错义突变
遗传学
桑格测序
产前诊断
复合杂合度
先证者
突变
遗传咨询
无义突变
生物
基因型
基因
胎儿
怀孕
作者
Shanshan Shi,Xiaomei Tang,Zijian Shi,Qing-Bing Zha,Ying Cheng,Zhan‐Hui Zhang,Xiaomin Xiao,Yan‐Dong Yang,Yuan‐Zong Song
出处
期刊:PubMed
日期:2018-08-10
卷期号:35 (4): 475-479
被引量:1
标识
DOI:10.3760/cma.j.issn.1003-9406.2018.04.003
摘要
To detect mutations of SLC25A13 gene in 20 families affected with citrin deficiency and provide prenatal diagnosis for them.The 20 probands and their parents were subjected to high-frequency mutation screening combined with Sanger sequencing. After confirming the genotype of each pedigree, genetic counseling and prenatal diagnosis were performed for their subsequent pregnancies.Biallelic pathogenic mutations of the SLC25A13 gene were identified in all probands. These included three deletions (c.851del4, c.1092_1095delT, and c.495delA), two splice-site mutations (IVS6+5G to A and IVS11+1G to A), two nonsense mutations (c.775C to T (p.Q259X) and c.72T to A (p.Y24X)), one duplication mutation (c.1638_1660dup), one insertion (IVSl6ins3kb), and one missense mutation (c.1775A to C (p.Q592P)). Among 24 fetuses undergoing prenatal diagnosis, 8 had normal genotypes, 11 were mutation carriers, while 5 harbored biallelic mutations. Those with wild type alleles or heterozygous SLC25A13 mutations were delivered. Two fetuses harboring homozygous c.851del4 mutations were also delivered. Three fetuses harboring biallelic mutations were terminated.Analysis of SLC25A13 gene mutations in families affected by citrin deficiency can provide evidence for molecular diagnosis and facilitate genetic counseling and prenatal diagnosis for the subsequent pregnancy, which can effectively reduce the risk of birth of further affected children.
科研通智能强力驱动
Strongly Powered by AbleSci AI