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Taylor CS, Lawson DJ. Heritability of complex traits in sub-populations experiencing bottlenecks and growth. J Hum Genet 2024; 69:329-335. [PMID: 38589509 PMCID: PMC11199143 DOI: 10.1038/s10038-024-01249-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 03/20/2024] [Accepted: 03/23/2024] [Indexed: 04/10/2024]
Abstract
Populations that have experienced a bottleneck are regularly used in Genome Wide Association Studies (GWAS) to investigate variants associated with complex traits. It is generally understood that these isolated sub-populations may experience high frequency of otherwise rare variants with large effect size, and therefore provide a unique opportunity to study said trait. However, the demographic history of the population under investigation affects all SNPs that determine the complex trait genome-wide, changing its heritability and genetic architecture. We use a simulation based approach to identify the impact of the demographic processes of drift, expansion, and migration on the heritability of complex trait. We show that demography has considerable impact on complex traits. We then investigate the power to resolve heritability of complex traits in GWAS studies subjected to demographic effects. We find that demography is an important component for interpreting inference of complex traits and has a nuanced impact on the power of GWAS. We conclude that demographic histories need to be explicitly modelled to properly quantify the history of selection on a complex trait.
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Affiliation(s)
| | - Daniel J Lawson
- School of Mathematics, University of Bristol, Bristol, UK.
- MRC Integrative Epidemiology Unit, Bristol Medical School, University of Bristol, Bristol, UK.
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Paavola JT, Jokimäki J, Huttunen TJ, Fraunberg MVUZ, Koivisto T, Kämäräinen OP, Lång M, Jääskeläinen JE, Kälviäinen R, Lindgren AE, Huttunen J. Long-term Risk of Epilepsy in Subarachnoid Hemorrhage Survivors With Positive Family History: A Population-Based Follow-up Study. Neurology 2023; 101:e1623-e1632. [PMID: 37643884 PMCID: PMC10585675 DOI: 10.1212/wnl.0000000000207737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 06/20/2023] [Indexed: 08/31/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Aneurysmal subarachnoid hemorrhage (aSAH) is a devastating form of stroke affecting the working-age population, where epilepsy is a common complication and major prognostic factor for increased morbidity in aSAH survivors. The objective of this analysis was to assess whether epilepsy in first-degree relatives is a risk of developing epilepsy after aSAH. METHODS We used a region-specific database that includes all cases of unruptured and ruptured saccular intracranial aneurysm admitted to Kuopio University Hospital from its defined Eastern Finnish catchment population. We also retrieved data from Finnish national health registries for prescription drug purchases and reimbursement, hospital discharge, and cause of death and linked them to patients with aSAH, their first-degree relatives, and population controls matched 3:1 by age, sex, and birth municipality. Cox regression modeling and Kaplan-Meier survival curves were used for analysis. RESULTS We examined data for 760 consecutive 12-month survivors of aSAH, born in 1950 or after, with a first aSAH from January 1, 1995, to December 31, 2018. Of the 760 patients (median age, 47 years; 53% female; median follow-up, 11 years), 111 (15%) developed epilepsy at a median of 7 months (interquartile range, 2-14 months) after admission for aSAH. Of the 2,240 population controls and 4,653 first-degree relatives of patients with aSAH, 23 (0.9%) and 80 (1.7%), respectively, developed epilepsy during the follow-up period. Among 79 patients with epilepsy in first-degree relatives, 22 (28%) developed epilepsy after aSAH; by contrast, among 683 patients with no epilepsy in first-degree relatives, 89 (13%) developed epilepsy after aSAH. Having at least 1 relative with epilepsy was an independent risk factor of epilepsy after aSAH (hazard ratio, 2.44; 95% CI 1.51-3.95). Cumulative 1-year rates by first-degree relationship were 40% with 1 or more children with epilepsy, 38% with 1 or more affected parents, 5% with 1 or more affected siblings, and 10% with no relatives with epilepsy. DISCUSSION Patients who developed epilepsy after aSAH were significantly more likely to have first-degree relatives with epilepsy than those who did not develop epilepsy after the aSAH.
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Affiliation(s)
- Juho Tapio Paavola
- From the Neurosurgery of NeuroCenter (J.T.P., T.J.H., T.K., O.-P.K., J.E.J., R.K., A.E.L., J.H.), Kuopio University Hospital; Institute of Clinical Medicine (J.T.P., J.J., T.J.H., T.K., O.-P.K., M.L., J.E.J., A.E.L., J.H.), Faculty of Health Sciences, University of Eastern Finland, Kuopio; Department of Neurosurgery (M.U.Z.F.), Oulu University Hospital; Research Unit of Clinical Medicine (M.U.Z.F.), University of Oulu; Neurointensive Care Unit (M.L.), Kuopio University Hospital; Epilepsy Center (R.K.), Neuro Center, Kuopio University Hospital, Member of the European Reference Network EpiCARE; and Department of Clinical Radiology (A.E.L.), Kuopio University Hospital, Finland.
| | - Jenna Jokimäki
- From the Neurosurgery of NeuroCenter (J.T.P., T.J.H., T.K., O.-P.K., J.E.J., R.K., A.E.L., J.H.), Kuopio University Hospital; Institute of Clinical Medicine (J.T.P., J.J., T.J.H., T.K., O.-P.K., M.L., J.E.J., A.E.L., J.H.), Faculty of Health Sciences, University of Eastern Finland, Kuopio; Department of Neurosurgery (M.U.Z.F.), Oulu University Hospital; Research Unit of Clinical Medicine (M.U.Z.F.), University of Oulu; Neurointensive Care Unit (M.L.), Kuopio University Hospital; Epilepsy Center (R.K.), Neuro Center, Kuopio University Hospital, Member of the European Reference Network EpiCARE; and Department of Clinical Radiology (A.E.L.), Kuopio University Hospital, Finland
| | - Terhi Johanna Huttunen
- From the Neurosurgery of NeuroCenter (J.T.P., T.J.H., T.K., O.-P.K., J.E.J., R.K., A.E.L., J.H.), Kuopio University Hospital; Institute of Clinical Medicine (J.T.P., J.J., T.J.H., T.K., O.-P.K., M.L., J.E.J., A.E.L., J.H.), Faculty of Health Sciences, University of Eastern Finland, Kuopio; Department of Neurosurgery (M.U.Z.F.), Oulu University Hospital; Research Unit of Clinical Medicine (M.U.Z.F.), University of Oulu; Neurointensive Care Unit (M.L.), Kuopio University Hospital; Epilepsy Center (R.K.), Neuro Center, Kuopio University Hospital, Member of the European Reference Network EpiCARE; and Department of Clinical Radiology (A.E.L.), Kuopio University Hospital, Finland
| | - Mikael von Und Zu Fraunberg
- From the Neurosurgery of NeuroCenter (J.T.P., T.J.H., T.K., O.-P.K., J.E.J., R.K., A.E.L., J.H.), Kuopio University Hospital; Institute of Clinical Medicine (J.T.P., J.J., T.J.H., T.K., O.-P.K., M.L., J.E.J., A.E.L., J.H.), Faculty of Health Sciences, University of Eastern Finland, Kuopio; Department of Neurosurgery (M.U.Z.F.), Oulu University Hospital; Research Unit of Clinical Medicine (M.U.Z.F.), University of Oulu; Neurointensive Care Unit (M.L.), Kuopio University Hospital; Epilepsy Center (R.K.), Neuro Center, Kuopio University Hospital, Member of the European Reference Network EpiCARE; and Department of Clinical Radiology (A.E.L.), Kuopio University Hospital, Finland
| | - Timo Koivisto
- From the Neurosurgery of NeuroCenter (J.T.P., T.J.H., T.K., O.-P.K., J.E.J., R.K., A.E.L., J.H.), Kuopio University Hospital; Institute of Clinical Medicine (J.T.P., J.J., T.J.H., T.K., O.-P.K., M.L., J.E.J., A.E.L., J.H.), Faculty of Health Sciences, University of Eastern Finland, Kuopio; Department of Neurosurgery (M.U.Z.F.), Oulu University Hospital; Research Unit of Clinical Medicine (M.U.Z.F.), University of Oulu; Neurointensive Care Unit (M.L.), Kuopio University Hospital; Epilepsy Center (R.K.), Neuro Center, Kuopio University Hospital, Member of the European Reference Network EpiCARE; and Department of Clinical Radiology (A.E.L.), Kuopio University Hospital, Finland
| | - Olli-Pekka Kämäräinen
- From the Neurosurgery of NeuroCenter (J.T.P., T.J.H., T.K., O.-P.K., J.E.J., R.K., A.E.L., J.H.), Kuopio University Hospital; Institute of Clinical Medicine (J.T.P., J.J., T.J.H., T.K., O.-P.K., M.L., J.E.J., A.E.L., J.H.), Faculty of Health Sciences, University of Eastern Finland, Kuopio; Department of Neurosurgery (M.U.Z.F.), Oulu University Hospital; Research Unit of Clinical Medicine (M.U.Z.F.), University of Oulu; Neurointensive Care Unit (M.L.), Kuopio University Hospital; Epilepsy Center (R.K.), Neuro Center, Kuopio University Hospital, Member of the European Reference Network EpiCARE; and Department of Clinical Radiology (A.E.L.), Kuopio University Hospital, Finland
| | - Maarit Lång
- From the Neurosurgery of NeuroCenter (J.T.P., T.J.H., T.K., O.-P.K., J.E.J., R.K., A.E.L., J.H.), Kuopio University Hospital; Institute of Clinical Medicine (J.T.P., J.J., T.J.H., T.K., O.-P.K., M.L., J.E.J., A.E.L., J.H.), Faculty of Health Sciences, University of Eastern Finland, Kuopio; Department of Neurosurgery (M.U.Z.F.), Oulu University Hospital; Research Unit of Clinical Medicine (M.U.Z.F.), University of Oulu; Neurointensive Care Unit (M.L.), Kuopio University Hospital; Epilepsy Center (R.K.), Neuro Center, Kuopio University Hospital, Member of the European Reference Network EpiCARE; and Department of Clinical Radiology (A.E.L.), Kuopio University Hospital, Finland
| | - Juha Eerik Jääskeläinen
- From the Neurosurgery of NeuroCenter (J.T.P., T.J.H., T.K., O.-P.K., J.E.J., R.K., A.E.L., J.H.), Kuopio University Hospital; Institute of Clinical Medicine (J.T.P., J.J., T.J.H., T.K., O.-P.K., M.L., J.E.J., A.E.L., J.H.), Faculty of Health Sciences, University of Eastern Finland, Kuopio; Department of Neurosurgery (M.U.Z.F.), Oulu University Hospital; Research Unit of Clinical Medicine (M.U.Z.F.), University of Oulu; Neurointensive Care Unit (M.L.), Kuopio University Hospital; Epilepsy Center (R.K.), Neuro Center, Kuopio University Hospital, Member of the European Reference Network EpiCARE; and Department of Clinical Radiology (A.E.L.), Kuopio University Hospital, Finland
| | - Reetta Kälviäinen
- From the Neurosurgery of NeuroCenter (J.T.P., T.J.H., T.K., O.-P.K., J.E.J., R.K., A.E.L., J.H.), Kuopio University Hospital; Institute of Clinical Medicine (J.T.P., J.J., T.J.H., T.K., O.-P.K., M.L., J.E.J., A.E.L., J.H.), Faculty of Health Sciences, University of Eastern Finland, Kuopio; Department of Neurosurgery (M.U.Z.F.), Oulu University Hospital; Research Unit of Clinical Medicine (M.U.Z.F.), University of Oulu; Neurointensive Care Unit (M.L.), Kuopio University Hospital; Epilepsy Center (R.K.), Neuro Center, Kuopio University Hospital, Member of the European Reference Network EpiCARE; and Department of Clinical Radiology (A.E.L.), Kuopio University Hospital, Finland
| | - Antti Elias Lindgren
- From the Neurosurgery of NeuroCenter (J.T.P., T.J.H., T.K., O.-P.K., J.E.J., R.K., A.E.L., J.H.), Kuopio University Hospital; Institute of Clinical Medicine (J.T.P., J.J., T.J.H., T.K., O.-P.K., M.L., J.E.J., A.E.L., J.H.), Faculty of Health Sciences, University of Eastern Finland, Kuopio; Department of Neurosurgery (M.U.Z.F.), Oulu University Hospital; Research Unit of Clinical Medicine (M.U.Z.F.), University of Oulu; Neurointensive Care Unit (M.L.), Kuopio University Hospital; Epilepsy Center (R.K.), Neuro Center, Kuopio University Hospital, Member of the European Reference Network EpiCARE; and Department of Clinical Radiology (A.E.L.), Kuopio University Hospital, Finland
| | - Jukka Huttunen
- From the Neurosurgery of NeuroCenter (J.T.P., T.J.H., T.K., O.-P.K., J.E.J., R.K., A.E.L., J.H.), Kuopio University Hospital; Institute of Clinical Medicine (J.T.P., J.J., T.J.H., T.K., O.-P.K., M.L., J.E.J., A.E.L., J.H.), Faculty of Health Sciences, University of Eastern Finland, Kuopio; Department of Neurosurgery (M.U.Z.F.), Oulu University Hospital; Research Unit of Clinical Medicine (M.U.Z.F.), University of Oulu; Neurointensive Care Unit (M.L.), Kuopio University Hospital; Epilepsy Center (R.K.), Neuro Center, Kuopio University Hospital, Member of the European Reference Network EpiCARE; and Department of Clinical Radiology (A.E.L.), Kuopio University Hospital, Finland
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Basu K, Dey A, Kiran M. Inefficient splicing of long non-coding RNAs is associated with higher transcript complexity in human and mouse. RNA Biol 2023; 20:563-572. [PMID: 37543950 PMCID: PMC10405767 DOI: 10.1080/15476286.2023.2242649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 07/23/2023] [Accepted: 07/26/2023] [Indexed: 08/08/2023] Open
Abstract
Recent reports show that long non-coding RNAs (lncRNAs) have inefficient splicing and fewer alternative splice variants than mRNAs. Here, we have explored the efficiency of lncRNAs and mRNAs in producing various splice variants, given the number of exons in humans and mice. Intriguingly, lncRNAs produce more splice variants per exon, referred to as Transcript Complexity, than mRNAs. Most lncRNA splice variants are the product of the alternative last exon and exon skipping. LncRNAs and mRNAs with higher transcript complexity have shorter intron lengths. Longer exon length and GC/AG at 5'/3' splice sites are associated with higher transcript complexity in lncRNAs. Lastly, our results indicate that inefficient splicing of lncRNAs may facilitate multiple introns splicing and, thus, more spliced products per exon.
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Affiliation(s)
- Koushiki Basu
- Department of Systems and Computational Biology, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Anubha Dey
- Department of Systems and Computational Biology, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Manjari Kiran
- Department of Systems and Computational Biology, School of Life Sciences, University of Hyderabad, Hyderabad, India
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Hale AT, He J, Jones J. Integrative Genomics Analysis Implicates Decreased FGD6 Expression Underlying Risk of Intracranial Aneurysm Rupture. NEUROSURGERY OPEN 2022. [DOI: 10.1227/neuopn.0000000000000025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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Hale AT, He J, Jones J. Multinational Genome-Wide Association Study and Functional Genomics Analysis Implicates Decreased SIRT3 Expression Underlying Intracranial Aneurysm Risk. Neurosurgery 2022; 91:625-632. [PMID: 35838494 DOI: 10.1227/neu.0000000000002082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 05/23/2022] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND The genetic mechanisms regulating intracranial aneurysm (IA) formation and rupture are largely unknown. To identify germline-genetic risk factors for IA, we perform a multinational genome-wide association study (GWAS) of individuals from the United Kingdom, Finland, and Japan. OBJECTIVE To identify a shared, multinational genetic basis of IA. METHODS Using GWAS summary statistics from UK Biobank, FinnGen, and Biobank Japan, we perform a meta-analysis of IA, containing ruptured and unruptured IA cases. Logistic regression was used to identify IA-associated single-nucleotide polymorphisms. Effect size was calculated using the coefficient r , estimating the contribution of the single-nucleotide polymorphism to the genetic variance of the trait. Genome-wide significance was set at 5.0 × 10 -8 . Expression quantitative trait loci mapping and functional genomics approaches were used to infer mechanistic consequences of implicated variants. RESULTS Our cohort contained 155 154 individuals (3132 IA cases and 152 022 controls). We identified 4 genetic loci reaching genome-wide: rs73392700 ( SIRT3 , effect size = 0.28, P = 4.3 × 10 -12 ), rs58721068 ( EDNRA , effect size = -0.20, P = 4.8 × 10 -12 ), rs4977574 ( AL359922.1 , effect size = 0.18, P = 7.9 × 10 -12 ), and rs11105337 ( ATP2B1 , effect size = -0.15, P = 3.4 × 10 -8 ). Expression quantitative trait loci mapping suggests that rs73392700 has a large effect size on SIRT3 gene expression in arterial and muscle, but not neurological, tissues. Functional genomics analysis suggests that rs73392700 causes decreased SIRT3 gene expression. CONCLUSION We perform a multinational GWAS of IA and identify 4 genetic risk loci, including 2 novel IA risk loci ( SIRT3 and AL359922.1 ). Identification of high-risk genetic loci across ancestries will enable population-genetic screening approaches to identify patients with IA.
