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PRTA vs VALN

Prothena Corporation plc Ordinary Shares and Valneva SE American Depositary Shares

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Prothena Corporation plc Ordinary Shares

Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation in the United States. Its product pipeline include Prasinezumab, an investigational humanized monoclonal antibody which is in phase 2b clinical trial, as well as phase 1 and 2 clinical trials for the treatment of parkinson's disease and other synucleinopathies. The company also develops Coramitug, an investigational antibody, which is in phase 2 clinical trial for potential treatment of transthyretin amyloidosis; BMS-986446, an investigational antibody, which is in phase 2 clinical trial to treat Alzheimer's disease; PRX012, an investigational antibody, which is in phase 1 clinical trial to treat Alzheimer's disease; PRX123, a Dual Aß-Tau Vaccine, which is in preclinical trial for treating Alzheimer's disease; and PRX019, an investigational antibody, which is in phase 1 clinical trial for the potential treatment of neurodegenerative diseases. It has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and master collaboration agreement with Bristol Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. Prothena Corporation plc was incorporated in 2012 and is based in Dublin, Ireland.

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Valneva SE American Depositary Shares

Valneva SE, a specialty vaccine company, develops, manufactures, and commercializes prophylactic vaccines for infectious diseases with unmet needs. It offers IXIARO, an inactivated Vero cell culture-derived Japanese encephalitis vaccine indicated for active immunization against Japanese encephalitis; DUKORAL, an oral vaccine for the prevention of diarrhea caused by Vibrio cholera or heat-labile toxin producing enterotoxigenic Escherichia coli bacterium; and IXCHIQ/ VLA1553, a single-dose, live-attenuated vaccine for the prevention of disease caused by chikungunya virus. The company also develops VLA15, a vaccine candidate against Borrelia, the bacterium that causes Lyme disease; S4V2, a tetravalent bioconjugate vaccine candidate against shigellosis, a diarrheal infection caused by Shigella bacteria; VLA1601, a vaccine candidate targeting the Zika virus, a mosquito-borne viral disease; VLA1554, a vaccine candidate targeting human metapneumovirus; VLA84, a vaccine candidate targeting the prevention of primary symptomatic clostridium difficile infection; and VLA2112, a vaccine candidate to treat patients with epstein-barr virus. It sells its products in the United States, Canada, Germany, Austria, Nordics, the United Kingdom, France, rest of Europe, and internationally. The company was founded in 1998 and is based in Saint-Herblain, France.

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