Linkage Analysis of Alcohol Dependence Using MOD Scores
Author Information
Author(s): Strauch Konstantin, Fürst Robert, Rüschendorf Franz, Windemuth Christine, Dietter Johannes, Flaquer Antonia, Baur Max P, Wienker Thomas F
Primary Institution: Institute for Medical Biometry, Informatics, and Epidemiology, University of Bonn
Hypothesis
The study investigates the genetic factors contributing to alcohol dependence and their inheritance patterns.
Conclusion
The study found significant linkage peaks for alcohol dependence on several chromosomes, indicating the importance of genetic factors in its inheritance.
Supporting Evidence
- The study analyzed 93 pedigrees of Caucasian ancestry comprising 919 persons.
- Evidence for paternal imprinting was found at several loci on chromosomes 2, 10, 12, 13, 15, and 21.
- The highest MOD score of 5.93 was obtained for chromosome 1 at 140 cM.
Takeaway
This study looks at how genes might affect alcohol dependence by analyzing family data, finding important links on different chromosomes.
Methodology
The study used parametric single-marker linkage analysis and multipoint MOD-score analysis on microsatellite and SNP data from a family sample.
Potential Biases
Potential biases may arise from inaccuracies in genetic maps and assumptions of linkage equilibrium.
Limitations
The study's exploratory nature makes it difficult to control for type I error, and the mode of inheritance for alcohol dependence remains unknown.
Participant Demographics
The sample consisted of 919 individuals from 93 Caucasian pedigrees, with 390 affected individuals according to DSM III-R and Feighner criteria.
Digital Object Identifier (DOI)
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