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Updated: May 30, 2026

Array Comparative Genomic Hybridization (Array CGH) for Detection of Genomic Copy Number Variants
Published on: February 21, 2015
Deoxyribonucleic Acid copy number aberrations in vasospastic angina patients using an array comparative genomic
Suk Min Seo1, Yoon Seok Koh, Hae Ok Jung
1Cardiovascular Center and Cardiology Division, College of Medicine, The Catholic University of Korea, Seoul, Korea.
This study used array comparative genomic hybridization (CGH) to identify genetic aberrations in vasospastic angina (VA). Array CGH revealed significant chromosomal copy number variations, highlighting potential genetic links to VA.
Area of Science:
- Genetics
- Cardiology
- Genomics
Background:
- Vasospastic angina (VA) is a form of coronary artery disease linked to coronary artery spasm.
- Emerging evidence suggests a genetic component in the development of VA.
- Array comparative genomic hybridization (CGH) is a novel technique for screening genetic aberrations.
Purpose of the Study:
- To investigate the genetic aberrations associated with vasospastic angina (VA).
- To screen for genetic variations using array CGH in patients with VA.
- To identify candidate genes potentially involved in the pathogenesis of VA.
Main Methods:
- Genomic DNA was extracted from 28 VA patients.
- Array CGH was employed to analyze copy number profiles.
- Reverse transcriptase quantitative polymerase chain reaction (RT-qPCR) confirmed gene aberrations.
Main Results:
- Array CGH identified numerous chromosomal regions with copy number gains and losses.
- Frequent gains were observed in 5p and 11q (50% of samples), while 7q showed the most common losses (54%).
- Specific genes including KCNQ1, SDHA, and MUC17 exhibited significant fold change levels.
Conclusions:
- Array CGH successfully detected candidate chromosomal regions associated with VA pathogenesis.
- Further systematic investigation is warranted to pinpoint causative genes for VA.
- This study provides a foundation for understanding the genetic basis of VA.
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