Mapping Alcoholism Genes Using SNPs and Microsatellites
Author Information
Author(s): Wang Shuang, Huang Song, Liu Nianjun, Chen Liang, Oh Cheongeun, Zhao Hongyu
Primary Institution: Columbia University
Hypothesis
How do whole-genome scans using SNPs compare to those using microsatellites in identifying genes associated with alcoholism?
Conclusion
The study found that SNP scans provided stronger linkage signals for alcoholism than microsatellite scans.
Supporting Evidence
- Both SNP and microsatellite scans indicated strong linkage signals on chromosomes 2 and 7.
- The SNP scan provided stronger linkage signals than the microsatellite scan.
- Three regions of significant linkages were detected in the SNP scan but not in the microsatellite scan.
- The higher information content of SNPs is a major advantage over microsatellites.
Takeaway
Researchers looked at DNA from many families to find genes linked to alcoholism, and they found that a newer method using SNPs worked better than an older method using microsatellites.
Methodology
Nonparametric linkage analysis using SNPs and microsatellites on 143 pedigrees.
Potential Biases
Potential genotyping errors were addressed, but their impact was small.
Limitations
The study's findings may not be generalizable due to the specific dataset used.
Participant Demographics
143 pedigrees with 1,614 individuals genotyped.
Statistical Information
P-Value
0.0012
Confidence Interval
1-LOD intervals ranged from 9 cM to 40 cM.
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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