Synergy Pharmaceuticals, Biogen and Insys Therapeutics were among the biotech stock movers in premarket trading on Thursday.
The company's shares were up 24% ahead of market's open on an FDA approval.
Positive phase three data was a boon for Trevena, but Synergy's "Poop Troop" put pressure on its stock.
Answering questions from the Biotech Mailbag on FLXN and SGYP.
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