PharmaTher to Work with FDA on Ketamine Phase 3 Study

PharmaTher says topline results from a dose-finding and tolerability clinical study of ketamine for treating levodopa-induced dyskinesia (LID) in Parkinson’s patients were sufficient for the company to engage FDA to establish next steps for a planned Phase 3 study to allow for ketamine’s approval under the 505(b)(2) regulatory pathway. A company statement says it will use its proprietary intravenous product Ketarx for the planned Phase 3 study.

The study evaluated the safety, tolerability, and efficacy of low-dose ketamine infusion for the treatment of LID in patients with Parkinson’s disease. PharmaTher reports that 100% of patients treated with ketamine demonstrated a reduction in dyskinesias. Ketamine was well tolerated with no serious adverse events reported, it says.

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