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BELLUS Health Inc., a clinical-stage biopharmaceutical company, develops therapeutics for the treatment of refractory chronic cough (RCC) and other cough hypersensitivity indications. Its lead product candidate includes BLU-5937, an antagonist of the P2X3 receptor, which is in Phase II clinical trial for treatment of RCC and chronic pruritus. BELLUS Health Inc. was incorporated in 1993 and is based in Laval, Canada. As of June 28, 2023, BELLUS Health Inc. operates as a subsidiary of GSK plc.

Gemini Therapeutics, Inc., a clinical stage precision medicine company, engages in developing various therapeutic compounds for treating genetically defined age-related macular degeneration (AMD). Its lead candidate is GEM103, a recombinant form of the human complement factor H protein to treat dry AMD patients. The company also develops GEM307 for treatment of systemic diseases. Gemini Therapeutics, Inc. was founded in 2015 and is headquartered in Cambridge, Massachusetts.

Pfenex Inc., a clinical-stage development and licensing biotechnology company, focuses on developing protein therapies for unmet patient needs. Its lead product candidates include PF708, a therapeutic equivalent drug candidate to Forteo (teriparatide) for the treatment of osteoporosis; and novel anthrax vaccine candidates, such as Px563L and RPA563 that have completed Phase Ia clinical study. The company also develops PF582, a biosimilar candidate to Lucentis; PF529, a biosimilar to Neulasta; and hematology/oncology products, including PF743, a recombinant crisantaspase, as well as PF745, a recombinant crisantaspase with half-life extension technology. In addition, it has license and supply agreements for CRM197, a non-toxic mutant of diphtheria toxin. Pfenex Inc. is headquartered in San Diego, California.

Sigilon Therapeutics, Inc., a preclinical stage biotechnology company, develops functional cures for patients with acute and chronic diseases. Its lead product candidate is SIG-002 to replace islet cells for the treatment of type 1 diabetes; and SIG-001, which is in Phase I/II clinical trial to prevent bleeding episodes in patients with moderate to severe Hemophilia A. The company is also developing SIG-205, SIG-218, SIG-220, and SIG-005, which are to treat the non-neurological manifestations of mucopolysaccharidosis type 1; and SIG-207 is to treat of Fabry disease. Sigilon Therapeutics, Inc. has a research collaboration and license agreement with Eli Lilly and Company for the development and commercialization of SLTx product candidates for the treatment of Type 1 Diabetes. The company was formerly known as Sigilon, Inc. and changed its name to Sigilon Therapeutics, Inc. in June 2017. Sigilon Therapeutics, Inc. was incorporated in 2015 and is headquartered in Cambridge, Massachusetts.

Silence Therapeutics plc, a biotechnology company, focuses on the discovery and development novel molecules incorporating short interfering ribonucleic acid (siRNA) to inhibit the expression of specific target genes in hematology, cardiovascular, and rare diseases. The company's mRNAi GalNAc Oligonucleotide Discovery platform consists of precision engineered product candidates designed to target specific disease-associated genes in the liver. The company develops Zerlasiran (SLN360), which is in phase 2 clinical trial for cardiovascular disease associated with elevated lipoprotein(a); and Divesiran (SLN124), an siRNA molecule that is in Phase I clinical trials for the treatment of genetic hematological conditions, including polycythemia vera. It is also developing SLN-COMP-1 and SLN-COMP-2 for complement-mediated diseases; and SLN-HAN-1 and SLN-HAN-2. It has collaboration agreements with AstraZeneca PLC to discover, develop, and commercialize siRNA therapeutics for the treatment of cardiovascular, renal, metabolic, and respiratory diseases; Hansoh Pharmaceutical Group Company Limited to develop siRNAs; and Mallinckrodt Pharma IP Trading DAC to develop and commercialize RNAi drug targets designed to silence the complement cascade in complement-mediated disorders. The company was formerly known as SR Pharma plc and changed its name to Silence Therapeutics plc in May 2007. Silence Therapeutics plc was incorporated in 1994 and is headquartered in London, the United Kingdom.