About Esbriet® (pirfenidone)Esbriet is an orally active drug that inhibits the synthesis of TGF-beta, a chemical mediator that controls many cell functions including proliferation and differentiation, and plays a key role in fibrosis. It also inhibits the synthesis of TNF-alpha, a cytokine that is known to have an active role in inflammation.On February 28, 2011, the European Commission granted marketing authorization for Esbriet in adults for the treatment of mild to moderate IPF. The approval authorizes marketing of Esbriet in all 27 EU member states. Esbriet has since been approved for marketing in Norway and Iceland. Esbriet is commercially available in Austria, Denmark, Germany, Iceland, Luxembourg, Norway and Sweden. InterMune is conducting a Phase 3 study, ASCEND, to support the regulatory registration of Esbriet for the treatment of IPF in the United States and expects to complete patient enrollment of the study around the end of 2012. About IPFIdiopathic pulmonary fibrosis (IPF) is a progressive, debilitating and ultimately fatal disease characterized predominantly by fibrosis (scarring) in the lungs, hindering the ability for gas exchange in the lungs. IPF is a progressive disease, meaning that over time, lung scarring and symptoms increase in severity. The median survival time from diagnosis is two to five years, with a five-year survival rate of approximately 20-40 percent, which makes IPF more rapidly lethal than many cancers, including breast, ovarian and colorectal. Patients diagnosed with IPF are primarily between the ages of 40 and 80, with a median age of 63 years. The disease tends to affect slightly more men than women. About InterMune InterMune is a biotechnology company focused on the research, development and commercialization of innovative therapies in pulmonology and orphan fibrotic diseases. In pulmonology, the company is focused on therapies for the treatment of idiopathic pulmonary fibrosis (IPF), a progressive and fatal lung disease. Pirfenidone, the only medicine approved for IPF anywhere in the world, is approved for marketing by InterMune in the EU as Esbriet ® and is currently in a Phase 3 clinical trial to support regulatory registration in the United States. Additional information about the study is available at www.ASCENDtrial.com. InterMune's research programs are focused on the discovery of targeted, small-molecule therapeutics and biomarkers to treat and monitor serious pulmonary and fibrotic diseases. For additional information about InterMune and its R&D pipeline, please visit www.intermune.com. Forward-Looking Statements This news release contains forward-looking statements within the meaning of section 21E of the Securities Exchange Act of 1934, as amended, that reflect InterMune's judgment and involve risks and uncertainties as of the date of this release, including without limitation the statements related to the role of Esbriet in the treatment of patients with IPF and our expectation regarding the timing and nature of full enrollment in the ASCEND study and the prospects of success thereof to support regulatory registration of Esbriet for the treatment of IPF in the United States. All forward-looking statements and other information included in this press release are based on information available to InterMune as of the date hereof, and InterMune assumes no obligation to update any such forward-looking statements or information. InterMune's actual results could differ materially from those described in InterMune's forward-looking statements. Other factors that could cause or contribute to such differences include, but are not limited to, those discussed in detail under the heading "Risk Factors" in InterMune's most recent annual report on Form 10-K filed with the Securities and Exchange Commission (SEC) on February 29, 2012 (the "Form 10-K"), most recent quarterly report on Form 10-Q filed with the SEC on August 8, 2012 (the "Form 10-Q") and other periodic reports filed with the SEC, including but not limited to the following: (i) the risks related to the uncertain, lengthy and expensive clinical development process for the company's product candidates, including having no unexpected safety, toxicology, clinical or other issues and having no unexpected clinical trial results such as unexpected new clinical data and unexpected additional analysis of existing clinical data; (ii) risks related to the regulatory process for the company's product candidates, including the possibility that the results of the new 52-week Phase 3 clinical trial (ASCEND) having an FVC endpoint may not be satisfactory to the FDA for InterMune to receive regulatory approval for pirfenidone in the United States; (iii) risks related to unexpected regulatory actions or delays or government regulation generally; and (iv) risks related to our ability to successfully commercialize Esbriet in the EU. The risks and other factors discussed above should be considered only in connection with the fully discussed risks and other factors discussed in detail in the Form 10-K, Form 10-Q and InterMune's other periodic reports filed with the SEC, all of which are available via InterMune's web site at www.intermune.com. SOURCE InterMune, Inc.