• Jason Potts and Dinesh Yogaratnam.
• Department of Pharmacy, UMass Memorial Medical Center, Worcester, MA, USA.
• Ann Pharmacother. 2013 Mar 1;47(3):361-7.

ObjectiveTo evaluate the published clinical literature on the role of pirfenidone for the treatment of idiopathic pulmonary fibrosis (IPF).Data SourcesA systematic literature search was performed using the key words pirfenidone or Esbriet, alone and in combination, with IPF or idiopathic pulmonary fibrosis (expanded using MESH terminology). MEDLINE (1948-September 2012) was the primary database used for search purposes. In addition, all available articles and abstracts referenced by the articles identified via literature search were included.Study Selection And Data ExtractionThe search was limited to English-language publications. All available clinical trials of pirfenidone pertinent to its pharmacology, pharmacokinetics, efficacy, and safety were included.Data SynthesisPirfenidone is the first agent specifically developed for the treatment of IPF. It has been approved for use in Europe and Japan, but not in the US. Although Phase 3 trials have shown pirfenidone to improve certain clinical (6-minute walk test) and functional (change in forced vital capacity) outcomes in patients with IPF, an independent benefit on either mortality or acute exacerbation rates has yet to be demonstrated. Until more definitive supportive data are available, international guidelines have recommended against using pirfenidone to treat most patients with IPF.ConclusionsAlthough pirfenidone appears to be an effective treatment for IPF, additional clinical trials are needed to better delineate its risk-benefit profile.

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