Sumitomo files iPS cell therapy for Parkinson’s approval in Japan

5 August 2025

Japanese drugmaker Sumitomo Pharma Company (TYO: 4506) and Tokyo-based Racthera announced that on August 5, they had submitted an application of manufacturing and marketing authorization for allogeneic iPS cell-derived dopaminergic neural progenitor cells (generic name: raguneprocel) indication of the improvement of motor functions during the off-time period of patients with advanced Parkinson’s disease.

Sumitomo Pharma is actively involved in developing treatments for Parkinson's disease, including another iPS cell-derived cell therapy and a drug called Trerief (zonisamide). This drug was approved in Japan for the treatment for parkinsonism in dementia with Lewy bodies (DLB) in 2028. The drug is also marketed as an antiepileptic, branded Zonegran, by Eisai (TYO: 4523).

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