Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
Tacrolimus and Steroid Treatment for Acute Exacerbation of Idiopathic Pulmonary Fibrosis
Nobuyuki HoritaMakiko AkahaneYukinori OkadaYosuke KobayashiTakahiko AraiIzuki AmanoTomoko TakezawaMasako ToYasuo To
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2011 Volume 50 Issue 3 Pages 189-195


Objective Acute exacerbation of idiopathic pulmonary fibrosis (AE-IPF) occurs during the chronic progressive course of idiopathic pulmonary fibrosis. Mortality is estimated to be >70%, because no effective treatment has been established. We evaluated the effectiveness of combination therapy of tacrolimus and methylprednisolone for AE-IPF.
Methods Patients of AE-IPF treated with methylprednisolone pulse therapy with or without tacrolimus (targeting 20 ng/mL) during the period between January 2001 and April 2010 were retrospectively reviewed. The primary endpoints were survival rate and duration. We also observed lactate dehydrogenase levels, partial pressure of arterial oxygen/fraction of inspired oxygen ratio (P/F ratio), KL-6, occurrence of re-exacerbation, and computed tomography score.
Results Fifteen Japanese patients [tacrolimus group aged 74.2±6.0 years old (n=5), non-tacrolimus group aged 75.1±12.8 years old (n=10)] were identified. Pre-treatment clinical parameters were not significantly different between the two groups. Four of 5 tacrolimus group patients and 1 of 10 non-tacrolimus group patients survived (p<0.05). The median survival durations were >92 days (tacrolimus group) and 38 days (non-tacrolimus group) (p<0.05). Lactate dehydrogenase levels and the P/F ratio were also significantly favorable in the tacrolimus group. KL-6 and CT score were not significantly different in both groups. Four re-acute exacerbations were observed only in the non-tacrolimus group.
Conclusion Combined tacrolimus and methylprednisolone pulse therapy mitigates AE-IPF, prevents re-acute exacerbation, and contributes to a better prognosis.

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© 2011 by The Japanese Society of Internal Medicine
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