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Affiliation(s)
- Andrew T Hale
- Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Jing He
- Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Jesse Jones
- Department of Neurosurgery, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Genome-wide linkage analysis combined with genome sequencing in large families with intracranial aneurysms. Eur J Hum Genet 2022; 30:833-840. [PMID: 35228681 PMCID: PMC9259640 DOI: 10.1038/s41431-022-01059-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/15/2021] [Accepted: 01/25/2022] [Indexed: 11/24/2022] Open
Abstract
Rupture of an intracranial aneurysm (IA) leads to aneurysmal subarachnoid haemorrhage (ASAH), a severe type of stroke. Some rare variants that cause IA in families have been identified, but still, the majority of genetic causes, as well as the biological mechanisms of IA development and rupture, remain unknown. We aimed to identify rare, damaging variants for IA in three large Dutch families with multiple affected members with IA (N = 9, 11, and 6). By combining linkage analysis and genome sequencing (GS), we identified six rare and damaging variants for which all cases within one of the families were heterozygous. These variants were p.Tyr87Cys in SYCP1, p.Phe1077Leu in FMNL2, p.Thr754Lys in TBC1D2, p.Arg321His in ZNF782, p.Arg979Trp in CCDC180, and p.Val125Met in NCBP1. None of the variants showed association with IA status in a large cohort of 937 patients from the general IA patient population and 1046 controls. Gene expression in IA and cerebral artery tissue further prioritized FMNL2 and TBC1D2 as potential important players in IA pathophysiology. Further studies are needed to characterize the functional consequences of the identified variants and their role in the biological mechanisms of IA.
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Whole-exome analysis in Tunisian Imazighen and Arabs shows the impact of demography in functional variation. Sci Rep 2021; 11:21125. [PMID: 34702931 PMCID: PMC8548440 DOI: 10.1038/s41598-021-00576-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 10/14/2021] [Indexed: 11/08/2022] Open
Abstract
Human populations are genetically affected by their demographic history, which shapes the distribution of their functional genomic variation. However, the genetic impact of recent demography is debated. This issue has been studied in different populations, but never in North Africans, despite their relevant cultural and demographic diversity. In this study we address the question by analyzing new whole-exome sequences from two culturally different Tunisian populations, an isolated Amazigh population and a close non-isolated Arab-speaking population, focusing on the distribution of functional variation. Both populations present clear differences in their variant frequency distribution, in general and for putatively damaging variation. This suggests a relevant effect in the Amazigh population of genetic isolation, drift, and inbreeding, pointing to relaxed purifying selection. We also discover the enrichment in Imazighen of variation associated to specific diseases or phenotypic traits, but the scarce genetic and biomedical data in the region limits further interpretation. Our results show the genomic impact of recent demography and reveal a clear genetic differentiation probably related to culture. These findings highlight the importance of considering cultural and demographic heterogeneity within North Africa when defining population groups, and the need for more data to improve knowledge on the region's health and disease landscape.
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Abstract
Rupture of an intracranial aneurysm leads to aneurysmal subarachnoid hemorrhage, a severe type of stroke which is, in part, driven by genetic variation. In the past 10 years, genetic studies of IA have boosted the number of known genetic risk factors and improved our understanding of the disease. In this review, we provide an overview of the current status of the field and highlight the latest findings of family based, sequencing, and genome-wide association studies. We further describe opportunities of genetic analyses for understanding, prevention, and treatment of the disease.
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Affiliation(s)
- Mark K Bakker
- University Medical Center Utrecht Brain Center, Department of Neurology and Neurosurgery, University Medical Center Utrecht, the Netherlands
| | - Ynte M Ruigrok
- University Medical Center Utrecht Brain Center, Department of Neurology and Neurosurgery, University Medical Center Utrecht, the Netherlands
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Poppenberg KE, Zebraski HR, Avasthi N, Waqas M, Siddiqui AH, Jarvis JN, Tutino VM. Epigenetic landscapes of intracranial aneurysm risk haplotypes implicate enhancer function of endothelial cells and fibroblasts in dysregulated gene expression. BMC Med Genomics 2021; 14:162. [PMID: 34134708 PMCID: PMC8210394 DOI: 10.1186/s12920-021-01007-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 06/02/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Genome-wide association studies have identified many single nucleotide polymorphisms (SNPs) associated with increased risk for intracranial aneurysm (IA). However, how such variants affect gene expression within IA is poorly understood. We used publicly-available ChIP-Seq data to study chromatin landscapes surrounding risk loci to determine whether IA-associated SNPs affect functional elements that regulate gene expression in cell types comprising IA tissue. METHODS We mapped 16 significant IA-associated SNPs to linkage disequilibrium (LD) blocks within human genome. Using ChIP-Seq data, we examined these regions for presence of H3K4me1, H3K27ac, and H3K9ac histone marks (typically associated with latent/active enhancers). This analysis was conducted in several cell types that are present in IA tissue (endothelial cells, smooth muscle cells, fibroblasts, macrophages, monocytes, neutrophils, T cells, B cells, NK cells). In cell types with significant histone enrichment, we used HiC data to investigate topologically associated domains (TADs) encompassing the LD blocks to identify genes that may be affected by IA-associated variants. Bioinformatics were performed to determine the biological significance of these genes. Genes within HiC-defined TADs were also compared to differentially expressed genes from RNA-seq/microarray studies of IA tissues. RESULTS We found that endothelial cells and fibroblasts, rather than smooth muscle or immune cells, have significant enrichment for enhancer marks on IA risk haplotypes (p < 0.05). Bioinformatics demonstrated that genes within TADs subsuming these regions are associated with structural extracellular matrix components and enzymatic activity. The majority of histone marked TADs (83% fibroblasts [IMR90], 77% HUVEC) encompassed at least one differentially expressed gene from IA tissue studies. CONCLUSIONS These findings provide evidence that genetic variants associated with IA risk act on endothelial cells and fibroblasts. There is strong circumstantial evidence that this may be mediated through altered enhancer function, as genes in TADs encompassing enhancer marks have also been shown to be differentially expressed in IA tissue. These genes are largely related to organization and regulation of the extracellular matrix. This study builds upon our previous (Poppenberg et al., BMC Med Genomics, 2019) by including a more diverse set of data from additional cell types and by identifying potential affected genes (i.e. those in TADs).
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Affiliation(s)
- Kerry E. Poppenberg
- Canon Stroke and Vascular Research Center, University at Buffalo, Clinical and Translational Research Center, 875 Ellicott Street, Buffalo, NY 14214 USA
- Department of Neurosurgery, University at Buffalo, Buffalo, NY USA
| | - Haley R. Zebraski
- Canon Stroke and Vascular Research Center, University at Buffalo, Clinical and Translational Research Center, 875 Ellicott Street, Buffalo, NY 14214 USA
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY USA
| | - Naval Avasthi
- Canon Stroke and Vascular Research Center, University at Buffalo, Clinical and Translational Research Center, 875 Ellicott Street, Buffalo, NY 14214 USA
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY USA
| | - Muhammad Waqas
- Canon Stroke and Vascular Research Center, University at Buffalo, Clinical and Translational Research Center, 875 Ellicott Street, Buffalo, NY 14214 USA
- Department of Neurosurgery, University at Buffalo, Buffalo, NY USA
| | - Adnan H. Siddiqui
- Canon Stroke and Vascular Research Center, University at Buffalo, Clinical and Translational Research Center, 875 Ellicott Street, Buffalo, NY 14214 USA
- Department of Neurosurgery, University at Buffalo, Buffalo, NY USA
| | - James N. Jarvis
- Department of Pediatrics, University at Buffalo, Buffalo, NY USA
| | - Vincent M. Tutino
- Canon Stroke and Vascular Research Center, University at Buffalo, Clinical and Translational Research Center, 875 Ellicott Street, Buffalo, NY 14214 USA
- Department of Neurosurgery, University at Buffalo, Buffalo, NY USA
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY USA
- Department of Pathology and Anatomical Sciences, University at Buffalo, Buffalo, NY USA
- Department of Mechanical and Aerospace Engineering, University at Buffalo, Buffalo, NY USA
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Endogenous animal models of intracranial aneurysm development: a review. Neurosurg Rev 2021; 44:2545-2570. [PMID: 33501561 DOI: 10.1007/s10143-021-01481-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 01/05/2021] [Accepted: 01/18/2021] [Indexed: 12/13/2022]
Abstract
The pathogenesis and natural history of intracranial aneurysm (IA) remains poorly understood. To this end, animal models with induced cerebral vessel lesions mimicking human aneurysms have provided the ability to greatly expand our understanding. In this review, we comprehensively searched the published literature to identify studies that endogenously induced IA formation in animals. Studies that constructed aneurysms (i.e., by surgically creating a sac) were excluded. From the eligible studies, we reported information including the animal species, method for aneurysm induction, aneurysm definitions, evaluation methods, aneurysm characteristics, formation rate, rupture rate, and time course. Between 1960 and 2019, 174 articles reported endogenous animal models of IA. The majority used flow modification, hypertension, and vessel wall weakening (i.e., elastase treatment) to induce IAs, primarily in rats and mice. Most studies utilized subjective or qualitative descriptions to define experimental aneurysms and histology to study them. In general, experimental IAs resembled the pathobiology of the human disease in terms of internal elastic lamina loss, medial layer degradation, and inflammatory cell infiltration. After the early 2000s, many endogenous animal models of IA began to incorporate state-of-the-art technology, such as gene expression profiling and 9.4-T magnetic resonance imaging (MRI) in vivo imaging, to quantitatively analyze the biological mechanisms of IA. Future studies aimed at longitudinally assessing IA pathobiology in models that incorporate aneurysm growth will likely have the largest impact on our understanding of the disease. We believe this will be aided by high-resolution, small animal, survival imaging, in situ live-cell imaging, and next-generation omics technology.
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Bakker MK, van der Spek RAA, van Rheenen W, Morel S, Bourcier R, Hostettler IC, Alg VS, van Eijk KR, Koido M, Akiyama M, Terao C, Matsuda K, Walters RG, Lin K, Li L, Millwood IY, Chen Z, Rouleau GA, Zhou S, Rannikmäe K, Sudlow CLM, Houlden H, van den Berg LH, Dina C, Naggara O, Gentric JC, Shotar E, Eugène F, Desal H, Winsvold BS, Børte S, Johnsen MB, Brumpton BM, Sandvei MS, Willer CJ, Hveem K, Zwart JA, Verschuren WMM, Friedrich CM, Hirsch S, Schilling S, Dauvillier J, Martin O, Jones GT, Bown MJ, Ko NU, Kim H, Coleman JRI, Breen G, Zaroff JG, Klijn CJM, Malik R, Dichgans M, Sargurupremraj M, Tatlisumak T, Amouyel P, Debette S, Rinkel GJE, Worrall BB, Pera J, Slowik A, Gaál-Paavola EI, Niemelä M, Jääskeläinen JE, von Und Zu Fraunberg M, Lindgren A, Broderick JP, Werring DJ, Woo D, Redon R, Bijlenga P, Kamatani Y, Veldink JH, Ruigrok YM. Genome-wide association study of intracranial aneurysms identifies 17 risk loci and genetic overlap with clinical risk factors. Nat Genet 2020; 52:1303-1313. [PMID: 33199917 PMCID: PMC7116530 DOI: 10.1038/s41588-020-00725-7] [Citation(s) in RCA: 140] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 09/24/2020] [Indexed: 01/16/2023]
Abstract
Rupture of an intracranial aneurysm leads to subarachnoid hemorrhage, a severe type of stroke. To discover new risk loci and the genetic architecture of intracranial aneurysms, we performed a cross-ancestry, genome-wide association study in 10,754 cases and 306,882 controls of European and East Asian ancestry. We discovered 17 risk loci, 11 of which are new. We reveal a polygenic architecture and explain over half of the disease heritability. We show a high genetic correlation between ruptured and unruptured intracranial aneurysms. We also find a suggestive role for endothelial cells by using gene mapping and heritability enrichment. Drug-target enrichment shows pleiotropy between intracranial aneurysms and antiepileptic and sex hormone drugs, providing insights into intracranial aneurysm pathophysiology. Finally, genetic risks for smoking and high blood pressure, the two main clinical risk factors, play important roles in intracranial aneurysm risk, and drive most of the genetic correlation between intracranial aneurysms and other cerebrovascular traits.
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Affiliation(s)
- Mark K Bakker
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands.
| | - Rick A A van der Spek
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands
| | - Wouter van Rheenen
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands
| | - Sandrine Morel
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Neurosurgery Division, Department of Clinical Neurosciences, Faculty of Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - Romain Bourcier
- l'institut du thorax Université de Nantes, CHU Nantes, INSERM, CNRS, Nantes, France
- CHU Nantes, Department of Neuroradiology, Nantes, France
| | - Isabel C Hostettler
- Stroke Research Centre, University College London Queen Square Institute of Neurology, London, UK
- Department of Neurosurgery, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Varinder S Alg
- Stroke Research Centre, University College London Queen Square Institute of Neurology, London, UK
| | - Kristel R van Eijk
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands
| | - Masaru Koido
- Laboratory for Statistical and Translational Genetics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- Department of Cancer Biology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Masato Akiyama
- Laboratory for Statistical and Translational Genetics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Department of Ocular Pathology and Imaging Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Chikashi Terao
- Laboratory for Statistical and Translational Genetics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Koichi Matsuda
- Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
- Laboratory of Clinical Genome Sequencing, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Robin G Walters
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
- Medical Research Council Population Health Research Unit, University of Oxford, Oxford, UK
| | - Kuang Lin
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Liming Li
- Department of Epidemiology, School of Public Health, Peking University Health Science Center, Beijing, China
| | - Iona Y Millwood
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
- Medical Research Council Population Health Research Unit, University of Oxford, Oxford, UK
| | - Zhengming Chen
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
- Medical Research Council Population Health Research Unit, University of Oxford, Oxford, UK
| | - Guy A Rouleau
- Montréal Neurological Institute and Hospital, McGill University, Montréal, QC, Canada
| | - Sirui Zhou
- Lady Davis Institute, Jewish General Hospital, McGill University, Montréal, QC, Canada
| | - Kristiina Rannikmäe
- Centre for Medical Informatics, Usher Institute, University of Edinburgh, Edinburgh, UK
| | - Cathie L M Sudlow
- Centre for Medical Informatics, Usher Institute, University of Edinburgh, Edinburgh, UK
- UK Biobank, Cheadle, Stockport, UK
| | - Henry Houlden
- Neurogenetics Laboratory, The National Hospital of Neurology and Neurosurgery, London, UK
| | - Leonard H van den Berg
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands
| | - Christian Dina
- l'institut du thorax Université de Nantes, CHU Nantes, INSERM, CNRS, Nantes, France
| | - Olivier Naggara
- Pediatric Radiology, Necker Hospital for Sick Children, Université Paris Descartes, Paris, France
- Department of Neuroradiology, Sainte-Anne Hospital and Université Paris Descartes, INSERM UMR, S894, Paris, France
| | | | - Eimad Shotar
- Department of Neuroradiology, Pitié-Salpêtrière Hospital, Paris, France
| | - François Eugène
- Department of Neuroradiology, University Hospital of Rennes, Rennes, France
| | - Hubert Desal
- l'institut du thorax Université de Nantes, CHU Nantes, INSERM, CNRS, Nantes, France
- CHU Nantes, Department of Neuroradiology, Nantes, France
| | - Bendik S Winsvold
- Department of Research, Innovation and Education, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway
- K. G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Sigrid Børte
- K. G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- Research and Communication Unit for Musculoskeletal Health (FORMI), Department of Research, Innovation and Education, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Marianne Bakke Johnsen
- K. G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- Research and Communication Unit for Musculoskeletal Health (FORMI), Department of Research, Innovation and Education, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Ben M Brumpton
- K. G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Marie Søfteland Sandvei
- Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- The Cancer Clinic, St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Cristen J Willer
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Kristian Hveem
- K. G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- HUNT Research Center, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - John-Anker Zwart
- Department of Research, Innovation and Education, Division of Clinical Neuroscience, Oslo University Hospital, Oslo, Norway
- K. G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - W M Monique Verschuren
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, the Netherlands
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Christoph M Friedrich
- Dortmund University of Applied Science and Arts, Dortmund, Germany
- Institute for Medical Informatics, Biometry and Epidemiology (IMIBE), University Hospital Essen, Essen, Germany
| | - Sven Hirsch
- Zurich University of Applied Sciences, School of Life Sciences and Facility Management, Zurich, Switzerland
| | - Sabine Schilling
- Zurich University of Applied Sciences, School of Life Sciences and Facility Management, Zurich, Switzerland
| | | | - Olivier Martin
- SIB Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | | | | | | | | | | | | | | | - Gregory T Jones
- Department of Surgery, University of Otago, Dunedin, New Zealand
| | - Matthew J Bown
- Department of Cardiovascular Sciences and National Institute for Health Research, University of Leicester, Leicester, UK
- Leicester Biomedical Research Centre, University of Leicester, Glenfield Hospital, Leicester, UK
| | - Nerissa U Ko
- Department of Neurology, University of California at San Francisco, San Francisco, CA, USA
| | - Helen Kim
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, CA, USA
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
- Institute for Human Genetics, University of California, San Francisco, CA, USA
| | - Jonathan R I Coleman
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- UK National Institute for Health Research (NIHR) Biomedical Research Centre (BRC), South London and Maudsley NHS Foundation Trust, London, UK
| | - Gerome Breen
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- UK National Institute for Health Research (NIHR) Biomedical Research Centre (BRC), South London and Maudsley NHS Foundation Trust, London, UK
| | - Jonathan G Zaroff
- Division of Research, Kaiser Permanente of Northern California, Oakland, CA, USA
| | - Catharina J M Klijn
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Rainer Malik
- Institute for Stroke and Dementia Research, University Hospital, Ludwig-Maximilians-University, Munich, Germany
| | - Martin Dichgans
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Munich, Germany
| | - Muralidharan Sargurupremraj
- INSERM U1219 Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France
- Department of Neurology, Institute for Neurodegenerative Disease, Bordeaux University Hospital, Bordeaux, France
| | - Turgut Tatlisumak
- Department of Clinical Neuroscience at Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
| | - Philippe Amouyel
- Institut Pasteur de Lille, UMR1167 LabEx DISTALZ - RID-AGE Université de Lille, INSERM, Centre Hospitalier Université de Lille Lille, Lille Lille, France
| | - Stéphanie Debette
- INSERM U1219 Bordeaux Population Health Research Center, University of Bordeaux, Bordeaux, France
- Department of Neurology, Institute for Neurodegenerative Disease, Bordeaux University Hospital, Bordeaux, France
| | - Gabriel J E Rinkel
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands
| | - Bradford B Worrall
- Departments of Neurology and Public Health Sciences, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Joanna Pera
- Department of Neurology, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - Agnieszka Slowik
- Department of Neurology, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - Emília I Gaál-Paavola
- Department of Neurosurgery, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
- Clinical Neurosciences, University of Helsinki, Helsinki, Finland
| | - Mika Niemelä
- Department of Neurosurgery, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Juha E Jääskeläinen
- Neurosurgery NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Institute of Clinical Medicine, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Mikael von Und Zu Fraunberg
- Neurosurgery NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Institute of Clinical Medicine, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Antti Lindgren
- Neurosurgery NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Institute of Clinical Medicine, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | | | - David J Werring
- Stroke Research Centre, University College London Queen Square Institute of Neurology, London, UK
| | - Daniel Woo
- University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Richard Redon
- l'institut du thorax Université de Nantes, CHU Nantes, INSERM, CNRS, Nantes, France
| | - Philippe Bijlenga
- Neurosurgery Division, Department of Clinical Neurosciences, Faculty of Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - Yoichiro Kamatani
- Laboratory for Statistical and Translational Genetics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
- Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Jan H Veldink
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands
| | - Ynte M Ruigrok
- Department of Neurology and Neurosurgery, University Medical Center Utrecht Brain Center, Utrecht University, Utrecht, the Netherlands.
