460A ) of Leber hereditary optic neuropathy and visual prognosis

AIM：To analyze the influences of different genotypes（G11778A,T14484 C and G3460A） of Leber hereditary optic neuropathy（LHON） on visual prognosis. METHODS： After a systematic literature search,all relevant studies evaluating the association between the three primary mutations of LHON and visual prognosis were included.All statistical tests were calculated with Revman 5.2 and STATA 12.0. RESULTS： Ten independent studies were included finally.A significant association between the three primary mutations and prognostic vision over 0.3 were found in G11778 A versus T14484 C [odds ratio（OR） =0.10,95% confidence interval（CI） =0.05-0.17,P 〈0.001],G11778 A versus G3460A（OR=0.18,95%CI=0.09-0.37,P 〈0.001） and T14484 C versus G3460A（OR =2.45,95% CI =1.10-5.48,P 〈0.05）.In addition,obtained by pairwise comparison,the vision during onset,age of onset and sex ratio of these three kinds of patients,have no statistical significance（P 〉0.05）.CONCLUSION： From pairwise comparison,we conclude that these three different genotypes of LHON are related to patients＇ visual prognosis.The T14484 C patients might have a best prognostic vision,G3460 A second,and G11778 A worst.And there is little relation between the three different genotypes and patients＇ vision,age of onset and sex ratio.

Leber遗传性视神经病变相关的线粒体G11778A,T14484C和G3460A突变筛查

目的探讨Leber遗传性视神经病变(Leber's hereditary optic neuropathy,LHON)相关的线粒体DNA致病性的突变位点,为LHON的分子诊断和早期预防提供理论依据。方法收集2016年6月至2018年1月在杭州市第一人民医院就诊的LHON患者100例以及80例性别、年龄相仿的正常对照。使用PCR-Sanger测序法检测线粒体G11778A,T14484C和G3460A这三个原发性突变位点。结果经过测序比对,我们共发现有5例患者携带这3个致病性线粒体突变位点,其中携带线粒体G11778A突变的患者2例,T14484C突变的患者2例,携带G3460A突变的个体1例,这些突变位点在正常人群中均未发现。结论线粒体G11778A,T14484C以及G3460A突变是LHON相关的致病性突变位点,在临床上开展这些突变位点的早期筛查显得非常有必要,这对于LHON的预防和分子诊断具有较好的指导作用。