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A highly significant association between a COMT haplotype and schizophrenia
Sagiv Shifman1, Michal Bronstein, Meira Sternfeld
1Institute of Life Sciences, The Hebrew University of Jerusalem, Israel.
American Journal of Human Genetics
|October 29, 2002
Summary
This study identified a significant association between a catechol-O-methyltransferase (COMT) gene haplotype and schizophrenia risk. The findings highlight COMT as a key genetic factor in schizophrenia development.
Area of Science:
- Genetics
- Neuroscience
- Psychiatry
Background:
- The catechol-O-methyltransferase (COMT) gene is implicated in schizophrenia due to its role in neurotransmitter metabolism and its location on chromosome 22q11.
- Previous genetic studies on COMT and schizophrenia have yielded inconclusive results.
Purpose of the Study:
- To investigate the association between the COMT gene and schizophrenia using a novel, efficient gene discovery approach.
- To identify specific COMT genetic variations contributing to schizophrenia risk.
Main Methods:
- Employed a large-scale case-control study design, the largest to date for schizophrenia.
- Utilized a homogeneous Ashkenazi Jewish population for genetic analysis.
- Implemented a stepwise approach involving SNP scanning in DNA pools, followed by individual genotyping and haplotype analysis.
Main Results:
- A highly significant association was discovered between a specific COMT haplotype and schizophrenia (P=9.5x10-8).
- The study successfully identified a COMT haplotype as a risk factor for schizophrenia.
Conclusions:
- The findings provide strong evidence for the COMT gene's role in schizophrenia susceptibility.
- The presented gene discovery methodology is effective and applicable to other complex diseases.