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12
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Sundström J, Söderholm M, Söderberg S, Alfredsson L, Andersson M, Bellocco R, Björck M, Broberg P, Eriksson M, Eriksson M, Forsberg B, Fransson EI, Giedraitis V, Theorell-Haglöw J, Hallqvist J, Hansson PO, Heller S, Håkansson N, Ingelsson M, Janson C, Järvholm B, Khalili P, Knutsson A, Lager A, Lagerros YT, Larsson SC, Leander K, Leppert J, Lind L, Lindberg E, Magnusson C, Magnusson PKE, Malfert M, Michaëlsson K, Nilsson P, Olsson H, Pedersen NL, Pennlert J, Rosenblad A, Rosengren A, Torén K, Wanhainen A, Wolk A, Engström G, Svennblad B, Wiberg B. Risk factors for subarachnoid haemorrhage: a nationwide cohort of 950 000 adults. Int J Epidemiol 2020; 48:2018-2025. [PMID: 31363756 DOI: 10.1093/ije/dyz163] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/11/2019] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Subarachnoid haemorrhage (SAH) is a devastating disease, with high mortality rate and substantial disability among survivors. Its causes are poorly understood. We aimed to investigate risk factors for SAH using a novel nationwide cohort consortium. METHODS We obtained individual participant data of 949 683 persons (330 334 women) between 25 and 90 years old, with no history of SAH at baseline, from 21 population-based cohorts. Outcomes were obtained from the Swedish Patient and Causes of Death Registries. RESULTS During 13 704 959 person-years of follow-up, 2659 cases of first-ever fatal or non-fatal SAH occurred, with an age-standardized incidence rate of 9.0 [95% confidence interval (CI) (7.4-10.6)/100 000 person-years] in men and 13.8 [(11.4-16.2)/100 000 person-years] in women. The incidence rate increased exponentially with higher age. In multivariable-adjusted Poisson models, marked sex interactions for current smoking and body mass index (BMI) were observed. Current smoking conferred a rate ratio (RR) of 2.24 (95% CI 1.95-2.57) in women and 1.62 (1.47-1.79) in men. One standard deviation higher BMI was associated with an RR of 0.86 (0.81-0.92) in women and 1.02 (0.96-1.08) in men. Higher blood pressure and lower education level were also associated with higher risk of SAH. CONCLUSIONS The risk of SAH is 45% higher in women than in men, with substantial sex differences in risk factor strengths. In particular, a markedly stronger adverse effect of smoking in women may motivate targeted public health initiatives.
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Affiliation(s)
- Johan Sundström
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden.,George Institute for Global Health, University of New South Wales, Sydney, NSW, Australia
| | | | - Stefan Söderberg
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Lars Alfredsson
- Institute of Environmental Medicine, Cardiovascular Epidemiology, Karolinska Institutet, Stockholm, Sweden
| | - Martin Andersson
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Rino Bellocco
- Department of Statistics and Quantitative Methods, University of Milano-Biocca, Milan, Italy.,Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Martin Björck
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Per Broberg
- Department of Clinical Sciences, Cancer Epidemiology, Lund University, Lund, Sweden
| | - Maria Eriksson
- Department of Neurosurgery, Umeå University, Umeå, Sweden
| | - Marie Eriksson
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden.,Department of Statistics, Umeå University, Umeå, Sweden
| | - Bertil Forsberg
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Eleonor I Fransson
- Department of Natural Science and Biomedicine, School of Health and Welfare, Jönköping University, Jönköping, Sweden
| | - Vilmantas Giedraitis
- Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | | | - Johan Hallqvist
- Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - Per-Olof Hansson
- Department of Molecular and Clinical Medicine, Sahlgrenska Academy/ Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden
| | - Susanne Heller
- Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | - Niclas Håkansson
- Unit of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Martin Ingelsson
- Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - Christer Janson
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Bengt Järvholm
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Payam Khalili
- Department of Cardiology and Acute Internal Medicine, Central Hospital, Karlstad, Sweden
| | - Anders Knutsson
- Department of Health Sciences, Mid Sweden University, Ostersund, Sweden
| | - Anton Lager
- Centre for Epidemiology and Community Medicine, Stockholm County Council, Stockholm, Sweden.,Department of Public Health Sciences, Stockholm, Sweden
| | - Ylva Trolle Lagerros
- Clinical Epidemiology Unit, Department of Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Medicine, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Susanna C Larsson
- Unit of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Karin Leander
- Institute of Environmental Medicine, Cardiovascular Epidemiology, Karolinska Institutet, Stockholm, Sweden
| | - Jerzy Leppert
- Centre for Clinical Research Västerås, Västmanland Region, and Uppsala University, Västerås, Sweden
| | - Lars Lind
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Eva Lindberg
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Cecilia Magnusson
- Centre for Epidemiology and Community Medicine, Stockholm County Council, Stockholm, Sweden.,Department of Public Health Sciences, Stockholm, Sweden
| | - Patrik K E Magnusson
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Mauricio Malfert
- Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | - Karl Michaëlsson
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Peter Nilsson
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Håkan Olsson
- Department of Clinical Sciences, Cancer Epidemiology, Lund University, Lund, Sweden
| | - Nancy L Pedersen
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Johanna Pennlert
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Andreas Rosenblad
- Centre for Clinical Research Västerås, Västmanland Region, and Uppsala University, Västerås, Sweden
| | - Annika Rosengren
- Department of Molecular and Clinical Medicine, Sahlgrenska Academy/ Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden
| | - Kjell Torén
- Section of Occupational and Environmental Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Anders Wanhainen
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Alicja Wolk
- Unit of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Gunnar Engström
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Bodil Svennblad
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Bernice Wiberg
- Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
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13
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van 't Hof FNG, Lai D, van Setten J, Bots ML, Vaartjes I, Broderick J, Woo D, Foroud T, Rinkel GJE, de Bakker PIW, Ruigrok YM. Exome-chip association analysis of intracranial aneurysms. Neurology 2019; 94:e481-e488. [PMID: 31732565 DOI: 10.1212/wnl.0000000000008665] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 08/01/2019] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate to what extent low-frequency genetic variants (with minor allele frequencies <5%) affect the risk of intracranial aneurysms (IAs). METHODS One thousand fifty-six patients with IA and 2,097 population-based controls from the Netherlands were genotyped with the Illumina HumanExome BeadChip. After quality control (QC) of samples and single nucleotide variants (SNVs), we conducted a single variant analysis using the Fisher exact test. We also performed the variable threshold (VT) test and the sequence kernel association test (SKAT) at different minor allele count (MAC) thresholds of >5 and >0 to test the hypothesis that multiple variants within the same gene are associated with IA risk. Significant results were tested in a replication cohort of 425 patients with IA and 311 controls, and results of the 2 cohorts were combined in a meta-analysis. RESULTS After QC, 995 patients with IA and 2,080 controls remained for further analysis. The single variant analysis comprising 46,534 SNVs did not identify significant loci at the genome-wide level. The gene-based tests showed a statistically significant association for fibulin 2 (FBLN2) (best p = 1 × 10-6 for the VT test, MAC >5). Associations were not statistically significant in the independent but smaller replication cohort (p > 0.57) but became slightly stronger in a meta-analysis of the 2 cohorts (best p = 4.8 × 10-7 for the SKAT, MAC ≥1). CONCLUSION Gene-based tests indicated an association for FBLN2, a gene encoding an extracellular matrix protein implicated in vascular wall remodeling, but independent validation in larger cohorts is warranted. We did not identify any significant associations for single low-frequency genetic variants.
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Affiliation(s)
- Femke N G van 't Hof
- From the Department of Neurology and Neurosurgery (F.N.G.v.H., G.J.E.R., Y.M.R.), Brain Center Rudolf Magnus, Department of Cardiology (J.v.S.), Department of Medical Genetics (P.I.W.d.B.), Centre for Molecular Medicine, and Department of Epidemiology (M.L.B., I.V., P.I.W.d.B.), Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands; Department of Medical and Molecular Genetics (D.L., T.F.), Indiana University School of Medicine, Indianapolis; and Department of Neurology and Rehabilitation Medicine (J.B., D.W.), University of Cincinnati School of Medicine, OH.
| | - Dongbing Lai
- From the Department of Neurology and Neurosurgery (F.N.G.v.H., G.J.E.R., Y.M.R.), Brain Center Rudolf Magnus, Department of Cardiology (J.v.S.), Department of Medical Genetics (P.I.W.d.B.), Centre for Molecular Medicine, and Department of Epidemiology (M.L.B., I.V., P.I.W.d.B.), Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands; Department of Medical and Molecular Genetics (D.L., T.F.), Indiana University School of Medicine, Indianapolis; and Department of Neurology and Rehabilitation Medicine (J.B., D.W.), University of Cincinnati School of Medicine, OH
| | - Jessica van Setten
- From the Department of Neurology and Neurosurgery (F.N.G.v.H., G.J.E.R., Y.M.R.), Brain Center Rudolf Magnus, Department of Cardiology (J.v.S.), Department of Medical Genetics (P.I.W.d.B.), Centre for Molecular Medicine, and Department of Epidemiology (M.L.B., I.V., P.I.W.d.B.), Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands; Department of Medical and Molecular Genetics (D.L., T.F.), Indiana University School of Medicine, Indianapolis; and Department of Neurology and Rehabilitation Medicine (J.B., D.W.), University of Cincinnati School of Medicine, OH
| | - Michiel L Bots
- From the Department of Neurology and Neurosurgery (F.N.G.v.H., G.J.E.R., Y.M.R.), Brain Center Rudolf Magnus, Department of Cardiology (J.v.S.), Department of Medical Genetics (P.I.W.d.B.), Centre for Molecular Medicine, and Department of Epidemiology (M.L.B., I.V., P.I.W.d.B.), Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands; Department of Medical and Molecular Genetics (D.L., T.F.), Indiana University School of Medicine, Indianapolis; and Department of Neurology and Rehabilitation Medicine (J.B., D.W.), University of Cincinnati School of Medicine, OH
| | - Ilonca Vaartjes
- From the Department of Neurology and Neurosurgery (F.N.G.v.H., G.J.E.R., Y.M.R.), Brain Center Rudolf Magnus, Department of Cardiology (J.v.S.), Department of Medical Genetics (P.I.W.d.B.), Centre for Molecular Medicine, and Department of Epidemiology (M.L.B., I.V., P.I.W.d.B.), Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands; Department of Medical and Molecular Genetics (D.L., T.F.), Indiana University School of Medicine, Indianapolis; and Department of Neurology and Rehabilitation Medicine (J.B., D.W.), University of Cincinnati School of Medicine, OH
| | - Joseph Broderick
- From the Department of Neurology and Neurosurgery (F.N.G.v.H., G.J.E.R., Y.M.R.), Brain Center Rudolf Magnus, Department of Cardiology (J.v.S.), Department of Medical Genetics (P.I.W.d.B.), Centre for Molecular Medicine, and Department of Epidemiology (M.L.B., I.V., P.I.W.d.B.), Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands; Department of Medical and Molecular Genetics (D.L., T.F.), Indiana University School of Medicine, Indianapolis; and Department of Neurology and Rehabilitation Medicine (J.B., D.W.), University of Cincinnati School of Medicine, OH
| | - Daniel Woo
- From the Department of Neurology and Neurosurgery (F.N.G.v.H., G.J.E.R., Y.M.R.), Brain Center Rudolf Magnus, Department of Cardiology (J.v.S.), Department of Medical Genetics (P.I.W.d.B.), Centre for Molecular Medicine, and Department of Epidemiology (M.L.B., I.V., P.I.W.d.B.), Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands; Department of Medical and Molecular Genetics (D.L., T.F.), Indiana University School of Medicine, Indianapolis; and Department of Neurology and Rehabilitation Medicine (J.B., D.W.), University of Cincinnati School of Medicine, OH
| | - Tatiana Foroud
- From the Department of Neurology and Neurosurgery (F.N.G.v.H., G.J.E.R., Y.M.R.), Brain Center Rudolf Magnus, Department of Cardiology (J.v.S.), Department of Medical Genetics (P.I.W.d.B.), Centre for Molecular Medicine, and Department of Epidemiology (M.L.B., I.V., P.I.W.d.B.), Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands; Department of Medical and Molecular Genetics (D.L., T.F.), Indiana University School of Medicine, Indianapolis; and Department of Neurology and Rehabilitation Medicine (J.B., D.W.), University of Cincinnati School of Medicine, OH
| | - Gabriel J E Rinkel
- From the Department of Neurology and Neurosurgery (F.N.G.v.H., G.J.E.R., Y.M.R.), Brain Center Rudolf Magnus, Department of Cardiology (J.v.S.), Department of Medical Genetics (P.I.W.d.B.), Centre for Molecular Medicine, and Department of Epidemiology (M.L.B., I.V., P.I.W.d.B.), Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands; Department of Medical and Molecular Genetics (D.L., T.F.), Indiana University School of Medicine, Indianapolis; and Department of Neurology and Rehabilitation Medicine (J.B., D.W.), University of Cincinnati School of Medicine, OH
| | - Paul I W de Bakker
- From the Department of Neurology and Neurosurgery (F.N.G.v.H., G.J.E.R., Y.M.R.), Brain Center Rudolf Magnus, Department of Cardiology (J.v.S.), Department of Medical Genetics (P.I.W.d.B.), Centre for Molecular Medicine, and Department of Epidemiology (M.L.B., I.V., P.I.W.d.B.), Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands; Department of Medical and Molecular Genetics (D.L., T.F.), Indiana University School of Medicine, Indianapolis; and Department of Neurology and Rehabilitation Medicine (J.B., D.W.), University of Cincinnati School of Medicine, OH
| | - Ynte M Ruigrok
- From the Department of Neurology and Neurosurgery (F.N.G.v.H., G.J.E.R., Y.M.R.), Brain Center Rudolf Magnus, Department of Cardiology (J.v.S.), Department of Medical Genetics (P.I.W.d.B.), Centre for Molecular Medicine, and Department of Epidemiology (M.L.B., I.V., P.I.W.d.B.), Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, the Netherlands; Department of Medical and Molecular Genetics (D.L., T.F.), Indiana University School of Medicine, Indianapolis; and Department of Neurology and Rehabilitation Medicine (J.B., D.W.), University of Cincinnati School of Medicine, OH
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14
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Poppenberg KE, Jiang K, Tso MK, Snyder KV, Siddiqui AH, Kolega J, Jarvis JN, Meng H, Tutino VM. Epigenetic landscapes suggest that genetic risk for intracranial aneurysm operates on the endothelium. BMC Med Genomics 2019; 12:149. [PMID: 31666072 PMCID: PMC6821037 DOI: 10.1186/s12920-019-0591-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 09/23/2019] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Genetics play an important role in intracranial aneurysm (IA) pathophysiology. Genome-wide association studies have identified several single nucleotide polymorphisms (SNPs) that are linked to IA but how they affect disease pathobiology remains poorly understood. We used Encyclopedia of DNA Elements (ENCODE) data to investigate the epigenetic landscapes surrounding genetic risk loci to determine if IA-associated SNPs affect functional elements that regulate gene expression and if those SNPs are most likely to impact a specific type of cells. METHODS We mapped 16 highly significant IA-associated SNPs to linkage disequilibrium (LD) blocks within the human genome. Within these regions, we examined the presence of H3K4me1 and H3K27ac histone marks and CCCTC-binding factor (CTCF) and transcription-factor binding sites using chromatin immunoprecipitation-sequencing (ChIP-Seq) data. This analysis was conducted in several cell types relevant to endothelial (human umbilical vein endothelial cells [HUVECs]) and inflammatory (monocytes, neutrophils, and peripheral blood mononuclear cells [PBMCs]) biology. Gene ontology analysis was performed on genes within extended IA-risk regions to understand which biological processes could be affected by IA-risk SNPs. We also evaluated recently published data that showed differential methylation and differential ribonucleic acid (RNA) expression in IA to investigate the correlation between differentially regulated elements and the IA-risk LD blocks. RESULTS The IA-associated LD blocks were statistically significantly enriched for H3K4me1 and/or H3K27ac marks (markers of enhancer function) in endothelial cells but not in immune cells. The IA-associated LD blocks also contained more binding sites for CTCF in endothelial cells than monocytes, although not statistically significant. Differentially methylated regions of DNA identified in IA tissue were also present in several IA-risk LD blocks, suggesting SNPs could affect this epigenetic machinery. Gene ontology analysis supports that genes affected by IA-risk SNPs are associated with extracellular matrix reorganization and endopeptidase activity. CONCLUSION These findings suggest that known genetic alterations linked to IA risk act on endothelial cell function. These alterations do not correlate with IA-associated gene expression signatures of circulating blood cells, which suggests that such signatures are a secondary response reflecting the presence of IA rather than indicating risk for IA.
