Lack of association of DRD4 exon 3 VNTR genotype with reactivity to dynamic smoking cues in movies

Dynamic smoking cues in movies do not affect smokers' craving and this is not modified by DRD4 genotype. Smokers carrying the DRD4 7-repeat allele developed higher levels of craving in the context of watching a movie than non-carriers. Due to the small sample size, these results need to be treated with caution.