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Genetic Imbalance in Patients with Cervical Artery Dissection
Caspar Grond-Ginsbach1, Bowang Chen2, Michael Krawczak3
1Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany.
Current Genomics
|April 4, 2017
Summary
Rare genetic imbalances in copy number variants (CNVs) may increase the risk of cervical artery dissection (CeAD). These CNVs are linked to cardiovascular system development, suggesting a potential genetic predisposition to CeAD.
Area of Science:
- Genetics
- Cardiovascular Biology
- Neurology
Background:
- Cervical artery dissection (CeAD) susceptibility is influenced by genetic and environmental factors.
- Copy number variants (CNVs) are a type of genetic imbalance that may play a role in CeAD etiology.
- Previous studies suggest a link between genetic factors and CeAD, but specific mechanisms remain unclear.
Purpose of the Study:
- To investigate the association between rare genic copy number variants (CNVs) and the risk of cervical artery dissection (CeAD).
- To identify specific genes and pathways affected by CNVs in CeAD patients compared to control subjects.
- To explore the role of genetic imbalance in the familial aggregation of CeAD.
Main Methods:
- Analysis of high-density microarray data from 833 CeAD patients and 2040 control subjects from the multicenter CADISP study and German PopGen biobank.
- Identification and comparison of rare genic CNVs between CeAD patients and control groups, including disease-free individuals and those with ischemic stroke from other causes.
- Statistical analysis to determine the enrichment of specific genes and pathways in CNVs from CeAD patients and to assess the association with familial history.
Main Results:
- Rare genic CNVs were found in 16.4% of CeAD patients and 17.0% of controls, with no significant difference in frequency.
- CNVs in CeAD patients were enriched for genes involved in muscle organ development and cell differentiation, suggesting a role in arterial development.
- CNVs affecting cardiovascular system development were significantly more common in CeAD patients (OR=2.5, p=0.003) and particularly in those with a familial history of CeAD (OR=11.2, p=0.036).
Conclusions:
- Rare genetic imbalances, particularly those affecting cardiovascular system development, may contribute to the risk of cervical artery dissection (CeAD).
- The findings highlight a potential genetic predisposition to CeAD, especially in familial cases.
- Further validation in independent populations is necessary to confirm these results and elucidate the underlying mechanisms.