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Affiliation(s)
- Kerry E Poppenberg
- Clinical and Translational Research Center, Canon Stroke and Vascular Research Center, 875 Ellicott Street, 14203, Buffalo, NY, USA.,Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, USA
| | - Kaiyu Jiang
- Genetics, Genomics, and Bioinformatics Program, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Michael K Tso
- Clinical and Translational Research Center, Canon Stroke and Vascular Research Center, 875 Ellicott Street, 14203, Buffalo, NY, USA.,Department of Neurosurgery, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Kenneth V Snyder
- Clinical and Translational Research Center, Canon Stroke and Vascular Research Center, 875 Ellicott Street, 14203, Buffalo, NY, USA.,Department of Neurosurgery, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA.,Department of Radiology, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Adnan H Siddiqui
- Clinical and Translational Research Center, Canon Stroke and Vascular Research Center, 875 Ellicott Street, 14203, Buffalo, NY, USA.,Department of Neurosurgery, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA.,Department of Radiology, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
| | - John Kolega
- Clinical and Translational Research Center, Canon Stroke and Vascular Research Center, 875 Ellicott Street, 14203, Buffalo, NY, USA.,Department of Pathology and Anatomical Sciences, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
| | - James N Jarvis
- Genetics, Genomics, and Bioinformatics Program, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA.,Department of Pediatrics, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA
| | - Hui Meng
- Clinical and Translational Research Center, Canon Stroke and Vascular Research Center, 875 Ellicott Street, 14203, Buffalo, NY, USA.,Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, USA.,Department of Neurosurgery, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA.,Department of Mechanical & Aerospace Engineering, University at Buffalo, Buffalo, NY, USA
| | - Vincent M Tutino
- Clinical and Translational Research Center, Canon Stroke and Vascular Research Center, 875 Ellicott Street, 14203, Buffalo, NY, USA. .,Department of Neurosurgery, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA. .,Department of Pathology and Anatomical Sciences, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY, USA.
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15
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Samuel N, Radovanovic I. Genetic basis of intracranial aneurysm formation and rupture: clinical implications in the postgenomic era. Neurosurg Focus 2019; 47:E10. [DOI: 10.3171/2019.4.focus19204] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 04/24/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVEDespite the prevalence and impact of intracranial aneurysms (IAs), the molecular basis of their pathogenesis remains largely unknown. Moreover, there is a dearth of clinically validated biomarkers to efficiently screen patients with IAs and prognosticate risk for rupture. The aim of this study was to survey the literature to systematically identify the spectrum of genetic aberrations that have been identified in IA formation and risk of rupture.METHODSA literature search was performed using the Medical Subject Headings (MeSH) system of databases including PubMed, EMBASE, and Google Scholar. Relevant studies that reported on genetic analyses of IAs, rupture risk, and long-term outcomes were included in the qualitative analysis.RESULTSA total of 114 studies were reviewed and 65 were included in the qualitative synthesis. There are several well-established mendelian syndromes that confer risk to IAs, with variable frequency. Linkage analyses, genome-wide association studies, candidate gene studies, and exome sequencing identify several recurrent polymorphic variants at candidate loci, and genes associated with the risk of aneurysm formation and rupture, including ANRIL (CDKN2B-AS1, 9p21), ARGHEF17 (11q13), ELN (7q11), SERPINA3 (14q32), and SOX17 (8q11). In addition, polymorphisms in eNOS/NOS3 (7q36) may serve as predictive markers for outcomes following intracranial aneurysm rupture. Genetic aberrations identified to date converge on posited molecular mechanisms involved in vascular remodeling, with strong implications for an associated immune-mediated inflammatory response.CONCLUSIONSComprehensive studies of IA formation and rupture have identified candidate risk variants and loci; however, further genome-wide analyses are needed to identify high-confidence genetic aberrations. The literature supports a role for several risk loci in aneurysm formation and rupture with putative candidate genes. A thorough understanding of the genetic basis governing risk of IA development and the resultant aneurysmal subarachnoid hemorrhage may aid in screening, clinical management, and risk stratification of these patients, and it may also enable identification of putative mechanisms for future drug development.
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Affiliation(s)
- Nardin Samuel
- 1Division of Neurosurgery, Department of Surgery, University of Toronto; and
| | - Ivan Radovanovic
- 1Division of Neurosurgery, Department of Surgery, University of Toronto; and
- 2Division of Neurosurgery, Toronto Western Hospital, University Health Network, Toronto, Ontario, Canada
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16
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Paavola JT, Väntti N, Junkkari A, Huttunen TJ, von und zu Fraunberg M, Koivisto T, Kämäräinen OP, Lång M, Meretoja A, Räikkönen K, Viinamäki H, Jääskeläinen JE, Huttunen J, Lindgren AE. Antipsychotic Use Among 1144 Patients After Aneurysmal Subarachnoid Hemorrhage. Stroke 2019; 50:1711-1718. [DOI: 10.1161/strokeaha.119.024914] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background and Purpose—
At acute phase and neurointensive care, patients with aneurysmal subarachnoid hemorrhage (aSAH) may become agitated or delirious. We found no previous studies on psychotic disorders or antipsychotic drug (APD) use by long-term aSAH survivors. We defined the APD use and its risk factors among 12-month survivors of aSAH in an Eastern Finnish population–based cohort with long-term follow-up.
Methods—
We analyzed APD use in 1144 consecutive patients with aSAH alive at 12 months of the Kuopio intracranial aneurysm patient and family database and their age, sex, and birth municipality matched controls (3:1; n=3432) from 1995 to 2013 and median follow-up of 9 years. Using the Finish nationwide health registries, we obtained drug purchase and hospital discharge data.
Results—
In total, 140 (12%) of the 1144 patients started APD use first time after aSAH (index date), in contrast to 145 (4%) of the 3432 matched population controls. The cumulative rate of starting APD was 6% at 1 year and 9% at 5 years, in contrast to 1% and 2% in the controls, respectively. The rates at 1 and 5 years were only 1% and 2% in the 489 patients with a good condition (modified Rankin Scale score, 0 or 1 at 12 months; no shunt, intracerebral hemorrhage, or intraventricular hemorrhage). Instead, the highest rate of APD use, 23% at 5 years was among the 192 patients shunted for hydrocephalus after aSAH. Eighty-eight (63%) of the 140 aSAH patients with APD use had also concomitant antidepressant or antiepileptic drug use.
Conclusions—
The 12-month survivors of aSAH were significantly more likely to be started on APD after aSAH than their matched population controls. These patients often used antidepressant and antiepileptic drugs concomitantly. The use of APDs strongly correlated with signs of brain injury after aSAH, with low use if no signs of significant brain injury were present.
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Affiliation(s)
- Juho T. Paavola
- From the Neurosurgery of NeuroCenter (J.T.P., N.V., A.J., T.J.H., M.v.u.z.F., T.K., O.-P.K., J.E.J., J.H., A.E.L.), Kuopio University Hospital and Institute of Clinical Medicine, Finland
- School of Medicine (J.T.P., N.V., O.-P.K., H.V., J.E.J., J.H.), University of Eastern Finland, Kuopio
| | - Nelli Väntti
- From the Neurosurgery of NeuroCenter (J.T.P., N.V., A.J., T.J.H., M.v.u.z.F., T.K., O.-P.K., J.E.J., J.H., A.E.L.), Kuopio University Hospital and Institute of Clinical Medicine, Finland
- School of Medicine (J.T.P., N.V., O.-P.K., H.V., J.E.J., J.H.), University of Eastern Finland, Kuopio
| | - Antti Junkkari
- From the Neurosurgery of NeuroCenter (J.T.P., N.V., A.J., T.J.H., M.v.u.z.F., T.K., O.-P.K., J.E.J., J.H., A.E.L.), Kuopio University Hospital and Institute of Clinical Medicine, Finland
| | - Terhi J. Huttunen
- From the Neurosurgery of NeuroCenter (J.T.P., N.V., A.J., T.J.H., M.v.u.z.F., T.K., O.-P.K., J.E.J., J.H., A.E.L.), Kuopio University Hospital and Institute of Clinical Medicine, Finland
| | - Mikael von und zu Fraunberg
- From the Neurosurgery of NeuroCenter (J.T.P., N.V., A.J., T.J.H., M.v.u.z.F., T.K., O.-P.K., J.E.J., J.H., A.E.L.), Kuopio University Hospital and Institute of Clinical Medicine, Finland
| | - Timo Koivisto
- From the Neurosurgery of NeuroCenter (J.T.P., N.V., A.J., T.J.H., M.v.u.z.F., T.K., O.-P.K., J.E.J., J.H., A.E.L.), Kuopio University Hospital and Institute of Clinical Medicine, Finland
| | - Olli-Pekka Kämäräinen
- From the Neurosurgery of NeuroCenter (J.T.P., N.V., A.J., T.J.H., M.v.u.z.F., T.K., O.-P.K., J.E.J., J.H., A.E.L.), Kuopio University Hospital and Institute of Clinical Medicine, Finland
- School of Medicine (J.T.P., N.V., O.-P.K., H.V., J.E.J., J.H.), University of Eastern Finland, Kuopio
| | - Maarit Lång
- Neurointensive Care, Institute of Clinical Medicine (M.L.), University of Eastern Finland, Kuopio
| | - Atte Meretoja
- Department of Neurology, Helsinki University Hospital, Finland (A.M.)
- Department of Medicine at the Royal Melbourne Hospital, University of Melbourne, Parkville, Australia (A.M.)
| | - Katri Räikkönen
- Department of Psychology and Logopedics, University of Helsinki, Finland (K.R.)
| | - Heimo Viinamäki
- Psychiatry (H.V.), Kuopio University Hospital and Institute of Clinical Medicine, Finland
- School of Medicine (J.T.P., N.V., O.-P.K., H.V., J.E.J., J.H.), University of Eastern Finland, Kuopio
| | - Juha E. Jääskeläinen
- From the Neurosurgery of NeuroCenter (J.T.P., N.V., A.J., T.J.H., M.v.u.z.F., T.K., O.-P.K., J.E.J., J.H., A.E.L.), Kuopio University Hospital and Institute of Clinical Medicine, Finland
- School of Medicine (J.T.P., N.V., O.-P.K., H.V., J.E.J., J.H.), University of Eastern Finland, Kuopio
| | - Jukka Huttunen
- From the Neurosurgery of NeuroCenter (J.T.P., N.V., A.J., T.J.H., M.v.u.z.F., T.K., O.-P.K., J.E.J., J.H., A.E.L.), Kuopio University Hospital and Institute of Clinical Medicine, Finland
- School of Medicine (J.T.P., N.V., O.-P.K., H.V., J.E.J., J.H.), University of Eastern Finland, Kuopio
| | - Antti E. Lindgren
- From the Neurosurgery of NeuroCenter (J.T.P., N.V., A.J., T.J.H., M.v.u.z.F., T.K., O.-P.K., J.E.J., J.H., A.E.L.), Kuopio University Hospital and Institute of Clinical Medicine, Finland
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17
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Li B, Hu C, Liu J, Liao X, Xun J, Xiao M, Yan J. Associations among Genetic Variants and Intracranial Aneurysm in a Chinese Population. Yonsei Med J 2019; 60:651-658. [PMID: 31250579 PMCID: PMC6597466 DOI: 10.3349/ymj.2019.60.7.651] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 04/02/2019] [Accepted: 04/24/2019] [Indexed: 12/20/2022] Open
Abstract
PURPOSE Genome-wide association studies (GWAS) have revealed that common variants on or near EDNRA, HDAC9, SOX17, RP1, CDKN2B-AS1, and RBBP8 genes are associated with intracranial aneurysm (IA) in European or Japanese populations. However, due to population heterogeneity, whether these loci are associated with IA pathogenesis in Chinese individuals is still unknown. The purpose of this study was to investigate associations among GWAS-identified loci and risk of IA in a Chinese population. MATERIALS AND METHODS A total of 765 individuals (including 230 IA patients and 535 controls) were involved in this study. Twelve single nucleotide polymorphisms (SNPs) of candidate loci were genotyped using the Sequenom MassARRAY platform. Associations were analyzed using univariate or multivariate logistic regression analysis. RESULTS SNPs in CDKN2B-AS1 (especially rs10757272) showed significant associations with IA in dominant and additive models [odds ratio (OR), 2.99 and 1.43; 95% confidence interval (CI), 1.44-6.24 and 1.10-1.86, respectively]. A SNP near HDAC9 (rs10230207) was associated with IA in the dominant model (OR, 1.42; 95% CI, 1.01-1.99). One SNP near RP1 (rs1072737) showed a protective effect on IA in the dominant model (OR, 0.66; 95% CI, 0.46-0.95), while another SNP in RP1 (rs9298506) showed a risk effect on IA in a recessive model (OR, 3.82; 95% CI, 1.84-7.91). No associations were observed among common variants near EDNRA, SOX17, or RBBP8 and IA. CONCLUSION These data partially confirmed earlier results and showed that variants in CDKN2B-AS1, RP1, and HDAC9 could be genetic susceptibility factors for IA in a Chinese population.
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Affiliation(s)
- Bingyang Li
- Department of Epidemiology and Health Statistics, XiangYa School of Public Health, Central South University, Hunan, China
| | - Chongyu Hu
- Department of Neurology, Hunan People's Hospital, Changsha, China
| | - Junyu Liu
- Department of Neurosurgery, XiangYa Hospital, Central South University, Changsha, Hunan, China
| | - Xin Liao
- Department of Epidemiology and Health Statistics, XiangYa School of Public Health, Central South University, Hunan, China
| | - Jiayu Xun
- Department of Epidemiology and Health Statistics, XiangYa School of Public Health, Central South University, Hunan, China
| | - Manqian Xiao
- Department of Epidemiology and Health Statistics, XiangYa School of Public Health, Central South University, Hunan, China
| | - Junxia Yan
- Department of Epidemiology and Health Statistics, XiangYa School of Public Health, Central South University, Hunan, China.
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18
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Genome-Wide Association between the 2q33.1 Locus and Intracranial Aneurysm Susceptibility: An Updated Meta-Analysis Including 18,019 Individuals. J Clin Med 2019; 8:jcm8050692. [PMID: 31100866 PMCID: PMC6572517 DOI: 10.3390/jcm8050692] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/02/2019] [Accepted: 05/15/2019] [Indexed: 11/17/2022] Open
Abstract
Previous genome-wide association studies did not show a consistent association between the BOLL gene (rs700651, 2q33.1) and intracranial aneurysm (IA) susceptibility. We aimed to perform an updated meta-analysis for the potential IA-susceptibility locus in large-scale multi-ethnic populations. We conducted a systematic review of studies identified by an electronic search from January 1990 to March 2019. The overall estimates of the "G" allele of rs700651, indicating IA susceptibility, were calculated under the fixed- and random-effect models using the inverse-variance method. Subsequent in silico function and cis-expression quantitative trait loci (cis-eQTL) analyses were performed to evaluate biological functions and genotype-specific expressions in human tissues. We included 4513 IA patients and 13,506 controls from five studies with seven independent populations: three European-ancestry, three Japanese, and one Korean population. The overall result showed a genome-wide significance threshold between rs700651 and IA susceptibility after controlling for study heterogeneity (OR = 1.213, 95% CI: 1.135-1.296). Subsequent cis-eQTL analysis showed significant genome-wide expressions in three human tissues, i.e., testis (p = 8.04 × 10-15 for ANKRD44), tibial nerves (p = 3.18 × 10-10 for SF3B1), and thyroid glands (p = 4.61 × 10-9 for SF3B1). The rs700651 common variant of the 2q33.1 region may be involved in genetic mechanisms that increase the risk of IA and may play crucial roles in regulatory functions.
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19
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Intracranial Aneurysms: Pathology, Genetics, and Molecular Mechanisms. Neuromolecular Med 2019; 21:325-343. [PMID: 31055715 DOI: 10.1007/s12017-019-08537-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 04/08/2019] [Indexed: 12/14/2022]
Abstract
Intracranial aneurysms (IA) are local dilatations in cerebral arteries that predominantly affect the circle of Willis. Occurring in approximately 2-5% of adults, these weakened areas are susceptible to rupture, leading to subarachnoid hemorrhage (SAH), a type of hemorrhagic stroke. Due to its early age of onset and poor prognosis, SAH accounts for > 25% of years lost for all stroke victims under the age of 65. In this review, we describe the cerebrovascular pathology associated with intracranial aneurysms. To understand IA genetics, we summarize syndromes with elevated incidence, genome-wide association studies (GWAS), whole exome studies on IA-affected families, and recent research that established definitive roles for Thsd1 (Thrombospondin Type 1 Domain Containing Protein 1) and Sox17 (SRY-box 17) in IA using genetically engineered mouse models. Lastly, we discuss the underlying molecular mechanisms of IA, including defects in vascular endothelial and smooth muscle cells caused by dysfunction in mechanotransduction, Thsd1/FAK (Focal Adhesion Kinase) signaling, and the Transforming Growth Factor β (TGF-β) pathway. As illustrated by THSD1 research, cell adhesion may play a significant role in IA.
