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Long-Term Treatment With Azathioprine and Mycophenolate Mofetil for Myositis-Related Interstitial Lung Disease.

ABSTRACT: BACKGROUND:The efficacy of azathioprine (AZA) and mycophenolate mofetil (MMF) for interstitial lung disease (ILD) has been described, but mainly in connective tissue disease-associated ILD. The objective of this study was to evaluate the effect of AZA and MMF on lung function and prednisone dose in myositis-related ILD (M-ILD). METHODS:In this retrospective study, patients with M-ILD seen at Johns Hopkins and treated with AZA or MMF and no other steroid-sparing agents were included. Linear mixed-effects models adjusted for sex, age, antisynthetase antibody, and smoking status were used to compare the change in FVC % predicted, diffusing capacity of the lungs for carbon monoxide (Dlco) % predicted, and prednisone dose. RESULTS:Sixty-six patients with M-ILD were treated with AZA and 44 with MMF. At treatment initiation, mean FVC % predicted and Dlco % predicted were significantly lower in the AZA group than in the MMF group. In both groups, FVC % predicted improved and the prednisone dose was reduced over 2 to 5 years; however, for Dlco % predicted, only the AZA group improved. The adjusted model showed no significant difference in posttreatment FVC % predicted or Dlco % predicted between groups (mean difference of 1.9 and -8.2, respectively), but a 6.6-mg lower dose of prednisone at 36 months in the AZA group. Adverse events were more frequent with AZA than MMF (33.3% vs 13.6%; P = .04). CONCLUSIONS:In M-ILD, AZA treatment was associated with improved FVC % predicted and Dlco % predicted, and lower prednisone dose. Patients treated with MMF had improved FVC % predicted and lower prednisone dose. After 36 months, patients treated with AZA received a lower prednisone dose than those treated with MMF.

SUBMITTER: Huapaya JA

PROVIDER: S-EPMC6945652 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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Long-Term Treatment With Azathioprine and Mycophenolate Mofetil for Myositis-Related Interstitial Lung Disease.

Huapaya Julio A JA Silhan Leann L Pinal-Fernandez Iago I Casal-Dominguez Maria M Johnson Cheilonda C Albayda Jemima J Paik Julie J JJ Sanyal Abanti A Mammen Andrew L AL Christopher-Stine Lisa L Danoff Sonye K SK

Chest 20190622 5

<h4>Background</h4>The efficacy of azathioprine (AZA) and mycophenolate mofetil (MMF) for interstitial lung disease (ILD) has been described, but mainly in connective tissue disease-associated ILD. The objective of this study was to evaluate the effect of AZA and MMF on lung function and prednisone dose in myositis-related ILD (M-ILD).<h4>Methods</h4>In this retrospective study, patients with M-ILD seen at Johns Hopkins and treated with AZA or MMF and no other steroid-sparing agents were include ...[more]

PMID: 31238042

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Project description:ObjectiveTo compare mycophenolate mofetil (MMF) with placebo for the treatment of systemic sclerosis (SSc)-related interstitial lung disease (ILD).MethodsWe included participants enrolled in the placebo arm of Scleroderma Lung Study (SLS) I and the MMF arm of SLS II. SLS I randomized participants to receive either oral cyclophosphamide (CYC) or placebo for 1 year, while SLS II randomized participants to receive either MMF for 2 years or oral CYC for 1 year followed by 1 year of placebo. Eligibility criteria for SLS I and SLS II were nearly identical. The primary outcome was % predicted forced vital capacity (FVC), and key secondary outcomes included % predicted diffusing capacity for carbon monoxide (DLco), the modified Rodnan skin thickness score (MRSS), and dyspnea. Joint models were created to evaluate the treatment effect on the course of these outcomes over 2 years.ResultsAt baseline, the MMF-treated group in SLS II (n = 69) and the placebo-treated group in SLS I (n = 79) had similar percentages of men and women and similar disease duration, SSc subtype, extent of skin disease, and % predicted FVC. MMF-treated patients in SLS II were slightly older (mean ± SD age 52.6 ± 9.7 years versus 48.1 ± 12.4 years; P = 0.0152) and had higher % predicted DLco (mean ± SD 54.0 ± 11.1 versus 46.2 ± 13.3; P = 0.0002) than placebo-treated patients in SLS I. After adjustment for baseline disease severity, treatment with MMF in comparison with placebo was associated with improved % predicted FVC (P < 0.0001), % predicted DLco (P < 0.0001), MRSS (P < 0.0001), and dyspnea (P = 0.0112) over 2 years.ConclusionAlthough there are inherent limitations in comparing participants from different trials, treatment with MMF was associated with improvements in physiologic outcomes and dyspnea compared with placebo, even after accounting for baseline disease severity. These results further substantiate the use of MMF for the treatment of SSc-related ILD.

Dataset Information

Long-Term Treatment With Azathioprine and Mycophenolate Mofetil for Myositis-Related Interstitial Lung Disease.

Publications

Long-Term Treatment With Azathioprine and Mycophenolate Mofetil for Myositis-Related Interstitial Lung Disease.

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