Kyowa Kirin Presses On With Parkinson's Prospect In US As Successor Readied

Some 12 years after first NDA submission, Kyowa Hakko Kirin tries again to secure US approval for troubled Parkinson's drug, but some analysts remain unsure of commercial potential and the company itself is progressing a successor.

Parkinson's
Kyowa Kirin Progresses Parkinson's Prospects • Source: Shutterstock

At the time, it looked likely that the Phase III failure in late 2016 of Kyowa Hakko Kirin Co. Ltd.'s Parkinson's disease drug istradefylline might mark the end of the line for the molecule in the US, given its already troubled development timeline there.

Fast forward to the present and the Japanese firm is still doggedly pursuing an approval in what could become the drug's largest market, where it has just resubmitted an NDA

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