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20
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Tarkkala H, Tupasela A. Shortcut to success? Negotiating genetic uniqueness in global biomedicine. SOCIAL STUDIES OF SCIENCE 2018; 48:740-761. [PMID: 30230417 DOI: 10.1177/0306312718801165] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Since the sequencing of the human genome, as well as the completion of the first Human Genome Diversity Project, the benefits of studying one human population over another has been an ongoing debate relating to the replicability of findings in other populations. The leveraging of specific populations into research markets has made headlines in cases such as deCode in Iceland, Quebec Founder Population, and Generation Scotland. In such cases, researchers and policy makers have used the genetic and historical uniqueness of their populations to attract scientific, commercial and political interest. In this article, we explore how in countries with population isolates, such as Finland, the researchers balance considerations relating to the generalization and replicability of findings in small yet unique research populations to global biomedical research interests. This highlights challenges related to forms of competition associated with genetics research markets, as well as what counts as the 'right' population for genetic research.
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Affiliation(s)
- Heta Tarkkala
- Department of Social Sciences, University of Eastern Finland, Joensuu, Finland; Faculty of Social Sciences, University of Helsinki, Helsinki, Finland
| | - Aaro Tupasela
- Section for Health Services Research, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
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21
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Starke RM, McCarthy DJ, Komotar RJ, Connolly ES. New Risk Allele for Intracranial Aneurysm in French-Canadians. Neurosurgery 2018; 83:E101-E102. [PMID: 30125025 DOI: 10.1093/neuros/nyy294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Robert M Starke
- Department of Neurosurgery University of Miami School of Medicine Miami, Florida
| | - David J McCarthy
- Department of Neurosurgery University of Miami School of Medicine Miami, Florida
| | - Ricardo J Komotar
- Department of Neurosurgery University of Miami School of Medicine Miami, Florida
| | - E Sander Connolly
- Department of Neurological Surgery Columbia University College of Physicians and Surgeons New York, New York
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22
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Fogel BL. Genetic and genomic testing for neurologic disease in clinical practice. HANDBOOK OF CLINICAL NEUROLOGY 2018; 147:11-22. [PMID: 29325607 DOI: 10.1016/b978-0-444-63233-3.00002-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
The influence of genetics on neurologic disease is broad and it is becoming more common that clinicians are presented with a patient whose disease is likely of genetic origin. In the search for mutations causing Mendelian disorders, advances in genetic testing methodology have propelled modern neurologic practice beyond single-gene testing into the realm of genomic medicine, where routine evaluations encompass hundreds or thousands of genes, or even the entire exome, representing all protein-coding genes in the genome. The role of various single-gene, multigene, and genomic testing methods, including chromosomal microarray and next-generation sequencing, in the evaluation of neurologic disease is discussed here to provide a framework for their use in a modern neurologic practice. Understanding the inherent issues that arise during the interpretation of sequence variants as pathogenic or benign and the potential discovery of incidental medically relevant findings are important considerations for neurologists utilizing these tests clinically. Strategies for the evaluation of clinically heterogeneous disorders are presented to guide neurologists in the transition from single-gene to genomic considerations and toward the prospect of the widespread routine use of exome sequencing in the continuing goal to achieve more rapid and more precise diagnoses that will improve management and outcome in patients challenged by neurologic disease.
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Affiliation(s)
- Brent L Fogel
- Program in Neurogenetics, Departments of Neurology and Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA, United States.
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23
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He L, Pierce RW, Min W. Rare and Low-Frequency Variant of ARHGEF17 Is Associated With Intracranial Aneurysms. CIRCULATION. GENOMIC AND PRECISION MEDICINE 2018; 11:e002248. [PMID: 29997229 PMCID: PMC6082391 DOI: 10.1161/circgen.118.002248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Li He
- Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China (L.H., W.M.)
| | - Richard W Pierce
- The Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT (R.W.P., W.M.)
| | - Wang Min
- Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China (L.H., W.M.).
- The Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, CT (R.W.P., W.M.)
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24
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Yang X, Li J, Fang Y, Zhang Z, Jin D, Chen X, Zhao Y, Li M, Huan L, Kent TA, Dong JF, Jiang R, Yang S, Jin L, Zhang J, Zhong TP, Yu F. Rho Guanine Nucleotide Exchange Factor ARHGEF17 Is a Risk Gene for Intracranial Aneurysms. CIRCULATION. GENOMIC AND PRECISION MEDICINE 2018; 11:e002099. [PMID: 29997225 PMCID: PMC6141028 DOI: 10.1161/circgen.117.002099] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 05/22/2018] [Indexed: 11/16/2022]
Abstract
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.
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Affiliation(s)
- Xinyu Yang
- Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, China (X.Y., Z.Z., Y.Z., M.L., L.H., R.J., S.Y., J.Z., F.Y.)
| | - Jiani Li
- Human Genome Sequencing Center, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX (J.L., F.Y.)
| | - Yabo Fang
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhong Shan Hospital, Fudan University, Shanghai, China (Y.F., D.J., X.C., L.J., T.P.Z.)
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, East China Normal University School of Life Sciences (Y.F., D.J., L.J., T.P.Z.)
| | - Zhen Zhang
- Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, China (X.Y., Z.Z., Y.Z., M.L., L.H., R.J., S.Y., J.Z., F.Y.)
| | - Daqing Jin
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhong Shan Hospital, Fudan University, Shanghai, China (Y.F., D.J., X.C., L.J., T.P.Z.)
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, East China Normal University School of Life Sciences (Y.F., D.J., L.J., T.P.Z.)
| | - Xingdong Chen
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhong Shan Hospital, Fudan University, Shanghai, China (Y.F., D.J., X.C., L.J., T.P.Z.)
| | - Yan Zhao
- Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, China (X.Y., Z.Z., Y.Z., M.L., L.H., R.J., S.Y., J.Z., F.Y.)
| | - Mengqi Li
- Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, China (X.Y., Z.Z., Y.Z., M.L., L.H., R.J., S.Y., J.Z., F.Y.)
| | - Linchun Huan
- Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, China (X.Y., Z.Z., Y.Z., M.L., L.H., R.J., S.Y., J.Z., F.Y.)
- Department of Neurosurgery, Linyi People's Hospital, Shandong, China (L.H.)
| | - Thomas A Kent
- Engineering Medicine, Texas A&M Health Science Center and College of Engineering, Houston (T.A.K.)
| | - Jing-Fei Dong
- Blood Works Northwest Research Institute, Seattle, WA (J.-F.D.)
- Division of Hematology, Department of Medicine, University of Washington School of Medicine, Seattle (J.-F.D.)
| | - Rongcai Jiang
- Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, China (X.Y., Z.Z., Y.Z., M.L., L.H., R.J., S.Y., J.Z., F.Y.)
| | - Shuyuan Yang
- Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, China (X.Y., Z.Z., Y.Z., M.L., L.H., R.J., S.Y., J.Z., F.Y.)
| | - Li Jin
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhong Shan Hospital, Fudan University, Shanghai, China (Y.F., D.J., X.C., L.J., T.P.Z.)
| | - Jianning Zhang
- Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, China (X.Y., Z.Z., Y.Z., M.L., L.H., R.J., S.Y., J.Z., F.Y.).
| | - Tao P Zhong
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhong Shan Hospital, Fudan University, Shanghai, China (Y.F., D.J., X.C., L.J., T.P.Z.).
- Shanghai Key Laboratory of Regulatory Biology, Institute of Molecular Medicine, East China Normal University School of Life Sciences (Y.F., D.J., L.J., T.P.Z.)
| | - Fuli Yu
- Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, China (X.Y., Z.Z., Y.Z., M.L., L.H., R.J., S.Y., J.Z., F.Y.).
- Human Genome Sequencing Center, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX (J.L., F.Y.)
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Jiang P, Wu J, Chen X, Ning B, Liu Q, Li Z, Li M, Yang F, Cao Y, Wang R, Wang S. Quantitative proteomics analysis of differentially expressed proteins in ruptured and unruptured cerebral aneurysms by iTRAQ. J Proteomics 2018; 182:45-52. [PMID: 29729990 DOI: 10.1016/j.jprot.2018.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 04/01/2018] [Accepted: 05/02/2018] [Indexed: 02/07/2023]
Abstract
The underlying pathophysiological mechanisms involved in cerebral aneurysms rupture remain unclear. This study was performed to investigate the differentially expressed proteins between ruptured and unruptured aneurysms using quantitative proteomics. The aneurysmal walls of six ruptured aneurysms and six unruptured aneurysms were collected during the surgical operation. The isobaric tags for relative and absolute quantification (iTRAQ) were used to identify the differentially expressed proteins and western blotting was performed to validate the expression of the proteins of interest. Bioinformatics analysis of the differentially expressed proteins was also performed using the KEGG database and GO database. Between ruptured and unruptured aneurysms, 169 proteins were found differently expressed, including 74 up-regulated proteins and 95 down-regulated proteins with a fold change ≥ 2 and p value ≤ .05. KEGG pathway analysis revealed that phagosome, focal adhesion and ECM-receptor interaction were the most common pathways involved in aneurysm rupture. In addition, the differential expressions of ITGB3, CRABP1 and S100A9 were validated by western blotting. Through the iTRAQ method, we found that inflammatory responses and cell-matrix interactions may play a significant role in the rupture of cerebral aneurysms. These findings provide a basis for better understanding of pathophysiological mechanisms associated with aneurysm rupture. BIOLOGICAL SIGNIFICANCE Intracranial aneurysm is the leading cause of life-threating subarachnoid hemorrhage which can cause 45% patients die within 30 days and severe morbidity in long-term survivors. With a high prevalence ranging from 1% to 5% in general population, cerebral aneurysm has become a widespread health hazard over past decades. Though great advances have been achieved in the diagnosis and treatment of this disease, the underlying pathophysiological mechanisms of aneurysm rupture remains undetermined and a lot of uncertainty still exists surrounding the treatment of unruptured cerebral aneurysms. Clarifying the mechanism associated with aneurysm rupture is important for estimating the rupture risk, as well as the development of new treatment strategy. Some previous studies have analyzed the molecular differences between ruptured and unruptured IAs at gene and mRNA levels, but further comprehensive proteomic studies are relatively rare. Here we performed a comparative proteomics study to investigate the differentially expressed proteins between ruptured IAs (RIAs) and unruptured IAs (UIAs). Results of our present study will provide more insights into the pathogenesis of aneurysm rupture at protein level. With a better understanding of pathophysiological mechanisms associated with aneurysm rupture, some noninvasive treatment strategies may be developed in the future.
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Affiliation(s)
- Pengjun Jiang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, PR China; China National Clinical Research Center for Neurological Diseases, Beijing, PR China
| | - Jun Wu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, PR China; China National Clinical Research Center for Neurological Diseases, Beijing, PR China
| | - Xin Chen
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, PR China; China National Clinical Research Center for Neurological Diseases, Beijing, PR China
| | - Bo Ning
- Department of neurosurgery, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, Guangdong Province, PR China
| | - Qingyuan Liu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, PR China; China National Clinical Research Center for Neurological Diseases, Beijing, PR China
| | - Zhengsong Li
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, PR China; China National Clinical Research Center for Neurological Diseases, Beijing, PR China
| | - Maogui Li
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, PR China; China National Clinical Research Center for Neurological Diseases, Beijing, PR China
| | - Fan Yang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, PR China; China National Clinical Research Center for Neurological Diseases, Beijing, PR China
| | - Yong Cao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, PR China; China National Clinical Research Center for Neurological Diseases, Beijing, PR China
| | - Rong Wang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, PR China; China National Clinical Research Center for Neurological Diseases, Beijing, PR China
| | - Shuo Wang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, PR China; China National Clinical Research Center for Neurological Diseases, Beijing, PR China.
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Genome-wide association analysis identifies new candidate risk loci for familial intracranial aneurysm in the French-Canadian population. Sci Rep 2018. [PMID: 29531279 PMCID: PMC5847615 DOI: 10.1038/s41598-018-21603-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Intracranial Aneurysm (IA) is a common disease with a worldwide prevalence of 1–3%. In the French-Canadian (FC) population, where there is an important founder effect, the incidence of IA is higher and is frequently seen in families. In this study, we genotyped a cohort of 257 mostly familial FC IA patients and 1,992 FC controls using the Illumina NeuroX SNP-chip. The most strongly associated loci were tested in 34 Inuit IA families and in 32 FC IA patients and 106 FC controls that had been exome sequenced (WES). After imputation, one locus at 3p14.2 (FHIT, rs1554600, p = 4.66 × 10–9) reached a genome-wide significant level of association and a subsequent validation in Nunavik Inuit cohort further confirmed the significance of the FHIT variant association (rs780365, FBAT-O, p = 0.002839). Additionally, among the other promising loci (p < 5 × 10−6), the one at 3q13.2 (rs78125721, p = 4.77 × 10−7), which encompasses CCDC80, also showed an increased mutation burden in the WES data (CCDC80, SKAT-O, p = 0.0005). In this study, we identified two new potential IA loci in the FC population: FHIT, which is significantly associated with hypertensive IA, and CCDC80, which has potential genetic and functional relevance to IA pathogenesis, providing evidence on the additional risk loci for familial IA. We also replicated the previous IA GWAS risk locus 18q11.2, and suggested a potential locus at 8p23.1 that warrants further study.
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27
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Zhou S, Dion PA, Rouleau GA. Genetics of Intracranial Aneurysms. Stroke 2018; 49:780-787. [DOI: 10.1161/strokeaha.117.018152] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 12/06/2017] [Accepted: 12/20/2017] [Indexed: 01/23/2023]
Affiliation(s)
- Sirui Zhou
- From the Montréal Neurological Institute and Hospital (S.Z., P.A.D., G.A.R.) and Department of Neurology and Neurosurgery (P.A.D., G.A.R.), McGill University, Québec, Canada; and Department of Medicine, Université de Montréal, Québec, Canada (S.Z.)
| | - Patrick A. Dion
- From the Montréal Neurological Institute and Hospital (S.Z., P.A.D., G.A.R.) and Department of Neurology and Neurosurgery (P.A.D., G.A.R.), McGill University, Québec, Canada; and Department of Medicine, Université de Montréal, Québec, Canada (S.Z.)
| | - Guy A. Rouleau
- From the Montréal Neurological Institute and Hospital (S.Z., P.A.D., G.A.R.) and Department of Neurology and Neurosurgery (P.A.D., G.A.R.), McGill University, Québec, Canada; and Department of Medicine, Université de Montréal, Québec, Canada (S.Z.)
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28
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Kurtelius A, Kallionpää RA, Huttunen J, Huttunen TJ, Helin K, Koivisto T, Frösen J, von und zu Fraunberg M, Peltonen S, Peltonen J, Jääskeläinen JE, Lindgren AE. Neurofibromatosis type 1 is not associated with subarachnoid haemorrhage. PLoS One 2017; 12:e0178711. [PMID: 28575128 PMCID: PMC5456355 DOI: 10.1371/journal.pone.0178711] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 05/17/2017] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The prevalence of intracranial aneurysms (IAs) has been proposed to be elevated in the patients with neurofibromatosis type 1 (NF1). Our aims were to determine the prevalence of NF1 in a large Finnish population based cohort of IA patients and, on the other hand, the occurrences of subarachnoid haemorrhage and unruptured intracranial aneurysms in a nationwide population-based cohort of NF1 patients and its matched ten-fold control cohort. METHODS The Kuopio IA Database (www.kuopioneurosurgery.fi) includes all ruptured and unruptured IA cases admitted to the Kuopio University Hospital (KUH) from its defined Eastern Finnish catchment population since 1980. In this registry-based study, we cross-linked the Kuopio IA database with the Finnish national registry covering all hospital diagnoses. The NF1 diagnoses of the 4543 patients with either saccular of fusiform IA were identified from 1969 to 2015 and verified from patient records. Our second approach was to analyze the occurrence of aneurysmal subarachnoid haemorrhage (aSAH) and unruptured IAs in a nationwide population-based database of 1410 NF1 patients and its ten-fold matched control cohort (n = 14030) using national registry of hospital diagnoses between 1987 and 2014. RESULTS One NF1 patient was identified among the 4543 IA patients. Three verified IA cases (one unruptured IA and two aSAH cases) were identified in the cohort of 1410 NF1 patients, with similar occurrences in the control cohort. CONCLUSIONS We found no evidence in our population-based cohorts to support the conception that NF1 is associated with IAs. Our results indicate that the incidence of aSAH is not elevated in patients with NF1. Further studies are required to confirm that there is no association between NF1 and unruptured IAs.
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Affiliation(s)
- Arttu Kurtelius
- Neurosurgery, NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Neurosurgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Roope A. Kallionpää
- Department of Cell Biology and Anatomy, Institute of Biomedicine, University of Turku, Turku, Finland
| | - Jukka Huttunen
- Neurosurgery, NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Neurosurgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Terhi J. Huttunen
- Neurosurgery, NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Neurosurgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Katariina Helin
- Neurosurgery, NeuroCenter, Kuopio University Hospital, Kuopio, Finland
| | - Timo Koivisto
- Neurosurgery, NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Neurosurgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Juhana Frösen
- Neurosurgery, NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Neurosurgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Mikael von und zu Fraunberg
- Neurosurgery, NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Neurosurgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Sirkku Peltonen
- Department of Dermatology, University of Turku and Turku University Hospital, Turku, Finland
| | - Juha Peltonen
- Department of Cell Biology and Anatomy, Institute of Biomedicine, University of Turku, Turku, Finland
| | - Juha E. Jääskeläinen
- Neurosurgery, NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Neurosurgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Antti E. Lindgren
- Neurosurgery, NeuroCenter, Kuopio University Hospital, Kuopio, Finland
- Neurosurgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
- * E-mail:
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29
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Somers M, Olde Loohuis LM, Aukes MF, Pasaniuc B, de Visser KCL, Kahn RS, Sommer IE, Ophoff RA. A Genetic Population Isolate in The Netherlands Showing Extensive Haplotype Sharing and Long Regions of Homozygosity. Genes (Basel) 2017; 8:E133. [PMID: 28471380 PMCID: PMC5448007 DOI: 10.3390/genes8050133] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 04/20/2017] [Indexed: 11/16/2022] Open
Abstract
Genetic isolated populations have features that may facilitate genetic analyses and can be leveraged to improve power of mapping genes to complex traits. Our aim was to test the extent to which a population with a former history of geographic isolation and religious endogamy, and currently with one of the highest fertility rates in The Netherlands, shows signs of genetic isolation. For this purpose, genome-wide genotype data was collected of 72 unrelated individuals from this population as well as in a sample of 104 random control subjects from The Netherlands. Additional reference data from different populations and population isolates was available through HapMap and the Human Genome Diversity Project. We performed a number of analyses to compare the genetic structure between these populations: we calculated the pairwise genetic distance between populations, examined the extent of identical-by-descent (IBD) sharing and estimated the effective population size. Genetic analysis of this population showed consistent patterns of a population isolate at all levels tested. We confirmed that this population is most closely related to the Dutch control subjects, and detected high levels of IBD sharing and runs of homozygosity at equal or even higher levels than observed in previously described population isolates. The effective population size of this population was estimated to be several orders of magnitude smaller than that of the Dutch control sample. We conclude that the geographic isolation of this population combined with rapid population growth has resulted in a genetic isolate with great potential value for future genetic studies.
