Pirfenidone in chronic hypersensitivity pneumonitis: a real-life experience

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Sho Shibata
Haruhiko Furusawa
Naohiko Inase

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Abstract

Background: Pirfenidone is an antifibrotic drug used for the treatment of idiopathic pulmonary fibrosis. Objectives: The aim of this study was to evaluate the efficacy of pirfenidone in patients with chronic hypersensitivity pneumonitis (HP). Methods: Twenty-three patients with chronic HP treated with pirfenidone were enrolled in this study based on a retrospective medical record review. Results: The change in vital capacity (VC) in the 6 months after the start of treatment (-152±56.1 ml) was significantly improved compared with that in the 6 months before treatment (-292±77.8 ml, p=0.047). No patients discontinued the treatment with adverse events. Conclusions: These results demonstrate that pirfenidone may reduce the decline of VC in patients with chronic HP without eliciting significant adverse events.

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