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Genetics and smoking behavior.

Robert A Schnoll1, Terrance A Johnson, Caryn Lerman

  • 1Department of Psychiatry, University of Pennsylvania, 3535 Market Street, Philadelphia, PA 19104, USA. schnoll@mail.med.upenn.edu

Current Psychiatry Reports
|October 5, 2007
PubMed
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Genetic factors significantly influence smoking behaviors, from initiation to dependence. Further research is needed to overcome limitations and translate genetic findings into effective smoking cessation treatments.

Area of Science:

  • Behavioral genetics
  • Pharmacogenetics
  • Tobacco regulatory science

Background:

  • Growing evidence implicates genetic factors in smoking initiation, dependence, and persistence.
  • Tobacco use phenotypes exhibit significant heritability, underscoring a genetic component.

Purpose of the Study:

  • To review current research on the heritability of tobacco use phenotypes.
  • To summarize genetic association studies of smoking-related behaviors.
  • To explore the role of pharmacogenetics in smoking cessation therapies.

Main Methods:

  • Review of existing literature on genetic factors in tobacco use.
  • Analysis of genetic association studies for smoking behaviors.
  • Examination of pharmacogenetic investigations for smoking cessation medications.

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Main Results:

  • Genetic factors play a crucial role in various stages of smoking.
  • Methodological limitations, such as small sample sizes and imprecise phenotypes, hinder progress.
  • Pharmacogenetic studies show promise but require replication.

Conclusions:

  • Genetics research on tobacco use is advancing but faces challenges.
  • Addressing practical, economic, ethical, and social barriers is essential for clinical translation.
  • Further research is needed to refine phenotypes and explore gene-environment interactions.