Amgen Inc. discovers, develops, manufactures, and delivers human therapeutics worldwide. The company's principal products include Enbrel to treat plaque psoriasis, rheumatoid arthritis, and psoriatic arthritis; Otezla for the treatment of adult patients with plaque psoriasis, psoriatic arthritis, and oral ulcers associated with Behçet's disease; Prolia to treat postmenopausal women with osteoporosis; XGEVA for skeletal-related events prevention; Repatha, which reduces the risks of myocardial infarction, stroke, and coronary revascularization; Nplate for the treatment of patients with immune thrombocytopenia; KYPROLIS to treat patients with relapsed or refractory multiple myeloma; Aranesp to treat a lower-than-normal number of red blood cells and anemia; EVENITY for the treatment of osteoporosis in postmenopausal for men and women; Vectibix to treat patients with wild-type RAS metastatic colorectal cancer; BLINCYTO for the treatment of patients with acute lymphoblastic leukemia; TEPEZZA to treat thyroid eye disease; and KRYSTEXXA for the treatment of chronic refractory gout. It also markets other products, including Neulasta, MVASI, AMJEVITA/AMGEVITA, TEZSPIRE, Parsabiv, Aimovig, LUMAKRAS/LUMYKRAS, EPOGEN, KANJINTI, TAVNEOS, RAVICTI, UPLIZNA and PROCYSBI. The company serves healthcare providers, including physicians or their clinics, dialysis centers, hospitals, and pharmacies. It distributes its products through pharmaceutical wholesale distributors, as well as direct-to-consumer channels. The company has collaboration agreements with AstraZeneca plc for the development and commercialization of TEZSPIRE; Novartis Pharma AG to develop and commercialize Aimovig; UCB for the development and commercialization of EVENITY; Kyowa Kirin Co., Ltd. for rocatinlimab development and commercialization; and BeiGene, Ltd. for oncology products expansion and development. Amgen Inc. was incorporated in 1980 and is headquartered in Thousand Oaks, California.