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Updated: Aug 13, 2026

High-throughput Identification of Gene Regulatory Sequences Using Next-generation Sequencing of Circular Chromosome Conformation Capture (4C-seq)
Published on: October 5, 2018
A genome-wide scanning and fine mapping study of COGA data
Hsin-Chou Yang1, Chien-Ching Chang, Chin-Yu Lin
1Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan. hsinchou@ibms.sinica.edu.tw
Genetic mapping identified key genes linked to alcohol dependence using COGA data. Specific haplotypes in NRXN1 and other regions show significant risk or protective effects for alcoholism.
Area of Science:
- Genetics
- Psychiatry
- Statistical Genetics
Background:
- Alcohol dependence is a complex disorder with significant genetic contributions.
- Understanding the genetic architecture of alcoholism is crucial for developing targeted interventions.
- Previous studies have identified several potential genetic loci, but comprehensive mapping is needed.
Purpose of the Study:
- To identify predisposing genes for alcohol dependence using a large-scale genetic mapping study.
- To investigate the role of specific haplotypes and gene-environment interactions in alcoholism.
- To pinpoint novel genetic risk and protective factors for alcohol dependence.
Main Methods:
- Utilized whole-genome linkage and fine mapping analyses on Collaborative Study on the Genetics of Alcoholism (COGA) data.
- Employed stratified analyses to manage ethnic heterogeneity and combined family-based and case-control designs.
- Conducted haplotype and logistic regression analyses, incorporating age, gender, and maximum drinks as covariates.
Main Results:
- Identified significant linkage signals at chromosomal locations D1S225, D1S547, D2S1356, and D7S2846.
- Detected significant alcohol dependence-related haplotypes within the NRXN1 gene region at 2p21.
- Other significant haplotypes were found in inter-gene regions, with elucidated relative risks.
Conclusions:
- The study successfully identified specific genetic regions and haplotypes associated with alcohol dependence.
- NRXN1 and other identified genomic regions represent promising targets for further research into the genetic basis of alcoholism.
- Findings contribute to a deeper understanding of the genetic etiology of alcohol dependence and potential therapeutic targets.
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