Shares of Dynavax (NAS: DVAX) fell 33% in November, after a Food and Drug Administration advisory committee voted 8-5 against its hepatitis-B vaccine Heplisav. Despite voting 13-1 in favor of the drug's efficacy -- because it outperformed the current standard drug in this space in terms of percentage of adults protected after a period of seven months -- committee members expressed concerns over insufficient safety data. Dynavax has its PDUFA date in late February, and shares would soar upon approval, but investors may be asking too much to think that the FDA will forgo its panel's recommendation regarding safety.
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The article Why Dynavax Lost in November originally appeared on Fool.com.
David Williamson has no positions in the stocks mentioned above. Follow him on Twitter @MotleyDavid. Max Macaluso has no positions in the stocks mentioned above. The Motley Fool owns shares of GlaxoSmithKline. Motley Fool newsletter services recommend GlaxoSmithKline. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.