Objective To investigate in Chinese population the relationship between GTP cyclohydrolase 1 gene mutation and phenotypes of dopa-responsive dystonia(DRD).

• 目的 分析国人多巴敏感性肌张力障碍（DRD）患者三磷酸鸟苷环羟化酶1（GCH-1）基因突变与表现型的关系。