Review for "Whole‐exome sequencing identifies rare pathogenic and candidate variants in sporadic Chinese Han deaf patients"

2019 ◽  
Author(s):  
Hossein Najmabadi
Keyword(s):  
Exome Sequencing ◽  
Whole Exome Sequencing ◽  
Chinese Han ◽  
Whole Exome

scholarly journals Whole-Exome Sequencing Identified a Novel Compound Heterozygous Genotype in ASL in a Chinese Han Patient with Argininosuccinate Lyase Deficiency

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Mei Zhao ◽  
Lingling Hou ◽  
Huajing Teng ◽  
Jinchen Li ◽  
Jiesi Wang ◽  
...  
Keyword(s):  
Enzymatic Activity ◽  
Exome Sequencing ◽  
Whole Exome Sequencing ◽  
Compound Heterozygous ◽  
Significant Activity ◽  
Argininosuccinate Lyase ◽  
Chinese Han ◽  
Lyase Deficiency ◽  
Pathogenic Variants ◽  
Whole Exome

Pathogenic variants in the argininosuccinate lyase (ASL) gene have been shown to cause argininosuccinate lyase deficiency (ASLD); therefore, sequencing analysis offers advantages for prenatal testing and counseling in families afflicted with this condition. Here, we performed a genetic analysis of an ASLD patient and his family with an aim to offer available information for clinical diagnosis. The research subjects were a 23-month-old patient with a high plasma level of citrulline and his unaffected parents. Whole-exome sequencing identified potential related ASL gene mutations in this trio. Enzymatic activity was detected spectrophotometrically by a coupled assay using arginase and measuring urea production. We identified a novel nonsynonymous mutation (c.206A>G, p.Lys69Arg) and a stop mutation (c.637C>T, p.Arg213∗) in ASL in a Chinese Han patient with ASLD. The enzymatic activity of a p.Lys69Arg ASL construct in human embryonic kidney 293T cells was significantly reduced compared to that of the wild-type construct, and no significant activity was observed for the p.Arg213∗ construct. Compound heterozygous p.Lys69Arg and p.Arg213∗ mutations that resulted in reduced ASL enzyme activity were found in a patient with ASLD. This finding expands the clinical spectrum of ASL pathogenic variants.

scholarly journals Whole Exome Sequencing Identifies genetic variants in Chinese Han pregnant women with Venous thromboembolism-a case control study

2020 ◽  
Author(s):  
Yupei Shen ◽  
Yan Zhang ◽  
Ying Xiong ◽  
Zhiping Zhang ◽  
Baohua Zhang ◽  
...  
Keyword(s):  
Venous Thromboembolism ◽  
Pregnant Women ◽  
Exome Sequencing ◽  
Whole Exome Sequencing ◽  
Genetic Variants ◽  
Large Scale ◽  
Single Nucleotide Variants ◽  
Chinese Han ◽  
Whole Exome ◽  
Increased Risk

Abstract Background: Venous thromboembolism (VTE) is a common health problem, causing considerable morbidity and mortality. The incidence of VTE is higher in pregnant women than in those who are not pregnant. However, genetic factors for VTE in pregnant women are largely unknown.Methods: We performed a large-scale prospective cohort study of 65138 pregnancies. Pregnant patients with VTE and pregnant women without VTE were enrolled in the study and sequenced by whole exome sequencing. Functional and enrichment analyses were performed using the DAVID online database. The protein-protein interaction network was constructed using the STRING database. Results: 5810 significant variants were associated with pregnant patients with VTE, including 4874 single nucleotide variants and 936 short deletions which were annotated in 3417 genes (P < 0.05). Fifty-six variants annotated in 46 genes (P < 0.001) and the top 3 variants, including rs2706258 (RNA LOC102724050, p = 1.25 × 10-6), rs17057520 (SCARA3, p = 4.64 × 10-5), and rs3739550 (CAAP1, p = 4.64 × 10-5), were identified. Fourteen low frequency variants had a minor allele frequency (MAF) of less than 1%. Logistic analysis revealed that rs7099478 (GRK5), rs8041208 (WDR72), rs17215792 (KLF7), rs13035688 (KLF7), rs6725221 (KLF7), and rs3214417 (KLF7) were associated with an increased risk of developing VTE (P < 0.05, OR > 1). In addition, combined pathway and PPI analyses revealed that CDC7 and MCM6 involved with DNA replication were associated with VTE in pregnant individuals.Conclusion: The study identified a series of variants and genes that may contribute to VTE in the Chinese pregnant population. Several genes may be risk factors for VTE including KLF7, GRK5, and WDR72. CDC7 and MCM6 may be related to the potential functions of VTE in pregnant women. Notably, the KLF7 gene had 4 genetic variants that were found to be associated with lipid metabolism and cardiovascular diseases. Therefore, further validation is required to reveal the KLF7 mechanism in pregnant women with VTE.

Sign in / Sign up

Export Citation Format

Share Document