Dynavax Technologies Corporation is a biopharmaceutical company, focuses on leveraging the power of the body's innate and adaptive immune responses through toll-like receptor (TLR) stimulation. Previously dba Double Helix Corporation, in September 1996 the firm chnaged its name. Dynavax' lead product candidates include HEPLISAV-B, a hepatitis B vaccine for prevention of infection caused by all known subtypes of the virus in adults age 18 years and older; SD-101, a cancer immunotherapy that is in Phase 2 clinical studies; and DV281, an investigational TLR9 agonist for the treatment of non-small cell lung cancer. Its product candidates also comprise AZD1419, which is in Phase II clinical trial for the treatment of asthma; DV230F that is in preclinical stage for the treatment of liver tumors; and DV1001, a TLR 7&8 agonist, which is in preclinical stage for oncology. The firm has collaboration and license agreements with AstraZeneca AB to develop AZD1419 for the treatment of asthma; and Merck & Co. to develop SD-101 for various immuno-oncology therapies.