Portola Pharmaceuticals Inc. suffered a surprise setback in August this year when its reversal agent AndexXa (andexanet) was the subject of a complete response letter from the US FDA. (Also see "Portola Seeks Narrower Label For AndexXa Antidote After FDA Rebuff" - Scrip, 19 August, 2016.)
Portola was hoping to secure approval for its reversing effects to the Factor Xa inhibitors Johnson & Johnson/Bayer...







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