InterMune has agreed to sell the rights to Actimmune® (interferon gamma-1b), which is approved for the treatment of chronic granulomatous disease and severe, malignant osteopetrosis, to Vidara Therapeutics International for US$55 M in cash plus royalties over 2 years. The proceeds from the transaction will help InterMune to invest in the registration and commercialisation of its idiopathic pulmonary fibrosis drug Esbriet® (pirfenidone) in Europe and elsewhere.