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Atea Pharmaceuticals, Inc., a clinical-stage biopharmaceutical company, discovers, develops, and commercializes antiviral therapeutics for patients with viral infections. Its lead product candidate is AT-527, an oral antiviral candidate that is in Phase 3 SUNRISE-3 clinical trial for the treatment of patients with COVID-19. The company also develops bemnifosbuvir in combination with ruzasvir, which is in Phase 2 clinical trial, for the treatment of hepatitis C virus (HCV); and a protease inhibitor for the treatment of COVID-19. It has a license agreement with MSD International GmbH for the development, manufacture, and commercialization of Ruzasvir, an NS5A inhibitor, for the treatment of HCV. Atea Pharmaceuticals, Inc. was incorporated in 2012 and is headquartered in Boston, Massachusetts.

Generation Bio Co. develops non-viral genetic medicines for the treatment of rare and prevalent diseases. The company develops cell-targeted lipid nanoparticle (ctLNP) platform, a modular delivery system for nucleic acids to avoid off-target clearance by the liver and spleen that enables ctLNPs to persist in systemic circulation, which allows for highly selective and potent ligand-driven targeting to specific tissues and cell types; and novel immune-quiet DNA (iqDNA) to enable long-lasting high levels of gene expression from non-integrating episomes and avoids innate immune sensors that have long prevented DNA from use in non-viral systems. It uses its platform for developing a portfolio of programs for treating cancer, autoimmune, hematologic disorders, prioritizing sickle cell, beta-thalassemia, and hemophilia A diseases, as well as for other tissues and cell types, including retina, skeletal muscle, and central nervous system. The company was formerly known as Torus Therapeutics, Inc. and changed its name to Generation Bio Co. in November 2017. Generation Bio Co. was incorporated in 2016 and is headquartered in Cambridge, Massachusetts.

Seres Therapeutics, Inc., a microbiome therapeutics company, develop microbiome therapeutics to treat the modulation of the colonic microbiome. It develops a novel class of biological drugs that are designed to treat by modulating the microbiome to restore health by repairing the function of a disrupted microbiome to a non-disease state. The company's lead product candidate is VOWST, an oral microbiome therapeutic that has completed Phase III clinical trial for the treatment of recurrent Clostridioides difficile infection. Its product pipeline also includes SER-155, an investigational oral fermented microbiome therapeutic which is in Phase 1b clinical trials for the treatment of gastrointestinal infections, bacteremia, and graft versus host disease in immunocompromised patients including patients receiving allogeneic hematopoietic stem cell transplantation. In addition, the company engages in the development of SER-287 which is in Phase 2b and SER-301 that is in Phase 1b to treat ulcerative colitis. Further, it has license Agreement with NHSc Rx License GmbH for the therapeutic products based on the microbiome technology, which includes VOWST product candidate, which is developed for the treatment of CDI and recurrent CDI; and collaboration license agreement with Société des Produits Nestlé S.A. (Nestlé) for the development and commercialization of certain product candidates for the treatment and management of CDI and inflammatory bowel disease including UC and Crohn's disease. The company was formerly known as Seres Health, Inc. and changed its name to Seres Therapeutics, Inc. in May 2015. Seres Therapeutics, Inc. was incorporated in 2010 and is headquartered in Cambridge, Massachusetts.

uniQure N.V. develops treatments for patients suffering from rare and other devastating diseases. It offers HEMGENIX that has completed Phase III HOPE-B pivotal trial for the treatment of hemophilia B. The company also develops AMT-130, a gene therapy that is in Phase I/II clinical study for the treatment of Huntington's disease. In addition, it is developing AMT-162, which is in preclinical trial for the treatment of superoxide dismutase 1- amyotrophic lateral sclerosis; AMT-260 that is in preclinical trial to treat temporal lobe epilepsy; AMT-191, which is in preclinical trial for the treatment of fabry disease; AMT-161 that is in preclinical trial to treat amyotrophic lateral sclerosis caused by mutations; AMT-240, which is in preclinical trial to for the treatment of autosomal dominant Alzheimer's disease; and AMT-210 that is in preclinical trial to treat Parkinson's disease. The company was founded in 1998 and is headquartered in Amsterdam, the Netherlands.

Xencor, Inc., a clinical stage biopharmaceutical company, focuses on the discovery and development of engineered monoclonal antibody and cytokine therapeutics to treat patients with cancer and autoimmune diseases. The company provides Sotrovimab that targets the SARS-CoV-2 virus; Ultomiris for the treatment of patients with paroxysmal nocturnal hemoglobinuria and atypical hemolytic uremic syndrome; and Monjuvi for the treatment of patients with relapsed or refractory diffuse large B-cell lymphoma. It develops Plamotamab, a bispecific antibody, which is in Phase I clinical trial to treat non-Hodgkin lymphoma; Vudalimab, a bispecific antibody, which is in Phase II clinical trial to treat metastatic castration-resistant prostate cancer and other solid tumor types. The company is also developing XmAb306, which is in Phase I clinical trial to treat solid tumors; XmAb104, which is in Phase II clinical trial to treat patients with selected solid tumors; XmAb564 that is in Phase Ia clinical trial to treat autoimmune diseases; AMG 509, which is in Phase I clinical trial to treat prostate cancer; XmAb819 for patients with renal cell carcinoma; XmAb541 for the treatment of ovarian cancer; and XmAb662 which is in Phase I clinical trial to treat patients with solid tumors. In addition, the company develops VIR-3434, which is in Phase II clinical trial for patients with hepatitis B virus infection; and VIR-2482 that is in Phase 2 clinical trial to trat hepatitis B virus. The company develops AIMab7195 to reduce blood serum levels of IgE that mediates allergic responses and allergic disease; Obexelimab to treat autoimmune disease; and Xpro1595 to treat patients with Alzheimer's disease, and depression. It has a license agreement with Caris Life Sciences. Xencor, Inc. was incorporated in 1997 and is headquartered in Pasadena, California.