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Affiliation(s)
- Metten Somers
- Brain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands.
| | - Loes M Olde Loohuis
- Center for Neurobehavioral Genetics, Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA 90095, USA.
| | - Maartje F Aukes
- Brain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands.
| | - Bogdan Pasaniuc
- Department of Human Genetics, David Geffen School of Medicine at UCLA, University of California Los Angeles, Los Angeles, CA 90095, USA.
- Department of Pathology and Laboratory Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA.
| | - Kees C L de Visser
- Department of General Practice, University Medical Center Groningen, University of Groningen, Groningen 9713 GZ, The Netherland.
| | - René S Kahn
- Brain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands.
| | - Iris E Sommer
- Brain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands.
| | - Roel A Ophoff
- Brain Center Rudolf Magnus, Department of Psychiatry, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands.
- Center for Neurobehavioral Genetics, Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, CA 90095, USA.
- Department of Human Genetics, David Geffen School of Medicine at UCLA, University of California Los Angeles, Los Angeles, CA 90095, USA.
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30
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Yamada Y, Sakuma J, Takeuchi I, Yasukochi Y, Kato K, Oguri M, Fujimaki T, Horibe H, Muramatsu M, Sawabe M, Fujiwara Y, Taniguchi Y, Obuchi S, Kawai H, Shinkai S, Mori S, Arai T, Tanaka M. Identification of six polymorphisms as novel susceptibility loci for ischemic or hemorrhagic stroke by exome-wide association studies. Int J Mol Med 2017; 39:1477-1491. [PMID: 28487959 PMCID: PMC5428971 DOI: 10.3892/ijmm.2017.2972] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 04/20/2017] [Indexed: 11/05/2022] Open
Abstract
In this study, we performed exome-wide association studies (EWASs) to identify genetic variants that confer susceptibility to ischemic stroke, intracerebral hemorrhage (ICH), or subarachnoid hemorrhage (SAH). EWAS for ischemic stroke was performed using 1,575 patients with this condition and 9,210 controls, and EWASs for ICH and SAH were performed using 673 patients with ICH, 265 patients with SAH and 9,158 controls. Analyses were performed with Illumina HumanExome-12 DNA Analysis BeadChip or Infinium Exome-24 BeadChip arrays. The relation of allele frequencies for 41,339 or 41,332 single nucleotide polymorphisms (SNPs) that passed quality control to ischemic or hemorrhagic stroke, respectively, was examined with Fisher's exact test. Based on Bonferroni's correction, a P-value of <1.21x10-6 was considered statistically significant. EWAS for ischemic stroke revealed that 77 SNPs were significantly associated with this condition. Multivariable logistic regression analysis with adjustment for age, sex and the prevalence of hypertension and diabetes mellitus revealed that 4 of these SNPs [rs3212335 of GABRB3 (P=0.0036; odds ratio, 1.29), rs147783135 of TMPRSS7 (P=0.0024; odds ratio, 0.37), rs2292661 of PDIA5 (P=0.0054; odds ratio, 0.35) and rs191885206 of CYP4F12 (P=0.0082; odds ratio, 2.60)] were related (P<0.01) to ischemic stroke. EWASs for ICH or SAH revealed that 48 and 12 SNPs, respectively, were significantly associated with these conditions. Multivariable logistic regression analysis with adjustment for age, sex and the prevalence of hypertension revealed that rs138533962 of STYK1 (P<1.0x10-23; odds ratio, 111.3) was significantly (P<2.60x10-4) associated with ICH and that rs117564807 of COL17A1 (P=0.0009; odds ratio, 2.23x10-8) was significantly (P<0.0010) associated with SAH. GABRB3, TMPRSS7, PDIA5 and CYP4F12 may thus be novel susceptibility loci for ischemic stroke, whereas STYK1 and COL17A1 may be such loci for ICH and SAH, respectively.
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Affiliation(s)
- Yoshiji Yamada
- Department of Human Functional Genomics, Advanced Science Research Promotion Center, Mie University, Tsu 514‑8507, Japan
| | - Jun Sakuma
- CREST, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan
| | - Ichiro Takeuchi
- CREST, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan
| | - Yoshiki Yasukochi
- Department of Human Functional Genomics, Advanced Science Research Promotion Center, Mie University, Tsu 514‑8507, Japan
| | - Kimihiko Kato
- Department of Human Functional Genomics, Advanced Science Research Promotion Center, Mie University, Tsu 514‑8507, Japan
| | - Mitsutoshi Oguri
- Department of Human Functional Genomics, Advanced Science Research Promotion Center, Mie University, Tsu 514‑8507, Japan
| | - Tetsuo Fujimaki
- Department of Cardiovascular Medicine, Inabe General Hospital, Inabe 511-0428, Japan
| | - Hideki Horibe
- Department of Cardiovascular Medicine, Gifu Prefectural Tajimi Hospital, Tajimi 507-8522, Japan
| | - Masaaki Muramatsu
- Department of Molecular Epidemiology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo 101-0062, Japan
| | - Motoji Sawabe
- Section of Molecular Pathology, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan
| | - Yoshinori Fujiwara
- Research Team for Social Participation and Community Health, Tokyo Metropolitan Institute of Gerontology, Tokyo 173-0015, Japan
| | - Yu Taniguchi
- Research Team for Social Participation and Community Health, Tokyo Metropolitan Institute of Gerontology, Tokyo 173-0015, Japan
| | - Shuichi Obuchi
- Research Team for Promoting Support System for Home Care, Tokyo Metropolitan Institute of Gerontology, Tokyo 173-0015, Japan
| | - Hisashi Kawai
- Research Team for Promoting Support System for Home Care, Tokyo Metropolitan Institute of Gerontology, Tokyo 173-0015, Japan
| | - Shoji Shinkai
- Research Team for Social Participation and Health Promotion, Tokyo Metropolitan Institute of Gerontology, Tokyo 173-0015, Japan
| | - Seijiro Mori
- Center for Promotion of Clinical Investigation, Tokyo Metropolitan Geriatric Hospital, Tokyo 173-0015, Japan
| | - Tomio Arai
- Department of Pathology, Tokyo Metropolitan Geriatric Hospital, Tokyo 173-0015, Japan
| | - Masashi Tanaka
- Department of Clinical Laboratory, Tokyo Metropolitan Geriatric Hospital, Tokyo 173-0015, Japan
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31
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Kalani MYS, Wanebo JE, Martirosyan NL, Nakaji P, Zabramski JM, Spetzler RF. A raised bar for aneurysm surgery in the endovascular era. J Neurosurg 2017; 126:1731-1739. [DOI: 10.3171/2016.9.jns161914] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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[Intensive care treatment after aneurysmal subarachnoid hemorrhage]. Anaesthesist 2017; 65:951-970. [PMID: 27900416 DOI: 10.1007/s00101-016-0242-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Aneurysmal subarachnoid hemorrhage (SAH) is a devastating disease and nearly one third of patients die in the acute phase. Due to the bleeding event, a hyperactive sympathetic nervous system and an uncontrolled inflammatory response have a profound local and systemic impact on other organ functions. Neuroendocrinological disorders and cardiopulmonary morbidity are dominant. Despite a decrease in hospital mortality for high volume centers, a high proportion of survivors suffer from neurological deficits. Knowledge of the pathophysiology of vasospasms in the later stages of the disease has increased. Anti-inflammatory treatment does not improve the outcome. Nimodipine prophylaxis in the first 96 h after SAH seems to be the only intervention which has been proven to be advantageous in studies; however, nearly every second survivor of SAH suffers from some neurological deficits and more than one third of survivors report depressive episodes or symptoms of posttraumatic stress disorder.
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Abstract
Subarachnoid haemorrhage is an uncommon and severe subtype of stroke affecting patients at a mean age of 55 years, leading to loss of many years of productive life. The rupture of an intracranial aneurysm is the underlining cause in 85% of cases. Survival from aneurysmal subarachnoid haemorrhage has increased by 17% in the past few decades, probably because of better diagnosis, early aneurysm repair, prescription of nimodipine, and advanced intensive care support. Nevertheless, survivors commonly have cognitive impairments, which in turn affect patients' daily functionality, working capacity, and quality of life. Additionally, those deficits are frequently accompanied by mood disorders, fatigue, and sleep disturbances. Management requires specialised neurological intensive care units and multidisciplinary clinical expertise, which is better provided in high-volume centres. Many clinical trials have been done, but only two interventions are shown to improve outcome. Challenges that remain relate to prevention of subarachnoid haemorrhage by improved screening and development of lower-risk methods to repair or stabilise aneurysms that have not yet ruptured. Multicentre cooperative efforts might increase the knowledge that can be gained from clinical trials, which is often limited by small studies with differing criteria and endpoints that are done in single centres. Outcome assessments that incorporate finer assessment of neurocognitive function and validated surrogate imaging or biomarkers for outcome could also help to advance the specialty.
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Affiliation(s)
- R Loch Macdonald
- Division of Neurosurgery, St Michael's Hospital, Toronto, ON, Canada; Labatt Family Centre of Excellence in Brain Injury and Trauma Research, St Michael's Hospital, Toronto, ON, Canada; Department of Surgery, University of Toronto, Toronto, ON, Canada.
| | - Tom A Schweizer
- Division of Neurosurgery, St Michael's Hospital, Toronto, ON, Canada; Labatt Family Centre of Excellence in Brain Injury and Trauma Research, St Michael's Hospital, Toronto, ON, Canada; Department of Surgery, University of Toronto, Toronto, ON, Canada
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34
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Chheda H, Palta P, Pirinen M, McCarthy S, Walter K, Koskinen S, Salomaa V, Daly M, Durbin R, Palotie A, Aittokallio T, Ripatti S. Whole-genome view of the consequences of a population bottleneck using 2926 genome sequences from Finland and United Kingdom. Eur J Hum Genet 2017; 25:477-484. [PMID: 28145424 PMCID: PMC5346294 DOI: 10.1038/ejhg.2016.205] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 12/05/2016] [Accepted: 12/14/2016] [Indexed: 12/14/2022] Open
Abstract
Isolated populations with enrichment of variants due to recent population bottlenecks provide a powerful resource for identifying disease-associated genetic variants and genes. As a model of an isolate population, we sequenced the genomes of 1463 Finnish individuals as part of the Sequencing Initiative Suomi (SISu) Project. We compared the genomic profiles of the 1463 Finns to a sample of 1463 British individuals that were sequenced in parallel as part of the UK10K Project. Whereas there were no major differences in the allele frequency of common variants, a significant depletion of variants in the rare frequency spectrum was observed in Finns when comparing the two populations. On the other hand, we observed >2.1 million variants that were twice as frequent among Finns compared with Britons and 800 000 variants that were more than 10 times more frequent in Finns. Furthermore, in Finns we observed a relative proportional enrichment of variants in the minor allele frequency range between 2 and 5% (P<2.2 × 10−16). When stratified by their functional annotations, loss-of-function variants showed the highest proportional enrichment in Finns (P=0.0291). In the non-coding part of the genome, variants in conserved regions (P=0.002) and promoters (P=0.01) were also significantly enriched in the Finnish samples. These functional categories represent the highest a priori power for downstream association studies of rare variants using population isolates.
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Affiliation(s)
- Himanshu Chheda
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | - Priit Palta
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland.,Estonian Genome Center, University of Tartu, Tartu, Estonia
| | - Matti Pirinen
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | - Shane McCarthy
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, UK
| | - Klaudia Walter
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, UK
| | - Seppo Koskinen
- Department of Health, National Institute for Health and Welfare, Helsinki, Finland
| | - Veikko Salomaa
- Department of Health, National Institute for Health and Welfare, Helsinki, Finland
| | - Mark Daly
- Analytic and Translational Genetics Unit, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.,Program in Medical and Population Genetics, Broad Institute, Cambridge, MA, USA.,Department of Genetics, Harvard Medical School, Boston, MA, USA
| | - Richard Durbin
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, UK
| | - Aarno Palotie
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland.,Analytic and Translational Genetics Unit, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA.,Program in Medical and Population Genetics, Broad Institute, Cambridge, MA, USA.,Psychiatric & Neurodevelopmental Genetics Unit, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - Tero Aittokallio
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland.,Department of Mathematics and Statistics, University of Turku, Turku, Finland
| | - Samuli Ripatti
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland.,Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, UK.,Public Health, Clinicum, University of Helsinki, Helsinki, Finland
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35
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Hitchcock E, Gibson WT. A Review of the Genetics of Intracranial Berry Aneurysms and Implications for Genetic Counseling. J Genet Couns 2017; 26:21-31. [PMID: 27743245 PMCID: PMC5258806 DOI: 10.1007/s10897-016-0029-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 09/26/2016] [Indexed: 01/25/2023]
Abstract
Here we review the current understanding of the genetic architecture of intracranial berry aneurysms (IBA) to aid in the genetic counseling of patients at risk for this condition. The familial subtype of IBA, familial intracranial aneurysms (FIA), is associated with increased frequency of IBA, increased risk of rupture, and increased morbidity and mortality after rupture. Family history is the strongest predictor for the development of IBA. However, a genetic test is not yet available to assess risk within a family. Studies using linkage analysis, genome-wide association, and next-generation sequencing have found several candidate loci and genes associated with disease onset, but have not conclusively implicated a single gene. In addition to family history, a separate or concurrent diagnosis of autosomal dominant polycystic kidney disease is a strong genetic risk factor for IBA formation. We also discuss the relative risk for developing IBA in several Mendelian syndromes including vascular Ehlers-Danlos syndrome, Marfan syndrome, Neurofibromatosis Type I, and Loeys-Dietz syndrome.
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Affiliation(s)
- Emma Hitchcock
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada.
- BC Children's Hospital, Vancouver, BC, Canada.
| | - William T Gibson
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
- BC Children's Hospital, Vancouver, BC, Canada
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36
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The Genetics of Intracranial Aneurysms. CURRENT GENETIC MEDICINE REPORTS 2017. [DOI: 10.1007/s40142-017-0111-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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37
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Mafi Golchin M, Ghaderian SMH, Akhavan-Niaki H, Jalalian R, Heidari L, Salami SA. Analysis of Two CDKN2B-AS Polymorphisms in Relation to Coronary Artery Disease Patients in North of Iran. INTERNATIONAL JOURNAL OF MOLECULAR AND CELLULAR MEDICINE 2017; 6:31-37. [PMID: 28868267 PMCID: PMC5568190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 08/21/2016] [Indexed: 11/24/2022]
Abstract
Coronary artery disease (CAD) including myocardial infarction (MI) as its complication, is one of the most common heart diseases worldwide and also in Iran, with extremely elevated mortality. CAD is a multifactorial disorder. Twin and family studies at different loci have demonstrated that genetic factors have an important role in the progression of CAD. Many studies have reported a significant association of CDKN2B-AS, also known as ANRIL which is located within the p15, p16, p14 gene cluster at 9p21 locus, with cardiovascular diseases as well as many other diseases like diabetes and cancers. This study investigated two polymorphisms rs10757274 and rs1333042 of CDKN2B-AS gene at 9p21 locus. 205 subjects, comprising 102 controls and 103 CAD patients were genotyped by TaqMan probe real time PCR technique and haplotypes were examined. This study confirmed the association of rs10757274 variants with CAD in Iranian patients (P= 0.003) but genotype and allele distributions of CAD and control groups showed no significant association for the rs1333042. However, frequency of the [G;G] haplotype of these two SNPs was significantly higher in CAD group (P= 0.0002, Odds Ratio = 3.1, 95% CI = 1.7-5.7). Our finding suggests that [G; G] haplotype of rs10757274 and rs1333042 may be considered as a genetic risk factor for susceptibility to CAD in Iranian patients.
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Affiliation(s)
- Maryam Mafi Golchin
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran.
| | - Sayyed Mohammad Hossein Ghaderian
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Corresponding author: Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. E-mail:
| | - Haleh Akhavan-Niaki
- Department of Genetics, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran. ,Cellular and Molecular Biology Research Center, Babol University of Medical Sciences, Babol, Iran.
| | - Rozita Jalalian
- Cardiovascular Research Center, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Laleh Heidari
- Department of Medical Genetics, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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38
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Leinonen V, Jääskeläinen JE. Selling vs. non-selling neuro-oncology research cohorts and manuscripts in the eyes of a grumpy reviewer after 2,000 reviews. Acta Neurochir (Wien) 2017; 159:3-6. [PMID: 27055528 DOI: 10.1007/s00701-016-2787-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 03/21/2016] [Indexed: 10/22/2022]
Affiliation(s)
- Ville Leinonen
- UEF Neurosurgery, UEF Clinical Research School, Kuopio NPH and Early AD Research Group, Kuopio, Finland
| | - Juha E Jääskeläinen
- UEF Neurosurgery, Neurosurgery of KUH NeuroCenter, KUH Neuro-Oncology Group and CyberKnife, Kuopio Intracranial Aneurysm Patient and Family Database, Clinical Research Grant Board of Finnish Cancer Society, Acta Neurochirurgica Editorial Board, Kuopio, Finland.
