[Genome-wide associations for cigarette smoking behavior]

Area of Science:

• Genetics and Genomics
• Behavioral Science
• Public Health

Context:

• Tobacco smoking is a leading cause of global mortality.
• Genetic factors significantly influence smoking behavior and nicotine dependence.
• Previous research has identified some candidate genes, but a comprehensive understanding remains elusive.

Purpose:

• To review the results of genome-wide association studies (GWASs) and meta-analyses concerning cigarette smoking behavior and nicotine dependence.
• To examine the role of GWAS-identified genomic regions in smoking cessation success and nicotine replacement therapy.
• To contextualize GWAS findings within existing candidate gene association studies and their implications for smoking-related diseases.

Summary:

• This review synthesizes findings from large-scale GWASs and meta-analyses investigating the genetic underpinnings of smoking behaviors.
• The paper highlights key genomic regions associated with nicotine dependence, smoking cessation success, and the efficacy of nicotine replacement therapy.
• It discusses how GWASs offer a hypothesis-free approach to uncover novel genetic variants influencing complex traits like smoking.

Impact:

• Advances understanding of the genetic architecture of smoking behavior and nicotine dependence.
• Provides insights into genetic factors influencing smoking cessation success and response to therapies.
• Informs future research directions for identifying genetic targets to mitigate smoking-related diseases.