18.02.2014 15:14:30

Dynavax Withdraws European MAA For Heplisav, Investigational Hepatitis B Vaccine

(RTTNews) - Dynavax Technologies Corp. (DVAX) said Tuesday that it has withdrawn the European Marketing Authorization Application or MAA for Heplisav, its investigational hepatitis B vaccine.

The Day 180 List of Outstanding Issues provided by the European Medicines Agency (EMA) indicated that the current Heplisav safety database is considered to be too small to rule out a risk of less common serious adverse events.

Dynavax said it has chosen to withdraw the application because the required timeframe for response under the MAA procedure is not long enough to permit the collection of the necessary clinical data. Dynavax expects to begin shortly an additional Heplisav clinical trial, HBV-23, that is intended to provide a safety database sufficient to support licensure.

Heplisav is an investigational adult hepatitis B vaccine that combines hepatitis B surface antigen with a proprietary Toll-like Receptor 9 agonist to enhance the immune response. Dynavax has worldwide commercial rights to Heplisav.

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