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Patience Pays Off For Kyowa Kirin As Nourianz Finally Gets US FDA OK

 
• By Mandy Jackson

The Japanese firm's original 2007 NDA was rejected in 2008 but it kept faith in the drug, now approved as an adjunct to levodopa/carbidopa. At least one competitor is waiting in the wings.

Parkinsons Disease
Nourianz is a levodopa/carbidopa add-on to treat "off" episodes. • Source: Shutterstock

Kyowa Kirin Co. Ltd. never gave up on Nourianz (istradefylline) for Parkinson's disease (PD) and now the company's patience has paid off with US Food and Drug Administration approval on 28 August for the adenosine A2A receptor antagonist – the first drug approved in its class for PD.

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