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39
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Etminan N, Macdonald R. Management of aneurysmal subarachnoid hemorrhage. HANDBOOK OF CLINICAL NEUROLOGY 2017; 140:195-228. [DOI: 10.1016/b978-0-444-63600-3.00012-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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40
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The Effect of an Extreme and Prolonged Population Bottleneck on Patterns of Deleterious Variation: Insights from the Greenlandic Inuit. Genetics 2016; 205:787-801. [PMID: 27903613 DOI: 10.1534/genetics.116.193821] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 11/11/2016] [Indexed: 11/18/2022] Open
Abstract
The genetic consequences of population bottlenecks on patterns of deleterious genetic variation in human populations are of tremendous interest. Based on exome sequencing of 18 Greenlandic Inuit we show that the Inuit have undergone a severe ∼20,000-year-long bottleneck. This has led to a markedly more extreme distribution of allele frequencies than seen for any other human population tested to date, making the Inuit the perfect population for investigating the effect of a bottleneck on patterns of deleterious variation. When comparing proxies for genetic load that assume an additive effect of deleterious alleles, the Inuit show, at most, a slight increase in load compared to European, East Asian, and African populations. Specifically, we observe <4% increase in the number of derived deleterious alleles in the Inuit. In contrast, proxies for genetic load under a recessive model suggest that the Inuit have a significantly higher load (20% increase or more) compared to other less bottlenecked human populations. Forward simulations under realistic models of demography support our empirical findings, showing up to a 6% increase in the genetic load for the Inuit population across all models of dominance. Further, the Inuit population carries fewer deleterious variants than other human populations, but those that are present tend to be at higher frequency than in other populations. Overall, our results show how recent demographic history has affected patterns of deleterious variants in human populations.
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41
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Zhou S, Ambalavanan A, Rochefort D, Xie P, Bourassa CV, Hince P, Dionne-Laporte A, Spiegelman D, Gan-Or Z, Mirarchi C, Zaharieva V, Dupré N, Kobayashi H, Hitomi T, Harada K, Koizumi A, Xiong L, Dion PA, Rouleau GA. RNF213 Is Associated with Intracranial Aneurysms in the French-Canadian Population. Am J Hum Genet 2016; 99:1072-1085. [PMID: 27745834 DOI: 10.1016/j.ajhg.2016.09.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 09/06/2016] [Indexed: 12/14/2022] Open
Abstract
Intracranial aneurysms (IAs) are the result of focal weakness in the artery wall and have a complex genetic makeup. To date, genome-wide association and sequencing studies have had limited success in identifying IA risk factors. Distinct populations, such as the French-Canadian (FC) population, have increased IA prevalence. In our study, we used exome sequencing to prioritize risk variants in a discovery cohort of six FC families affected by IA, and the analysis revealed an increased variation burden for ring finger protein 213 (RNF213). We resequenced RNF213 in a larger FC validation cohort, and association tests on further identified variants supported our findings (SKAT-O, p = 0.006). RNF213 belongs to the AAA+ protein family, and two variants (p.Arg2438Cys and p.Ala2826Thr) unique to affected FC individuals were found to have increased ATPase activity, which could lead to increased risk of IA by elevating angiogenic activities. Common SNPs in RNF213 were also extracted from the NeuroX SNP-chip genotype data, comprising 257 FC IA-affected and 1,988 control individuals. We discovered that the non-ancestral allele of rs6565666 was significantly associated with the affected individuals (p = 0.03), and it appeared as though the frequency of the risk allele had changed through genetic drift. Although RNF213 is a risk factor for moyamoya disease in East Asians, we demonstrated that it might also be a risk factor for IA in the FC population. It therefore appears that the function of RNF213 can be differently altered to predispose distinct populations to dissimilar neurovascular conditions, highlighting the importance of a population's background in genetic studies of heterogeneous disease.
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Affiliation(s)
- Sirui Zhou
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Amirthagowri Ambalavanan
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Department of Human Genetics, McGill University, Montréal, QC H3A 0G4, Canada
| | - Daniel Rochefort
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | - Pingxing Xie
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Faculty of Medicine, McGill University, Montréal, QC H3A 0G4, Canada
| | - Cynthia V Bourassa
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | - Pascale Hince
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | | | - Dan Spiegelman
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | - Ziv Gan-Or
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Department of Human Genetics, McGill University, Montréal, QC H3A 0G4, Canada; Department of Neurology and Neurosurgery, McGill University, Montréal, QC H3A 0G4, Canada
| | - Cathy Mirarchi
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | - Vessela Zaharieva
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada
| | - Nicolas Dupré
- Department of Neurological Sciences, Centre Hospitalier Universitaire de Québec, Québec, QC G1V 0A6, Canada; Department of Medicine, Faculty of Medicine, Laval University, Québec, QC G1V 0A6, Canada
| | - Hatasu Kobayashi
- Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Yoshida Konoecho, Kyoto 606-8501, Japan
| | - Toshiaki Hitomi
- Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Yoshida Konoecho, Kyoto 606-8501, Japan
| | - Kouji Harada
- Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Yoshida Konoecho, Kyoto 606-8501, Japan
| | - Akio Koizumi
- Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Yoshida Konoecho, Kyoto 606-8501, Japan
| | - Lan Xiong
- Department of Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada; Centre de Recherche, Institut Universitaire en Santé Mentale de Montréal, Montréal QC H1N 3M5, Canada
| | - Patrick A Dion
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Department of Neurology and Neurosurgery, McGill University, Montréal, QC H3A 0G4, Canada
| | - Guy A Rouleau
- Montreal Neurological Institute and Hospital, McGill University, Montréal, QC H3A 2B4, Canada; Department of Neurology and Neurosurgery, McGill University, Montréal, QC H3A 0G4, Canada.
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Lemmelä S, Solovieva S, Shiri R, Benner C, Heliövaara M, Kettunen J, Anttila V, Ripatti S, Perola M, Seppälä I, Juonala M, Kähönen M, Salomaa V, Viikari J, Raitakari OT, Lehtimäki T, Palotie A, Viikari-Juntura E, Husgafvel-Pursiainen K. Genome-Wide Meta-Analysis of Sciatica in Finnish Population. PLoS One 2016; 11:e0163877. [PMID: 27764105 PMCID: PMC5072673 DOI: 10.1371/journal.pone.0163877] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 09/15/2016] [Indexed: 12/14/2022] Open
Abstract
Sciatica or the sciatic syndrome is a common and often disabling low back disorder in the working-age population. It has a relatively high heritability but poorly understood molecular mechanisms. The Finnish population is a genetic isolate where small founder population and bottleneck events have led to enrichment of certain rare and low frequency variants. We performed here the first genome-wide association (GWAS) and meta-analysis of sciatica. The meta-analysis was conducted across two GWAS covering 291 Finnish sciatica cases and 3671 controls genotyped and imputed at 7.7 million autosomal variants. The most promising loci (p<1x10-6) were replicated in 776 Finnish sciatica patients and 18,489 controls. We identified five intragenic variants, with relatively low frequencies, at two novel loci associated with sciatica at genome-wide significance. These included chr9:14344410:I (rs71321981) at 9p22.3 (NFIB gene; p = 1.30x10-8, MAF = 0.08) and four variants at 15q21.2: rs145901849, rs80035109, rs190200374 and rs117458827 (MYO5A; p = 1.34x10-8, MAF = 0.06; p = 2.32x10-8, MAF = 0.07; p = 3.85x10-8, MAF = 0.06; p = 4.78x10-8, MAF = 0.07, respectively). The most significant association in the meta-analysis, a single base insertion rs71321981 within the regulatory region of the transcription factor NFIB, replicated in an independent Finnish population sample (p = 0.04). Despite identifying 15q21.2 as a promising locus, we were not able to replicate it. It was differentiated; the lead variants within 15q21.2 were more frequent in Finland (6–7%) than in other European populations (1–2%). Imputation accuracies of the three significantly associated variants (chr9:14344410:I, rs190200374, and rs80035109) were validated by genotyping. In summary, our results suggest a novel locus, 9p22.3 (NFIB), which may be involved in susceptibility to sciatica. In addition, another locus, 15q21.2, emerged as a promising one, but failed to replicate.
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Affiliation(s)
- Susanna Lemmelä
- Health and Work Ability, Finnish Institute of Occupational Health, 00250 Helsinki, Finland
| | - Svetlana Solovieva
- Health and Work Ability, Finnish Institute of Occupational Health, 00250 Helsinki, Finland
| | - Rahman Shiri
- Health and Work Ability, Finnish Institute of Occupational Health, 00250 Helsinki, Finland
| | - Christian Benner
- Institute for Molecular Medicine Finland (FIMM), 00014 University of Helsinki, Helsinki, Finland
- Department of Public Health, 00014 University of Helsinki, Helsinki, Finland
| | - Markku Heliövaara
- Population Health Unit, National Institute for Health and Welfare, 00251 Helsinki, Finland
| | - Johannes Kettunen
- Faculty of Medicine, Institute of Health Sciences, University of Oulu, 90220 Oulu, Finland
- NMR Metabolomics Laboratory, University of Eastern Finland, Kuopio, Finland
- National Institute for Health and Welfare, Helsinki, Finland
| | - Verneri Anttila
- Analytic and Translational Genetics Unit, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts 02114, United States of America
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States of America
| | - Samuli Ripatti
- Institute for Molecular Medicine Finland (FIMM), 00014 University of Helsinki, Helsinki, Finland
- Department of Public Health, 00014 University of Helsinki, Helsinki, Finland
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge, CB10 1SA, United Kingdom
| | - Markus Perola
- Institute for Molecular Medicine Finland (FIMM), 00014 University of Helsinki, Helsinki, Finland
- Public Health Genomics Unit, Department of Chronic Disease Prevention, National Institute for Health and Welfare, 00271 Helsinki, Finland
- The Estonian Genome Center, University of Tartu, 51010 Tartu, Estonia
| | - Ilkka Seppälä
- Department of Clinical Chemistry, Fimlab Laboratories, University of Tampere School of Medicine, 33520 Tampere, Finland
| | - Markus Juonala
- Division of Medicine, Turku University Hospital, 20521 Turku, Finland
- Department of Medicine, University of Turku, 20521 Turku, Finland
| | - Mika Kähönen
- Department of Clinical Physiology, Tampere University Hospital, 33521 Tampere, Finland
| | - Veikko Salomaa
- Department of Health, National Institute for Health and Welfare, 00251 Helsinki, Finland
| | - Jorma Viikari
- Division of Medicine, Turku University Hospital, 20521 Turku, Finland
- Department of Medicine, University of Turku, 20521 Turku, Finland
| | - Olli T. Raitakari
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, 20520 Turku, Finland
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, 20521 Turku, Finland
| | - Terho Lehtimäki
- Department of Clinical Chemistry, Fimlab Laboratories, University of Tampere School of Medicine, 33520 Tampere, Finland
| | - Aarno Palotie
- Institute for Molecular Medicine Finland (FIMM), 00014 University of Helsinki, Helsinki, Finland
- Analytic and Translational Genetics Unit, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts 02114, United States of America
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States of America
- Psychiatric & Neurodevelopmental Genetics Unit, Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts 02114, United States of America
| | - Eira Viikari-Juntura
- Disability Prevention Centre, Finnish Institute of Occupational Health, 00250 Helsinki, Finland
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43
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Huttunen J, Lindgren A, Kurki MI, Huttunen T, Frösen J, von und zu Fraunberg M, Koivisto T, Kälviäinen R, Räikkönen K, Viinamäki H, Jääskeläinen JE, Immonen A. Antidepressant Use After Aneurysmal Subarachnoid Hemorrhage. Stroke 2016; 47:2242-8. [DOI: 10.1161/strokeaha.116.014327] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 07/13/2016] [Indexed: 11/16/2022]
Abstract
Background and Purpose—
To elucidate the predictors of antidepressant use after subarachnoid hemorrhage from saccular intracranial aneurysm (sIA-SAH) in a population-based cohort with matched controls.
Methods—
The Kuopio sIA database includes all unruptured and ruptured sIA cases admitted to the Kuopio University Hospital from its defined catchment population in Eastern Finland, with 3 matched controls for each patient. The use of all prescribed medicines has been fused from the Finnish national registry of prescribed medicines. In the present study, 2 or more purchases of antidepressant medication indicated antidepressant use. The risk factors of the antidepressant use were analyzed in 940 patients alive 12 months after sIA-SAH, and the classification tree analysis was used to create a predicting model for antidepressant use after sIA-SAH.
Results—
The 940 12-month survivors of sIA-SAH had significantly more antidepressant use (odds ratio, 2.6; 95% confidence interval, 2.2–3.1) than their 2676 matched controls (29% versus 14%). Classification tree analysis, based on independent risk factors, was used for the best prediction model of antidepressant use after sIA-SAH. Modified Rankin Scale until 12 months was the most potent predictor, followed by condition (Hunt and Hess Scale) and age on admission for sIA-SAH.
Conclusions—
The sIA-SAH survivors use significantly more often antidepressants, indicative of depression, than their matched population controls. Even with a seemingly good recovery (modified Rankin Scale score, 0) at 12 months after sIA-SAH, there is a significant risk of depression requiring antidepressant medication.
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Affiliation(s)
- Jukka Huttunen
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
| | - Antti Lindgren
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
| | - Mitja I. Kurki
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
| | - Terhi Huttunen
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
| | - Juhana Frösen
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
| | - Mikael von und zu Fraunberg
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
| | - Timo Koivisto
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
| | - Reetta Kälviäinen
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
| | - Katri Räikkönen
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
| | - Heimo Viinamäki
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
| | - Juha E. Jääskeläinen
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
| | - Arto Immonen
- From the Neurosurgery (J.H., A.L., M.I.K., T.H., J.F., M.F., T.K., J.E.J., A.I.) and Neurology (R.K.) of KUH NeuroCenter, and Psychiatry (H.V.), Kuopio University Hospital, and Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland; and Institute of Behavioural Sciences, University of Helsinki, Finland (K.R.)
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Fennell VS, Kalani MYS, Atwal G, Martirosyan NL, Spetzler RF. Biology of Saccular Cerebral Aneurysms: A Review of Current Understanding and Future Directions. Front Surg 2016; 3:43. [PMID: 27504449 PMCID: PMC4958945 DOI: 10.3389/fsurg.2016.00043] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Accepted: 07/06/2016] [Indexed: 12/24/2022] Open
Abstract
Understanding the biology of intracranial aneurysms is a clinical quandary. How these aneurysms form, progress, and rupture is poorly understood. Evidence indicates that well-established risk factors play a critical role, along with immunologic factors, in their development and clinical outcomes. Much of the expanding knowledge of the inception, progression, and rupture of intracranial aneurysms implicates inflammation as a critical mediator of aneurysm pathogenesis. Thus, therapeutic targets exploiting this arm of aneurysm pathogenesis have been implemented, often with promising outcomes.
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Affiliation(s)
- Vernard S Fennell
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center , Phoenix, AZ , USA
| | - M Yashar S Kalani
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center , Phoenix, AZ , USA
| | - Gursant Atwal
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center , Phoenix, AZ , USA
| | - Nikolay L Martirosyan
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center , Phoenix, AZ , USA
| | - Robert F Spetzler
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center , Phoenix, AZ , USA
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van 't Hof FNG, Ruigrok YM, Lee CH, Ripke S, Anderson G, de Andrade M, Baas AF, Blankensteijn JD, Böttinger EP, Bown MJ, Broderick J, Bijlenga P, Carrell DS, Crawford DC, Crosslin DR, Ebeling C, Eriksson JG, Fornage M, Foroud T, von Und Zu Fraunberg M, Friedrich CM, Gaál EI, Gottesman O, Guo DC, Harrison SC, Hernesniemi J, Hofman A, Inoue I, Jääskeläinen JE, Jones GT, Kiemeney LALM, Kivisaari R, Ko N, Koskinen S, Kubo M, Kullo IJ, Kuivaniemi H, Kurki MI, Laakso A, Lai D, Leal SM, Lehto H, LeMaire SA, Low SK, Malinowski J, McCarty CA, Milewicz DM, Mosley TH, Nakamura Y, Nakaoka H, Niemelä M, Pacheco J, Peissig PL, Pera J, Rasmussen-Torvik L, Ritchie MD, Rivadeneira F, van Rij AM, Santos-Cortez RLP, Saratzis A, Slowik A, Takahashi A, Tromp G, Uitterlinden AG, Verma SS, Vermeulen SH, Wang GT, Han B, Rinkel GJE, de Bakker PIW. Shared Genetic Risk Factors of Intracranial, Abdominal, and Thoracic Aneurysms. J Am Heart Assoc 2016; 5:e002603. [PMID: 27418160 PMCID: PMC5015357 DOI: 10.1161/jaha.115.002603] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 03/16/2016] [Indexed: 01/22/2023]
Abstract
BACKGROUND Intracranial aneurysms (IAs), abdominal aortic aneurysms (AAAs), and thoracic aortic aneurysms (TAAs) all have a familial predisposition. Given that aneurysm types are known to co-occur, we hypothesized that there may be shared genetic risk factors for IAs, AAAs, and TAAs. METHODS AND RESULTS We performed a mega-analysis of 1000 Genomes Project-imputed genome-wide association study (GWAS) data of 4 previously published aneurysm cohorts: 2 IA cohorts (in total 1516 cases, 4305 controls), 1 AAA cohort (818 cases, 3004 controls), and 1 TAA cohort (760 cases, 2212 controls), and observed associations of 4 known IA, AAA, and/or TAA risk loci (9p21, 18q11, 15q21, and 2q33) with consistent effect directions in all 4 cohorts. We calculated polygenic scores based on IA-, AAA-, and TAA-associated SNPs and tested these scores for association to case-control status in the other aneurysm cohorts; this revealed no shared polygenic effects. Similarly, linkage disequilibrium-score regression analyses did not show significant correlations between any pair of aneurysm subtypes. Last, we evaluated the evidence for 14 previously published aneurysm risk single-nucleotide polymorphisms through collaboration in extended aneurysm cohorts, with a total of 6548 cases and 16 843 controls (IA) and 4391 cases and 37 904 controls (AAA), and found nominally significant associations for IA risk locus 18q11 near RBBP8 to AAA (odds ratio [OR]=1.11; P=4.1×10(-5)) and for TAA risk locus 15q21 near FBN1 to AAA (OR=1.07; P=1.1×10(-3)). CONCLUSIONS Although there was no evidence for polygenic overlap between IAs, AAAs, and TAAs, we found nominally significant effects of two established risk loci for IAs and TAAs in AAAs. These two loci will require further replication.
