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Assembly Biosciences, Inc., a biopharmaceutical company, discovers and develops therapeutic candidates for the treatment of hepatitis B virus (HBV) infection in the United States. The company's next-generation HBV core inhibitors include ABI-4334, which is in Phase 1a studies for the treatment of HBV; and ABI-H3733, which is in Phase 1b clinical study. It is also involved in novel small molecule approaches for HBV and hepatitis delta virus (HDV) comprising an orally bioavailable HBV/HDV entry inhibitor and liver-focused interferon-a receptor agonist. In addition, the company develops Herpesvirus programs, such as ABI-5366 HSV-2, a long-acting helicase inhibitor; and pan-herpes non-nucleoside polymerase inhibitors for transplant-associated infections. Further, Assembly Biosciences, Inc. has collaboration agreement with BeiGene, Ltd. to develop and commercialize the novel core inhibitor product candidates for chronic HBV infection in the People's Republic of China, Hong Kong, Taiwan, and Macau; and clinical trial collaboration agreement with Arbutus Biopharma Corporation to conduct a randomized, multi-center, and open-label clinical trials, as well as agreement with Antios Therapeutics, Inc. for triple combination therapy. The company also has license agreement with Indiana University Research and Technology Corporation for HBV research, as well as a partnership with Gilead Sciences, Inc. to develop next-generation therapeutics for serious viral diseases. The company was formerly known as Ventrus Biosciences, Inc. and changed its name to Assembly Biosciences, Inc. in June 2014. Assembly Biosciences, Inc. was incorporated in 2005 and is headquartered in South San Francisco, California.

Dynavax Technologies Corporation, a commercial stage biopharmaceutical company, focuses on developing and commercializing vaccines in the United States. It markets HEPLISAV-B, a hepatitis B vaccine for prevention of infection caused by all known subtypes of hepatitis B virus in age 18 years and older in the United States and Europe. The company also manufactures and sells CpG 1018, the adjuvant used in HEPLISAV-B. Dynavax Technologies Corporation has a collaboration agreement with Valneva Scotland Limited; Zhejiang Clover Biopharmaceuticals, Inc.; Clover Biopharmaceuticals (Hong Kong) Co., Limited; Biological E. Limited; PT Bio Farma; Medigen Vaccine Biologics; and Serum Institute of India Pvt. Ltd. The company was formerly known as Double Helix Corporation and changed its name to Dynavax Technologies Corporation in September 1996. The company was incorporated in 1996 and is headquartered in Emeryville, California.

Geron Corporation, a late-stage clinical biopharmaceutical company, focuses on the development and commercialization of therapeutics for myeloid hematologic malignancies. It develops imetelstat, a telomerase inhibitor that is in Phase 3 clinical trials, which inhibits the uncontrolled proliferation of malignant stem and progenitor cells in myeloid hematologic malignancies for the treatment of low or intermediate-1 risk myelodysplastic syndromes and intermediate-2 or high-risk myelofibrosis. The company was incorporated in 1990 and is headquartered in Foster City, California.

NuCana plc, a clinical-stage biopharmaceutical company, engages in the development of medicines to treat patients with cancer. The company applies its ProTide technology to transform prescribed chemotherapy agents and nucleoside analogs into medicines. The company, through its technology, is developing medicines, ProTides, to overcome the limitations of nucleoside analogs and generate much higher concentrations of anti-cancer metabolites in cancer cells. Its pipeline includes NUC-3373, a chemical entity derived from the nucleoside analog 5-fluorouracil, which is in a Phase 1b/2 study in patients with metastatic colorectal cancer. The company also initiated a randomized Phase 2 study of NUC-3373, in combination with other agents, for the second-line treatment of patients with advanced colorectal cancer; and initiated a Phase 1b/2 modular study of NUC-3373 in combination with the PD-1 inhibitor pembrolizumab for patients with advanced solid tumors and in combination with docetaxel for patients with lung cancer. Its pipeline also comprises NUC-7738, a transformation of 3'-deoxyadenosine that is in the Phase 2 part of a Phase 1/2 study in patients with advanced solid tumors which is evaluating NUC-7738 as a monotherapy and in combination with pembrolizumab. It has a research, collaboration, and license agreement with Cardiff University and University College Cardiff Consultants Ltd. for the design, synthesis, characterization, and evaluation of ProTides; and an assignment, license, and collaboration agreement with Cardiff ProTides Ltd. The company was formerly known as NuCana BioMed Limited and changed its name to NuCana plc in August 2017. NuCana plc was incorporated in 1997 and is headquartered in Edinburgh, the United Kingdom.

Urovant Sciences Ltd., a clinical-stage biopharmaceutical company, focuses on developing and commercializing therapies for urologic conditions in the United States. The company's lead product candidate is vibegron, an oral small molecule beta-3 agonist for the treatment of overactive bladder (OAB), OAB in men with benign prostatic hyperplasia, and abdominal pain due to irritable bowel syndrome. It is also developing URO-902, a gene therapy for patients with OAB who have failed oral pharmacological therapy. The company was formerly known as Thalavant Sciences Ltd. and changed its name to Urovant Sciences Ltd. in January 2017. Urovant Sciences Ltd. was founded in 2016 and is based in London, the United Kingdom. Urovant Sciences Ltd. operates as a subsidiary of Sumitovant Biopharma Ltd.