Assembly Biosciences, Inc., a biotechnology company, develops therapeutic candidates for the treatment of viral diseases worldwide. Its pipeline includes long-acting helicase-primase inhibitors candidates, including ABI-5336 and ABI-1179, which are in Phase 1a/1b clinical studies for recurrent genital herpes; ABI-4334, a capsid assembly modulator designed to disrupt the replication cycle of hepatitis B virus that is in Phase 1b clinical study; and ABI-6250, an orally bioavailable hepatitis delta virus entry inhibitor that is in Phase 1a clinical study. The company also develops ABI-7423, an oral broad-spectrum non-nucleoside polymerase inhibitor that targets transplant-related herpesviruses. It has an option, license, and collaboration agreement with Gilead Sciences, Inc.