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Affiliation(s)
- Femke N G van 't Hof
- Utrecht Stroke Center, Department of Neurology and Neurosurgery, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Ynte M Ruigrok
- Utrecht Stroke Center, Department of Neurology and Neurosurgery, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Cue Hyunkyu Lee
- Department of Convergence Medicine, University of Ulsan College of Medicine and Asan Institute for Life Sciences Asan Medical Center, Seoul, Korea Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland
| | - Stephan Ripke
- Analytic and Translational Genetics Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA Department of Psychiatry and Psychotherapy, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Graig Anderson
- The George Institute for International Health, University of Sydney, Australia
| | | | - Annette F Baas
- Department of Medical Genetics, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jan D Blankensteijn
- Department of Vascular Surgery, VU Medical Center, Amsterdam, The Netherlands
| | - Erwin P Böttinger
- Icahn School of Medicine Mount Sinai, The Charles Bronfman Institute for Personalized Medicine, New York, NY
| | - Matthew J Bown
- Department of Cardiovascular Sciences and the NIHR Leicester Cardiovascular Biomedical Research Unit, University of Leicester, United Kingdom
| | - Joseph Broderick
- Department of Neurology, University of Cincinnati School of Medicine, Cincinnati, OH
| | - Philippe Bijlenga
- Hôpitaux Universitaire de Genève et Faculté de médecine de Genève, Geneva, Switzerland
| | | | - Dana C Crawford
- Department of Epidemiology and Biostatistics, Institute for Computational Biology, Case Western Reserve University, Cleveland, OH Center for Human Genetics Research, Vanderbilt University, Nashville, TN
| | - David R Crosslin
- Division of Medical Genetics, Department of Medicine, University of Washington, Seattle, WA
| | - Christian Ebeling
- Fraunhofer Institut Algorithmen und Wissenschaftliches Rechnen, Sankt Augustin, Germany
| | - Johan G Eriksson
- Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland Folkhälsan Research Center, Helsinki, Finland Department of General Practice and Primary Health Care, and Helsinki University Hospital, University of Helsinki, Finland
| | - Myriam Fornage
- Human Genetics Center and Institute of Molecular Medicine, University of Texas Health Science Center, Houston, TX
| | - Tatiana Foroud
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN
| | | | - Christoph M Friedrich
- Department of Computer Science, University of Applied Science and Arts, Dortmund, Germany
| | - Emília I Gaál
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Finland Public Health Genomics Unit, Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland
| | - Omri Gottesman
- Icahn School of Medicine Mount Sinai, The Charles Bronfman Institute for Personalized Medicine, New York, NY
| | - Dong-Chuan Guo
- Department of Internal Medicine, The University of Texas Medical School at Houston, TX
| | - Seamus C Harrison
- Department of Cardiovascular Science, University of Leicester, United Kingdom
| | - Juha Hernesniemi
- Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland
| | - Albert Hofman
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Ituro Inoue
- Division of Human Genetics, National Institute of Genetics, Mishima, Japan
| | | | - Gregory T Jones
- Surgery Department, University of Otago, Dunedin, New Zealand
| | - Lambertus A L M Kiemeney
- Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
| | - Riku Kivisaari
- Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland
| | - Nerissa Ko
- Department of Neurology, University of California, San Francisco, CA
| | - Seppo Koskinen
- Department of Health, Functional Capacity and Welfare, National Institute for Health and Welfare, Helsinki, Finland
| | - Michiaki Kubo
- Center for Integrative Medical Sciences, RIKEN, Kanagawa, Japan
| | | | - Helena Kuivaniemi
- Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands The Sigfried and Janet Weis Center for Research, Geisinger Health System, Danville, PA Department of Surgery, Temple University School of Medicine, Philadelphia, PA Department of Biomedical Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Mitja I Kurki
- Neurosurgery of NeuroCenter, Kuopio University Hospital, Kuopio, Finland Center for Human Genetics Research, Massachusetts General Hospital, Boston, MA Medical and Population Genetics Program, Broad Institute, Boston, MA
| | - Aki Laakso
- Public Health Genomics Unit, Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland
| | - Dongbing Lai
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN
| | - Suzanne M Leal
- Center for Statistical Genetics, Baylor College of Medicine, Houston, TX
| | - Hanna Lehto
- Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland
| | - Scott A LeMaire
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine and the Texas Heart Institute, Houston, TX
| | - Siew-Kee Low
- Center for Integrative Medical Sciences, RIKEN, Kanagawa, Japan
| | - Jennifer Malinowski
- Center for Human Genetics Research, Vanderbilt University, Nashville, TN Department of Surgery, Yale School of Medicine, New Haven, CT
| | | | - Dianna M Milewicz
- Department of Internal Medicine, The University of Texas Medical School at Houston, TX
| | - Thomas H Mosley
- Department of Medicine, University of Mississippi Medical Center, Jackson, MS
| | - Yusuke Nakamura
- Section of Hematology and Oncology, Department of Medicine, University of Chicago, IL
| | - Hirofumi Nakaoka
- Division of Human Genetics, National Institute of Genetics, Mishima, Japan
| | - Mika Niemelä
- Department of Neurosurgery, Helsinki University Central Hospital, Helsinki, Finland
| | - Jennifer Pacheco
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Peggy L Peissig
- Center for Human Genetics, Marshfield Clinic Research Foundation, Marshfield, WI
| | - Joanna Pera
- Department of Neurology, Jagiellonian University, Krakow, Poland
| | - Laura Rasmussen-Torvik
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Marylyn D Ritchie
- Center for Systems Genomics, The Pennsylvania State University, Pennsylvania, PA
| | - Fernando Rivadeneira
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Andre M van Rij
- Surgery Department, University of Otago, Dunedin, New Zealand
| | | | - Athanasios Saratzis
- Department of Cardiovascular Sciences and the NIHR Leicester Cardiovascular Biomedical Research Unit, University of Leicester, United Kingdom
| | - Agnieszka Slowik
- Department of Neurology, Jagiellonian University, Krakow, Poland
| | | | - Gerard Tromp
- The Sigfried and Janet Weis Center for Research, Geisinger Health System, Danville, PA Department of Biomedical Sciences, Stellenbosch University, Tygerberg, South Africa
| | - André G Uitterlinden
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Shefali S Verma
- Center for Systems Genomics, The Pennsylvania State University, Pennsylvania, PA
| | - Sita H Vermeulen
- Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
| | - Gao T Wang
- Center for Statistical Genetics, Baylor College of Medicine, Houston, TX
| | - Buhm Han
- Department of Convergence Medicine, University of Ulsan College of Medicine and Asan Institute for Life Sciences Asan Medical Center, Seoul, Korea
| | - Gabriël J E Rinkel
- Utrecht Stroke Center, Department of Neurology and Neurosurgery, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Paul I W de Bakker
- Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
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Lalani S, Liu P, Rosenfeld J, Watkin L, Chiang T, Leduc M, Zhu W, Ding Y, Pan S, Vetrini F, Miyake C, Shinawi M, Gambin T, Eldomery M, Akdemir Z, Emrick L, Wilnai Y, Schelley S, Koenig M, Memon N, Farach L, Coe B, Azamian M, Hernandez P, Zapata G, Jhangiani S, Muzny D, Lotze T, Clark G, Wilfong A, Northrup H, Adesina A, Bacino C, Scaglia F, Bonnen P, Crosson J, Duis J, Maegawa G, Coman D, Inwood A, McGill J, Boerwinkle E, Graham B, Beaudet A, Eng C, Hanchard N, Xia F, Orange J, Gibbs R, Lupski J, Yang Y. Recurrent Muscle Weakness with Rhabdomyolysis, Metabolic Crises, and Cardiac Arrhythmia Due to Bi-allelic TANGO2 Mutations. Am J Hum Genet 2016; 98:347-57. [PMID: 26805781 DOI: 10.1016/j.ajhg.2015.12.008] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Accepted: 12/10/2015] [Indexed: 12/25/2022] Open
Abstract
The underlying genetic etiology of rhabdomyolysis remains elusive in a significant fraction of individuals presenting with recurrent metabolic crises and muscle weakness. Using exome sequencing, we identified bi-allelic mutations in TANGO2 encoding transport and Golgi organization 2 homolog (Drosophila) in 12 subjects with episodic rhabdomyolysis, hypoglycemia, hyperammonemia, and susceptibility to life-threatening cardiac tachyarrhythmias. A recurrent homozygous c.460G>A (p.Gly154Arg) mutation was found in four unrelated individuals of Hispanic/Latino origin, and a homozygous ∼34 kb deletion affecting exons 3-9 was observed in two families of European ancestry. One individual of mixed Hispanic/European descent was found to be compound heterozygous for c.460G>A (p.Gly154Arg) and the deletion of exons 3-9. Additionally, a homozygous exons 4-6 deletion was identified in a consanguineous Middle Eastern Arab family. No homozygotes have been reported for these changes in control databases. Fibroblasts derived from a subject with the recurrent c.460G>A (p.Gly154Arg) mutation showed evidence of increased endoplasmic reticulum stress and a reduction in Golgi volume density in comparison to control. Our results show that the c.460G>A (p.Gly154Arg) mutation and the exons 3-9 heterozygous deletion in TANGO2 are recurrent pathogenic alleles present in the Latino/Hispanic and European populations, respectively, causing considerable morbidity in the homozygotes in these populations.
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Abrantes P, Santos MM, Sousa I, Xavier JM, Francisco V, Krug T, Sobral J, Matos M, Martins M, Jacinto A, Coiteiro D, Oliveira SA. Genetic Variants Underlying Risk of Intracranial Aneurysms: Insights from a GWAS in Portugal. PLoS One 2015; 10:e0133422. [PMID: 26186006 PMCID: PMC4505843 DOI: 10.1371/journal.pone.0133422] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 06/26/2015] [Indexed: 12/03/2022] Open
Abstract
Subarachnoid hemorrhage (SAH) is a life-threatening event that most frequently leads to severe disability and death. Its most frequent cause is the rupture of a saccular intracranial aneurysm (IA), which is a blood vessel dilation caused by disease or weakening of the vessel wall. Although the genetic contribution to IA is well established, to date no single gene has been unequivocally identified as responsible for IA formation or rupture. We aimed to identify IA susceptibility genes in the Portuguese population through a pool-based multistage genome-wide association study. Replicate pools were allelotyped in triplicate in a discovery dataset (100 IA cases and 92 gender-matched controls) using the Affymetrix Human SNP Array 6.0. Top SNPs (absolute value of the relative allele score difference between cases and controls |RASdiff|≥13.0%) were selected for technical validation by individual genotyping in the discovery dataset. From the 101 SNPs successfully genotyped, 99 SNPs were nominally associated with IA. Replication of technically validated SNPs was conducted in an independent replication dataset (100 Portuguese IA cases and 407 controls). rs4667622 (between UBR3 and MYO3B), rs6599001 (between SCN11A and WDR48), rs3932338 (214 kilobases downstream of PRDM9), and rs10943471 (96 kilobases upstream of HTR1B) were associated with IA (unadjusted allelic chi-square tests) in the datasets tested (discovery: 6.84E-04≤P≤1.92E-02, replication: 2.66E-04≤P≤2.28E-02, and combined datasets: 6.05E-05≤P≤5.50E-04). Additionally, we confirmed the known association with IA of rs1333040 at the 9p21.3 genomic region, thus validating our dataset. These novel findings in the Portuguese population warrant further replication in additional independent studies, and provide additional candidates to more comprehensively understand IA etiopathogenesis.
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Affiliation(s)
- Patrícia Abrantes
- Instituto Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Maria M. Santos
- Serviço de Neurocirurgia, Hospital de Santa Maria, Lisboa, Portugal
| | - Inês Sousa
- Instituto Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Joana M. Xavier
- Instituto Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Vânia Francisco
- Instituto Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Tiago Krug
- Instituto Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - João Sobral
- Instituto Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Mafalda Matos
- Instituto Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Madalena Martins
- Instituto Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - António Jacinto
- Centro de Estudos de Doenças Crónicas (CEDOC), Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisboa, Portugal
| | | | - Sofia A. Oliveira
- Instituto Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
- * E-mail:
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Huttunen J, Kurki MI, von und zu Fraunberg M, Koivisto T, Ronkainen A, Rinne J, Jaaskelainen JE, Kalviainen R, Immonen A. Epilepsy after aneurysmal subarachnoid hemorrhage: A population-based, long-term follow-up study. Neurology 2015; 84:2229-37. [DOI: 10.1212/wnl.0000000000001643] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Accepted: 02/20/2015] [Indexed: 11/15/2022] Open
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Fukuhara T. Geographical analysis of aneurysmal subarachnoid hemorrhage in Japan utilizing publically-accessible DPC database. PLoS One 2015; 10:e0122467. [PMID: 25811480 PMCID: PMC4374883 DOI: 10.1371/journal.pone.0122467] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 02/12/2015] [Indexed: 11/19/2022] Open
Abstract
Since the launch of the novel medical reimbursement system Diagnosis Procedure Combination (DPC) in 2003 in Japan, inpatient data has been accumulated over time as part of a Japanese governmental nationwide database. This is partially accessible by the public, and this study examined the adequacy of this database as epidemiological research material by extracting the data relating to aneurysmal subarachnoid hemorrhage (aSAH) with special attention given to the limitations that this involves. Datasets after 2010 are considered suitable for analysis because of the numbers of participating hospitals and the analysis term. Extracting the data by prefecture, those with a continuously high aSAH incidence were Aomori, Iwate, Akita, Yamagata, Kochi and Kumamoto Prefectures, and those with low aSAH incidence were Kanagawa, Shiga, Kyoto, Shimane and Ehime Prefectures. Although these obtained results are informative, a publically-accessible DPC database has several limitations. Some limitations have been resolved: the analyzed term each year is now 12-months and the number of participating hospitals seems to have stabilized around 1700. However, other limitations such as masking the numbers in each hospital reporting less than 10 patients still exist, so careful and critical interpretation is necessary in utilizing a publically-accessible DPC database. Considering the potential of this database as material for epidemiological research, future analysis of the entire DPC database by qualified researchers is desirable.
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Affiliation(s)
- Toru Fukuhara
- Department of Neurological Surgery, National Hospital Organization Okayama Medical Center, Okayama, Japan
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Mohan D, Munteanu V, Coman T, Ciurea AV. Genetic factors involves in intracranial aneurysms--actualities. J Med Life 2015; 8:336-41. [PMID: 26351537 PMCID: PMC4556916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 05/26/2015] [Indexed: 11/03/2022] Open
Abstract
UNLABELLED Intracranial aneurysm (IA) is a common vascular disorder, which frequently leads to fatal vascular rupture leading to subarachnoid hemorrhage (SAH). Although various acquired risk factors associated with IAs have been identified, heritable conditions are associated with IAs formation but these syndromes account for less than 1% of all IAs in the population. Cerebral aneurysm disease is related to hemodynamic and genetic factors, associated with structural weakness in the arterial wall, which was acquired by a specific, often unknown, event. Possibly, the trigger moment of aneurysm formation may depend on the dynamic arterial growth, which is closely related to aging/ atherosclerosis. Genetic factors are known to have an important role in IA pathogenesis. Literature data provide complementary evidence that the variants on chromosomes 8q and 9p are associated with IA and that the risk of IA in patients with these variants is greatly increased with cigarette smoking. Intracranial aneurysms are acquired lesions (5-10% of the population). In comparison with sporadic aneurysms, familial aneurysms tend to be larger, more often located in the middle cerebral artery, and more likely to be multiple. ABBREVIATIONS DNA = deoxyribonucleic acid, FIA = familial Intracranial Aneurysm, GWAS = genome-wide association studies, IL-6 = interleukin-6, ISUIA = International Study of Unruptured Intracranial Aneurysms, IA = Intracranial aneurysm, mRNA = Messager ribonucleic acid, SNPs = single-nucleotide polymorphisms, SMCs = smooth muscle cells, sIAs = sporadic IAs, SAH = subarachnoid hemorrhage, TNF-α = tumor necrosis factor-alpha, COL4A1 = type IV collagen alpha-1.
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Affiliation(s)
- D Mohan
- Department of Neurosurgery, Clinical Emergency Hospital Oradea, Romania
| | - V Munteanu
- Department of Neurosurgery, “Sanador” Medical Center Hospital, Bucharest, Romania
| | - T Coman
- Department of Neurosurgery, “Bagdasar-Arseni” Clinical Hospital, Bucharest, Romania
| | - AV Ciurea
- Romanian Ministry of Health Neurosurgical Committee; “Sanador” Medical Center Hospital, Bucharest, Romania; “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
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