In November 2003, Biogen and IDEC Pharmaceuticals finalised their $6bn merger, creating Biogen Idec, the third-largest biotechnology company in the world. The company is now a global leader in the development, manufacturing, and commercialisation of novel therapies. Its major products include treatments for relapsing multiple sclerosis, certain B-cell non-Hodgkin's lymphomas and adult patients with moderate-to-severe chronic plaque psoriasis who are candidates for systemic therapy or phototherapy.