Abstract:
BACKGROUND: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. METHODS: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. RESULTS: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). CONCLUSION: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.
journal_name
Respir Resjournal_title
Respiratory researchauthors
Lee SH,Park MS,Kim SY,Kim DS,Kim YW,Chung MP,Uh ST,Park CS,Park SW,Jeong SH,Park YB,Lee HL,Shin JW,Lee EJ,Lee JH,Jegal Y,Lee HK,Kim YH,Song JW,Park JSdoi
10.1186/s12931-017-0686-7subject
Has Abstractpub_date
2017-12-06 00:00:00pages
204issue
1eissn
1465-9921issn
1465-993Xpii
10.1186/s12931-017-0686-7journal_volume
18pub_type
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