Association of the DRD2 gene Taq1A polymorphism and smoking behavior: A meta-analysis and new data

摘要

Introduction: Many studies have investigated the association of the dopamine type-2 receptor (DRD2) Taq1A polymorphism with tobacco use and cigarette smoking behaviors, but findings remain equivocal. There is a biological basis for considering that this association differs by sex, and differences in subpopulations might explain some of the contradictory evidence.