A Phase II Simon Two-Stage Efficacy Study of Intracerebral CTX-DP in Patients with Stable Paresis of the Arm Following an Ischaemic Stroke

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Disability affects approximately 50% of stroke survivors due to permanent loss of brain tissue. ReNeuron is testing the effectiveness of a unique stem cell product, called CTX, in disabled stroke patients. ReNeuron has developed CTX from human brain stem cells, with cell banks established to provide the large quantities needed for clinical use. The safety of CTX has been assessed in stroke-disabled patients in Scotland. Treatment of all patients in this Phase I clinical trial has been completed, with no reports to date of any serious side effects or worsening in disability in the patients. Sustained reductions in neurological impairment and spasticity have also been observed in most patients compared with their stable pre-treatment baseline performance. TSB support is needed to conduct a Phase II study in up to 41 patients with upper limb paralysis at 2-4 months after their strokes. This proposed clinical trial will determine if CTX produces clinically meaningful improvements in the use of the paralysed arm at 6 months post-treatment in a sufficient number of patients treated. Success in this project will represent a significant milestone for ReNeuron and for the wider stroke field.