Shire Pharmaceuticals of the UK has made an undisclosed milestonepayment to Israel's D-Pharm as a result of progress in the two firms' Phase II trial of SPD 421 as an add-on therapy in the treatment of complex partial seizures.
SPD 421, formerly known as DP-VPA, is a phosphatidylcholine conjugate of valproic acid, a drug that is already widely used for the treatment of epilepsy. Addition of PC to valproic acid turns it into a prodrug that, it is claimed, exerts its anticonvulsant effects in direct response to metabolic activity at the epilepsy focus in the brain.
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