To date, there is no disease-modifying therapy for Parkinson’s disease; however, promising new agents have advanced into clinical trials.

中文翻译：

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帕金森氏病的有希望的疾病改良疗法。

迄今为止，尚无针对帕金森氏病的疾病缓解疗法；然而，有希望的新药已经进入临床试验。