Nicotine abstinence genotyping: Assessing the impact on smoking cessation clinical trials

G. R. Uhl, T. Drgon, C. Johnson, J. E. Rose

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Twin studies document substantial heritability for successful abstinence from smoking. A genome-wide association study has identified markers whose allele frequencies differ with nominal P <0.005 in nicotine-dependent clinical trial participants who were successful vs unsuccessful in abstaining from smoking; many of these results are also supported by data from two additional samples. More study is required to precisely determine the variance in quitting success that can be accounted for by the single-nucleotide polymorphisms that are currently identified and to precisely classify individuals who may display varying degrees of genetic vs environmental effects into quitters or nonquitters. However, the data at hand do allow us to model the effects of genotypic stratification in smoking cessation trials. We identify relationships between the costs of identifying and genotyping prospective trial participants vs the costs of performing the clinical trials. We quantitate the increasing savings that result from genetically stratified designs as recruiting/genotyping costs go down and trial costs increase. This model helps to define the circumstances in which genetically stratified designs may enhance power and reduce costs for smoking cessation clinical trials.

Original languageEnglish (US)
Pages (from-to)111-115
Number of pages5
JournalPharmacogenomics Journal
Issue number2
StatePublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • Pharmacology
  • Molecular Medicine
  • Genetics


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