Rho Guanine Nucleotide Exchange Factor ARHGEF17 Is a Risk Gene for Intracranial Aneurysms.
- Yang, X., Li, J., Fang, Y., Zhang, Z., Jin, D., Chen, X., Zhao, Y., Li, M., Huan, L., Kent, T.A., Dong, J.F., Jiang, R., Yang, S., Jin, L., Zhang, J., Zhong, T.P., Yu, F.
- Circulation. Genomic and precision medicine 11: e002099 (Journal)
- Registered Authors
- Jin, Daqing, Zhong, Tao P.
- genomics, hemorrhage, human genetics, intracranial aneurysm, subarachnoid, zebrafish
- MeSH Terms
- Cohort Studies
- Gene Frequency
- Genetic Predisposition to Disease*
- Intracranial Aneurysm/genetics*
- Middle Aged
- Rho Guanine Nucleotide Exchange Factors/genetics*
- Risk Factors
- Subarachnoid Hemorrhage/genetics*
- 29997225 Full text @ Circ Genom Precis Med
Yang, X., Li, J., Fang, Y., Zhang, Z., Jin, D., Chen, X., Zhao, Y., Li, M., Huan, L., Kent, T.A., Dong, J.F., Jiang, R., Yang, S., Jin, L., Zhang, J., Zhong, T.P., Yu, F. (2018) Rho Guanine Nucleotide Exchange Factor ARHGEF17 Is a Risk Gene for Intracranial Aneurysms.. Circulation. Genomic and precision medicine. 11:e002099.
Background Intracranial aneurysm (IA) is usually a late-onset disease, affecting 1% to 3% of the general population and leading to life-threatening subarachnoid hemorrhage. Genetic susceptibility has been implicated in IAs, but the causative genes remain elusive.
Methods We performed next-generation sequencing in a discovery cohort of 20 Chinese IA patients. Bioinformatics filters were exploited to search for candidate deleterious variants with rare and low allele frequency. We further examined the candidate variants in a multiethnic sample collection of 86 whole exome sequenced unsolved familial IA cases from 3 previously published studies.
Results We identified that the low-frequency variant c.4394C>A_p.Ala1465Asp (rs2298808) of ARHGEF17 was significantly associated with IA in our Chinese discovery cohort (P=7.3×10-4; odds ratio=7.34). It was subsequently replicated in Japanese familial IA patients (P=0.039; odds ratio=4.00; 95% confidence interval=0.832-14.8) and was associated with IA in the large Chinese sample collection comprising 832 sporadic IA-affected and 599 control individuals (P=0.041; odds ratio=1.51; 95% confidence interval=1.02-Inf). When combining the sequencing data of all familial IA patients from 4 different ethnicities (ie, Chinese, Japanese, European American, and French-Canadian), we identified a significantly increased mutation burden for ARHGEF17 (21/106 versus 11/306; P=8.1×10-7; odds ratio=6.6; 95% confidence interval=2.9-15.8) in cases as compared with controls. In zebrafish, arhgef17 was highly expressed in the brain blood vessel. arhgef17 knockdown caused blood extravasation in the brain region. Endothelial lesions were identified exclusively on cerebral blood vessels in the arhgef17-deficient zebrafish.
Conclusions Our results provide compelling evidence that ARHGEF17 is a risk gene for IA.
Genes / Markers
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Engineered Foreign Genes