| InterMune 
                        Sells Danoprevir Rights to Roche for $175 Million Brisbane, 
                        Calif. -- October 6, 2010 -- InterMune, Inc. (Nasdaq: 
                        ITMN) today announced that it has sold worldwide development 
                        and commercialization rights to danoprevir (also known 
                        as RG7227 or ITMN-191) to Hoffman-La Roche Inc. and F. 
                        Hoffman-La Roche Ltd. for $175 million in cash. In connection 
                        with this transaction, the collaboration agreement that 
                        InterMune and Roche entered into in October 2006 has been 
                        terminated. In addition, the companies are actively exploring 
                        ways to continue their ongoing work together on other 
                        HCV research programs. InterMune noted that as a result 
                        of this transaction, the company will make no further 
                        investment in danoprevir and that, including net proceeds 
                        from the transaction, it currently expects to have a cash 
                        balance of approximately $290 million at the end of 2010. Dan 
                        Welch, Chairman, Chief Executive Officer and President 
                        of InterMune said, "After conducting a careful review 
                        of our strategy and financial position, we have decided 
                        to divest our rights to danoprevir to Roche. This transaction 
                        provides a very substantial non-dilutive cash infusion 
                        that allows us to continue to independently and aggressively 
                        pursue the registration and commercialization of pirfenidone 
                        in the US and EU, and eliminates our obligation to make 
                        significant ongoing investments related to the further 
                        development and commercialization of danoprevir. We are 
                        now in a very strong financial position that provides 
                        us with the resources and flexibility to maximize the 
                        value of pirfenidone, our largest and nearest-term value 
                        creation opportunity." About 
                        InterMune InterMune 
                        is a biotechnology company focused on the research, development 
                        and commercialization of innovative therapies in pulmonology 
                        and hepatology. InterMune has an R&D portfolio addressing 
                        idiopathic pulmonary fibrosis (IPF) and hepatitis C virus 
                        (HCV) infections. The pulmonology portfolio includes pirfenidone 
                        for which InterMune has completed a Phase 3 program in 
                        patients with IPF (CAPACITY). A Marketing Authorization 
                        Application (MAA) for pirfenidone is under review by the 
                        European Medicines Agency (EMA). The hepatology portfolio 
                        includes next-generation HCV protease inhibitor and NS5A 
                        research programs.  For 
                        additional information about InterMune and its R&D 
                        pipeline, please visit www.intermune.com. |