XenoPort Shares Plunge On Negative Phase IIb Study
Shares of XenoPort (NASDAQ: XNPT) have plunged on negative Phase IIb study.
The Santa Clara, California-based developer, along with GlaxoSmithKline (NYSE: GSK), said that a Phase IIb study for gabapentin enacarbil failed to “demonstrate a statistically significant improvement compared to placebo as a prophylactic treatment for migraine headaches."
XNPT’s shares plunged 27.28% to $6.45 at 9:45 am EDT.
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