Seagen Inc is a biotechnology company that develops and commercializes innovative cancer treatments. The company's product portfolio includes antibody-drug conjugates (ADCs) and other targeted therapies for the treatment of various types of cancer. Seagen's flagship product is Adcetris, which is approved for the treatment of Hodgkin lymphoma and other types of lymphoma. The company was founded in 1998 and is headquartered in Bothell, Washington.