Treatment of idiopathic facial paralysis (Bell's Palsy) and secondary facial paralysis with extracellular vesicles: a pilot safety study

Early human evidence such as case series or small samples is exploring possible benefits.

• 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)

Background Paralysis of the facial nerve (CN VII) is one of the most debilitating issues that any patient can encounter. Bell's palsy is the most commonly seen mononeuropathy. Although usually self-limited, symptomatology can persist for decades in persistent cases. The non-surgical alternative therapies discussed in this study are successful without reconstruction and are regenerative. Objective and design We sought to determine a safe new treatment could be developed to restore facial nerve function using extracellular vesicles (EVs) in patients who have been unable to return to normal under a variety of conditions. We performed a pilot safety study of 7 patients with idiopathic and secondary facial paralysis to determine if any functional restoration was possible. Each patient had symptomology for varying periods of time, with diverse House-Brackmann scores. They were all treated with the same protocol of extracellular vesicles (EVs) over a 4-week period of time and were evaluated both before and after treatment. Case presentations All patients in this study received treatment by their private physicians prior to entering the study. A record review was completed, with independent physical examinations. House-Brackmann scores and Facial Disability Indices were obtained prior to, and after completing the study. EVs were injected into the area of the main trunk of the facial ne

Evidence level

Early human evidence such as case series or small samples is exploring possible benefits.

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