Gilead Sciences, Inc. is a biopharmaceutical company, which engages in the research, development, and commercialization of medicines in areas of unmet medical need. The company is headquartered in Foster City, California and currently employs 18,000 full-time employees. The company is engaged in advancing medicines to prevent and treat life-threatening diseases, including human immunodeficiency virus (HIV), viral hepatitis, coronavirus disease 2019 (COVID-19) and cancer. The company is focused on the discovery, development and commercialization of medicines in areas of unmet medical need. Its portfolio of marketed products includes AmBisome, Atripla, Biktarvy, Cayston, Complera, Descovy, Descovy for PrEP, Emtriva, Epclusa, Eviplera, Genvoya, Harvoni, Hepcludex, Hepsera, Jyseleca, Letairis, Odefsey, Sovaldi, Stribild, Sunlenca, Tecartus, Trodelvy, Truvada, Truvada for PrEP, Tybost, Veklury, Vemlidy, Viread, Vosevi, Yescarta and Zydelig. Its product candidates include Bulevirtide, Lenacapavir, Axicabtagene ciloleucel, and Domvanalimab and zimberelimab, and seladelpar. Seladelpar shall be used for the treatment of primary biliary cholangitis (PBC), including pruritus. The firm operates in more than 35 countries.