Abstract
The genetic background of intracranial artery stenosis (ICAS), a major cause of ischemic stroke, remains elusive. We performed the world’s first genome-wide association study (GWAS) of ICAS using DNA samples from Japanese subjects, to identify the genetic factors associated with ICAS and their correlation with clinical features. We also conducted a phenome-wide association study (PheWAS) of the top variant identified via GWAS to determine its association with systemic disease. The GWAS involved 408 patients with ICAS and 349 healthy controls and utilized an Asian Screening Array of venous blood samples. The PheWAS was performed using genotypic and phenotypic data of the Biobank Japan Project, which contained information on 46 diseases and 60 quantitative trait data from > 150,000 Japanese individuals. The GWAS revealed that the East Asian-specific functional variant of RNF213, rs112735431 (c.14429G > A, p.Arg4810Lys), was associated with ICAS (odds ratio, 12.3; 95% CI 5.5 to 27.5; P = 7.8 × 10−10). Stratified analysis within ICAS cases demonstrated that clinical features of those with and without the risk allele were different. PheWAS indicated that high blood pressure and angina were significantly associated with RNF213 rs112735431. The first GWAS of ICAS, which stratifies subpopulations within the ICAS cases with distinct clinical features, revealed that RNF213 rs112735431 was the most significant variant associated with ICAS. Thus, RNF213 rs112735431 shows potential as an important clinical biomarker that characterizes pleiotropic risk in various vascular diseases, such as blood pressure and angina, thereby facilitating personalized medicine for systemic vascular diseases in East Asian populations.
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Data Availability
The data supporting the findings of this study are available from the corresponding author upon reasonable request from any investigator.
Code Availability
Not applicable.
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Funding
This research was supported by the Tailor-Made Medical Treatment program (the BioBank Japan Project) of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), the Japan Agency for Medical Research and Development (AMED). Nobuhito Saito was supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (21H03041). Satoru Miyawaki was supported by JSPS KAKENHI (19K09473), MSD Life Science Foundation (Public Interest Incorporated Foundation). Yukinori Okada was supported by JSPS KAKENHI (19H01021), AMED (JP20ek0109413, JP20km0405211, JP20ek0410075, and JP20gm4010006), Takeda Science Foundation, and Bioinformatics Initiative of Osaka University Graduate School of Medicine, Osaka University.
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Satoru Miyawaki, Yukinori Okada, and Nobuhito Saito supervised the study. Shogo Dofuku, Kyuto Sonehara, Satoru Miyawaki, and Yukinori Okada wrote the manuscript. Shogo Dofuku, Kyuto Sonehara, Saori Sakaue, K. Suzuki, Jun Hirata, Meiko Takahashi, and Yukinori Okada conducted data analysis. Shogo Dofuku, Satoru Miyawaki, Hideaki Imai, Masahiro Shimizu, Hiroki Hongo, Yuki Shinya, Kenta Ohara, Yu Teranishi, Atsushi Okano, Hideaki Ono, Hirofumi Nakatomi, Akira Teraoka, Kenichi Yamamoto, Yuichi Maeda, Takuro Nii, Toshihiro Kishikawa, Ken Suzuki, Koichi Matsuda, and Atsushi Kumanogoh collected the samples. Ken Suzuki, Jun Hirata, Meiko Takahashi, and Fumihiko Matsuda constructed the data. All authors read and approved the final manuscript.
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Dofuku, S., Sonehara, K., Miyawaki, S. et al. Genome-Wide Association Study of Intracranial Artery Stenosis Followed by Phenome-Wide Association Study. Transl. Stroke Res. 14, 322–333 (2023). https://doi.org/10.1007/s12975-022-01049-w
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DOI: https://doi.org/10.1007/s12975-022-01049-w