Compositions and regimens useful in treating hemophilia A are provided. The compositions include recombinant adeno-associated virus (rAAV) with a transthyretin enhancer and promoter driving expression of a human Factor VIII.提供有用於治療A型血友病之組成物及療法。該組成物包括重組腺相關病毒(recombinant adeno-associated virus,rAAV),該重組腺相關病毒具驅動人類因子VIII表現之轉甲狀腺素蛋白增強子及啟動子。