Limitations of Stem Cell Therapy for Parkinson's Disease

Several human studies show positive signals, while research methods and sample sizes continue to develop.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Stem cell therapy, as a potential treatment for Parkinson's disease (PD), has been investigated in many clinical trials for its effectiveness. However, the therapeutic outcomes have shown considerable variability. This may be due to certain limitations of stem cell therapies, such as the inability to ameliorate non-motor symptoms or modify underlying disease mechanisms, and the limited applicability in certain patient populations. Combinations with the recently emerging gene therapy and other available technologies are expected to make up for or break down these limitations of stem cell therapy, thereby broadening its scope of application. In this review, we will discuss the limitations of stem cell therapy in terms of pathogenesis, symptoms, and population, as well as possible coping strategies to enhance the effectiveness of stem cell therapy.

Evidence level

Several human studies show positive signals, while research methods and sample sizes continue to develop.

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