About Us > Overview Overview Dynavax is a clinical-stage biopharmaceutical company committed to developing innovative products for the treatment of infectious diseases, respiratory diseases, and cancer. Our novel Toll-like Receptor 9 (TLR9) agonist products are based on our proprietary immunostimulatory sequences (ISS), which are short DNA sequences that stimulate the innate immune response to fight disease and control chronic inflammation. Our clinical product candidates include: HEPLISAV ™ hepatitis B vaccine partnered with Merck & Co., Inc. Hepatitis B therapy owned by Dynavax Cancer and hepatitis C therapies funded by Symphony Dynamo, Inc. Our preclinical pipeline includes: Asthma and COPD therapies partnered with AstraZeneca Universal Flu vaccine funded by the NIH and under supply agreement with Novartis