Below 
                  is an excerpt from a press release from Dynavax describing the 
                  recent development.
                Dynavax's 
                  Two Phase 3 Heplisav Trials Cleared
                  by DSMB to Continue Immunizations
                 Berkeley, 
                  CA -- May 27, 2010 -- Dynavax Technologies Corporation (NASDAQ: 
                  DVAX) today announced that the Data Safety Monitoring Board 
                  (DSMB) established for Dynavax's two ongoing Phase 3 trials 
                  for Heplisav has completed the second of its planned safety 
                  assessments. The evaluation included data from 2,264 subjects 
                  that received their first injection, 1,611 of whom received 
                  their first and second injections. The DSMB determined that 
                  the studies may continue without modification.
Berkeley, 
                  CA -- May 27, 2010 -- Dynavax Technologies Corporation (NASDAQ: 
                  DVAX) today announced that the Data Safety Monitoring Board 
                  (DSMB) established for Dynavax's two ongoing Phase 3 trials 
                  for Heplisav has completed the second of its planned safety 
                  assessments. The evaluation included data from 2,264 subjects 
                  that received their first injection, 1,611 of whom received 
                  their first and second injections. The DSMB determined that 
                  the studies may continue without modification. 
                  
                  Heplisav is an innovative vaccine designed to protect against 
                  hepatitis B infection. The DSMB reviewed safety data from two 
                  ongoing multi-center Phase 3 trials evaluating Heplisav, one 
                  trial in adults 40 years and older, and a second trial in chronic 
                  kidney disease patients. The DSMB is comprised of an independent 
                  group of medical experts who are responsible for reviewing and 
                  evaluating subject safety data at regular intervals during the 
                  ongoing trials. 
                  
                  About Heplisav 
                  
                  Heplisav is an investigational adult hepatitis B vaccine. The 
                  vaccine candidate is being evaluated in two Phase 3 studies 
                  that are directed toward fulfilling licensure requirements in 
                  U.S., Canada and Europe. In a completed pivotal Phase 3 trial, 
                  Heplisav demonstrated increased, rapid protection with fewer 
                  doses than current licensed vaccines. Dynavax has worldwide 
                  commercial rights to Heplisav and is developing the vaccine 
                  for large, high-value populations that are less responsive to 
                  current licensed vaccines, including individuals with chronic 
                  kidney disease. Heplisav combines hepatitis B surface antigen 
                  with a proprietary Toll-like Receptor 9 agonist known as ISS 
                  to enhance the immune response. 
                  
                  About Dynavax 
                  
                  Dynavax Technologies Corporation, a clinical-stage biopharmaceutical 
                  company, discovers and develops novel products to prevent and 
                  treat infectious diseases. The Company's lead product candidate 
                  is Heplisav, an investigational adult hepatitis B vaccine designed 
                  to enhance protection more rapidly and with fewer doses than 
                  current licensed vaccines. For more information visit www.dynavax.com.
                  
                  6/4/10
                Source
                  Dynavax 
                  Technologies Corp. Dynavax's Two Phase 3 Heplisav Trials Cleared 
                  by DSMB to Continue Immunizations. Press release. May 27, 2010.