Assembly Biosciences, Inc. is a biotechnology company, which engages in the development of products for infectious diseases, such as chronic hepatitis B virus and illnesses associated with a dysbiotic microbiome. It focuses on two innovative platform programs: oral therapeutics for the treatment of hepatitis B virus, and the oral synthetic live biotherapeutics candidate. The company was founded by Uri Lopatin and Derek A. Small on October 7, 2005 and is headquartered in South San Francisco, CA.