Title |
Factors affecting treatment outcome in patients with idiopathic nonspecific interstitial pneumonia: a nationwide cohort study
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Published in |
Respiratory Research, December 2017
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DOI | 10.1186/s12931-017-0686-7 |
Pubmed ID | |
Authors |
Sang Hoon Lee, Moo Suk Park, Song Yee Kim, Dong Soon Kim, Young Whan Kim, Man Pyo Chung, Soo Taek Uh, Choon Sik Park, Sung Woo Park, Sung Hwan Jeong, Yong Bum Park, Hong Lyeol Lee, Jong Wook Shin, Eun Joo Lee, Jin Hwa Lee, Yangin Jegal, Hyun Kyung Lee, Yong Hyun Kim, Jin Woo Song, Jong Sun Park |
Abstract |
The effects of corticosteroid-based therapy in patients with idiopathic nonspecific interstitial pneumonia (iNSIP), and factors affecting treatment outcome, are not fully understood. We aimed to investigate the long-term treatment response and factors affecting the treatment outcome in iNSIP patients from a multi-center study in Korea. The Korean interstitial lung disease (ILD) Study Group surveyed ILD patients from 2003 to 2007. Patients were divided into two groups to compare the treatment response: response group (forced vital capacity (FVC) improves ≥10% after 1 year) and non-response group (FVC <10%). Factors affecting treatment response were evaluated by multivariate logistic regression analysis. A total of 261 patients with iNSIP were enrolled, and 95 patients were followed-up for more than 1 year. Corticosteroid treatment was performed in 86 patients. The treatment group showed a significant improvement in lung function after 1-year: FVC, 10.0%; forced expiratory volume (FEV1), 9.8%; diffusing capacity of the lung for carbon monoxide (DLco), 8.4% (p < 0.001). Sero-negative anti-nuclear antibody (ANA) was significantly related with lung function improvement. Sero-positivity ANA was significantly lower in the response group (p = 0.013), compared to that in the non-response group. A shorter duration of respiratory symptoms at diagnosis was significantly associated with a good response to treatment (p = 0.018). Treatment with corticosteroids and/or immunosuppressants improved lung function in iNSIP patients, which was more pronounced in sero-negative ANA and shorter symptom duration patients. These findings suggest that early treatment should be considered in iNSIP patients, even in an early disease stage. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United Kingdom | 3 | 33% |
Israel | 1 | 11% |
Venezuela, Bolivarian Republic of | 1 | 11% |
Unknown | 4 | 44% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 7 | 78% |
Practitioners (doctors, other healthcare professionals) | 2 | 22% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 39 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Other | 6 | 15% |
Student > Master | 5 | 13% |
Researcher | 4 | 10% |
Student > Doctoral Student | 3 | 8% |
Student > Ph. D. Student | 3 | 8% |
Other | 4 | 10% |
Unknown | 14 | 36% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 16 | 41% |
Nursing and Health Professions | 2 | 5% |
Immunology and Microbiology | 2 | 5% |
Agricultural and Biological Sciences | 2 | 5% |
Unknown | 17 | 44% |