Identifying Genetic Links to Smoking Rate
Author Information
Author(s): Li Ming D, Ma Jennie Z, Cheng Rong, Dupont Randolph T, Williams Nancy J, Crews Karen M, Payne Thomas J, Elston Robert C
Primary Institution: The University of Texas Health Science Center at San Antonio
Hypothesis
What are the genetic loci associated with smoking rate in the Framingham Heart Study population?
Conclusion
The study found significant genetic links to smoking rate on chromosome 11 and suggestive links on several other chromosomes.
Supporting Evidence
- Significant linkage of smoking rate was found to chromosome 11.
- Suggestive linkage was identified on chromosomes 4, 7, 9, 14, and 17.
- The study analyzed data from 313 extended families with a total of 2493 individuals.
Takeaway
Scientists looked at families in a study to find out which parts of our genes might make people smoke more. They found some important clues on certain chromosomes.
Methodology
Linkage analyses were performed using GENEHUNTER and S.A.G.E. programs on data from 313 extended families.
Potential Biases
The sample was predominantly Caucasian, which may limit the generalizability of the findings to other ethnic groups.
Limitations
The study used self-reported smoking rates, which may not accurately reflect nicotine dependence due to variations in cigarette brands.
Participant Demographics
The study included 2493 individuals from 313 extended families, with an average age of smokers around 39 years.
Statistical Information
P-Value
p = 0.000018
Statistical Significance
p<0.0017
Digital Object Identifier (DOI)
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