Efficacy of Interferon(IFN)-gamma in Idiopathic Pulmonary Fibrosis.

Park, Joo Hun; Oh, Yeon Mok; Shim, Tae Sun; Lim, Chae Man; Koh, Younsuck; Lee, Sang Do; Kim, Woo Sung; Kim, Won Dong; Kim, Dong Soon

doi:2004.56.6.611

Tuberc Respir Dis > Volume 56(6); 2004 > Article

Original Article

Tuberculosis and Respiratory Diseases 2004;56(6):611-618.
DOI: https://doi.org/10.4046/trd.2004.56.6.611 Published online June 1, 2004.

Efficacy of Interferon(IFN)-gamma in Idiopathic Pulmonary Fibrosis.

Joo Hun Park, Yeon Mok Oh, Tae Sun Shim, Chae Man Lim, Younsuck Koh, Sang Do Lee, Woo Sung Kim, Won Dong Kim, Dong Soon Kim

Division of Pulmonary and Critical Care Medicine, University of Ulsan, College of Medicine, Asan Medical Center, Korea. dskim@amc.seoul.kr

Abstract

BACKGROUND
Idiopathic pulmonary fibrosis(IPF), a subtype of IIP(idiopathic interstitial pneumonia), is a fatal disease with a 3-5 year median survival. Many attempts at treating this condition have failed to demonstrate a survival benefit in IPF. Recently Ziesche et al12 reported the efficacy of IFN-gamma for treating IPF but there is still some controversy. The aim of this study was to determine the efficacy of IFN-gamma in patients with advanced IPF who had not been responsive to steroid and cytotoxic agents. METHOD: Nine patients with advanced IPF(age: 55.4+/-15.3 years, Male: Female=8:1) were enrolled. One year treatment regime with 2 million IU of IFN-gamma administered subcutaneously three times a week, and low dose prednisolone(10-30 mg/d) was also used. In the case of a definite aggravation and serious side effects, the IFN-gamma was discontinued. During the IFN-gamma trial, a pulmonary function test and chest radiography were checked every three month throughout the study. RESULT: 1) Among 9 patients, only 4 patients were able to complete the 12 month treatment with IFN-gamma, and 5 patients died during the treatment period. 2) No improvement either in the respiratory symptoms or pulmonary functions were observed any of the patients, even in those who completed the 12 months trial of IFN-gamma, 3) At the time of IFN-gamma trial, the survivors who finished the IFN-gamma treatment for 12 months had a higher oxygen level(81.3+/-2.8 vs. 67.4+/-8.4, P=0.024) and a better pulmonary function(FVC: 61.3+/-5.1 % predicted vs. 45.7+/-12.3%, P=0.048, and DLco: 45.0+/-5.0% predicted vs. 30.8+/-11.2%, P=0.048) than the non-survivors. CONCLUSION: Our data suggested that IFN-gamma therapy was not effective in the patients with advanced IPF refractory compared with other therapeutic agents. Furthermore, these results suggest that severe impairment of the pulmonary function and hypoxemia during the IFN-gamma therapy requires special attention.

Key Words: Idiopathic pulmonary fibrosis, interferon-gamma, Pulmonary function

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