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FDA Says Additional Clinical Trial Needed to Demonstrate Efficacy of Pirfenidone in IPF Patients

BRISBANE, Calif., May 4 /PRNewswire-FirstCall/ -- InterMune, Inc. (Nasdaq:ITMN - News) today announced that the U.S. Food and Drug Administration (FDA) issued a complete response letter for the New Drug Application (NDA) for Esbriet™ (pirfenidone) for the treatment of patients with idiopathic pulmonary fibrosis (IPF) to reduce decline in lung function.

A complete response letter is issued by the FDA's Center for Drug Evaluation and Research when the review of an application is completed, but there are one or more reasons that preclude the approval of the NDA at this time. The FDA has requested an additional clinical trial to support the efficacy of Esbriet in IPF patients. InterMune intends to meet with the FDA as soon as possible to explore the best ways to address the points raised by the Agency and to discuss pathways to approval.

"After the positive FDA Advisory Committee meeting of March 9 at which the Committee recommended the approval of the pirfenidone NDA by a 9-3 margin, we are disappointed by this outcome," said Dan Welch, Chairman, Chief Executive Officer and President of InterMune. "We will meet with the FDA as soon as possible to understand their points of view and to determine the most appropriate path forward to expeditiously make Esbriet available to the approximately 100,000 patients with IPF and their families who suffer from this terrible disease and for whom no FDA-approved medicines exist."

About IPF
Idiopathic pulmonary fibrosis (IPF) is a progressive, debilitating and ultimately fatal disease that affects approximately 200,000 people in Europe and the United States combined, with approximately 30,000 new cases reported per year in each region.

IPF is characterized by inflammation and scarring (fibrosis) in the lungs, hindering the ability to process oxygen and 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%. Patients diagnosed with IPF are usually between the ages of 40 and 70, with a median age of 63 years and the disease tends to affect slightly more men than women. There are no medicines approved in Europe and the United States for the treatment of IPF.

Source: InterMune, Inc.

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