November 13, 2017 Source: investors.dynavax 189
Dynavax Technologies Corporation (NASDAQ: DVAX) announced that the U.S. Food and Drug Administration (FDA) has approved HEPLISAV-B [Hepatitis B Vaccine, Recombinant (Adjuvanted)] for prevention of infection caused by all known subtypes of hepatitis B virus in adults age 18 years and older. HEPLISAV-B is the first new hepatitis B vaccine in the United States in more than 25 years and the only two-dose hepatitis B vaccine for adults.
Hepatitis B is an extremely infectious and potentially deadly virus affecting a wide range of adults in the United States. There is no cure for hepatitis B, and infections are on the rise. In 2015, new cases of acute hepatitis B increased by more than 20 percent nationally.(i) Hepatitis B can be prevented through effective vaccination. Current hepatitis B vaccines require three shots over a six-month period, however, almost half of adults fail to complete the series within one year.(ii)
"Prevention of hepatitis B in adults through vaccination is more important than ever given the increase in the rate of infections," said William Schaffner, M.D., professor of Preventive Medicine, Vanderbilt University Medical Center. "Too many at-risk adults remain unprotected against this virus. A two-dose schedule with higher rates of protection, along with other strategies, may help us move closer to the goal of eliminating hepatitis B as a public health problem in the United States."
The approval of HEPLISAV-B was based on data from three Phase 3 non-inferiority trials of nearly 10,000 adult participants who received HEPLISAV-B. The pivotal studies compared HEPLISAV-B administered in two doses over one month to Engerix-B administered in three doses over a six-month schedule. Results from the largest Phase 3 trial, which included 6,665 participants, showed that HEPLISAV-B demonstrated a statistically significantly higher rate of protection of 95% compared with 81% for Engerix-B. In a subgroup analysis of 961 participants with Type 2 diabetes, HEPLISAV-B demonstrated a statistically significantly higher rate of protection of 90% compared to 65% for Engerix-B. Across the three clinical trials, the most common local reaction was injection site pain (23% to 39%). The most common systemic reactions were fatigue (11% to 17%) and headache (8% to 17%).
"HEPLISAV-B is the first FDA-approved product for Dynavax and demonstrates our ability to develop innovative products and progress them from discovery to commercialization," said Eddie Gray, chief executive officer of Dynavax. "We would like to thank the many study participants and clinical trial investigators who contributed to the development of HEPLISAV-B. We expect that it will become an essential tool in the public health community's fight to prevent hepatitis B, and we look forward to making HEPLISAV-B available to clinicians and their adult patients."
Dynavax expects to commercially launch HEPLISAV-B in the United States in the first quarter of 2018. In preparation for launch, Dynavax has been building commercial infrastructure and optimizing manufacturing processes to meet anticipated demand.By Ddu
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