Genetic association between the dopamine D3 receptor gene polymorphism (Ser9Gly) and tardive dyskinesia in patients with schizophrenia: A reevaluation in East Asian populations

► No association between the DRD3 Ser9Gly polymorphism in schizophrenia and TD. ► No significant difference in the mean AIMS score. ► A significant age difference between the two groups with vs. without TD p < 0.01). ► No association between the polymorphism in schizophrenia and TD in East Asian populations.