Factors Associated with Interstitial Lung Disease in Patients with Polymyositis and Dermatomyositis: A Systematic Review and Meta-AnalysisReportar como inadecuado

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Interstitial lung disease ILD is an extramuscular manifestation that results in increased morbidity and mortality from polymyositis PM and dermatomyositis DM. The aim of this study was to systematically evaluate risk factors associated with the development of ILD in PM-DM.


Observational studies were identified from searching PubMed, Medline, Embase, and the Cochrane Library. Pooled odds ratios ORs or standardized mean differences SMDs and corresponding 95% confidence intervals CIs were obtained for the relationships between risk factors and ILD in PM-DM using either fixed- or random-effects models, whichever were appropriate. Heterogeneity tests, sensitivity analyses, and publication bias assessments were also performed.


Twenty-three studies were selected for a meta-analysis that included 834 patients and 1245 control subjects. Risk factors that may have increased the risk of developing ILD in PM-DM patients included older age at diagnosis SMD, 0.35; 95% CI, 0.18–0.52; P < 0.0001, arthritis-arthralgia OR, 3.17; 95% CI, 1.99–5.04; P < 0.00001, fever OR, 2.31; 95% CI, 1.42–3.76; P = 0.0007, presence of anti-Jo-1 antibodies OR, 3.34; 95% CI, 2.16–5.16; P < 0.00001, elevated erythrocyte sedimentation rate ESR; SMD, 0.48; 95% CI, 0.32–0.64; P < 0.00001, presence of anti-MDA5 antibodies OR, 18.26; 95% CI, 9.66–34.51; P < 0.00001, and elevated C-reactive protein level CRP; OR, 3.50; 95% CI, 1.48–8.28; P = 0.004. Meanwhile, malignancy OR, 0.36; 95% CI, 0.18–0.72; P = 0.004 reduced the risk of developing ILD in PM-DM patients.


Our meta-analysis results suggest that the association between PM-DM and ILD may be due to such risk factors as older age at diagnosis, arthritis-arthralgia, fever, presence of anti-Jo-1 antibodies, elevated ESR, presence of anti-MDA5 antibodies, and elevated CRP level, while malignancy was associated with a reduced risk of developing ILD. Thus, these variables may be used to guide screening processes for ILD in patients with PM-DM.

Autor: Li Zhang, Guoqin Wu, Di Gao, Guijian Liu, Lin Pan, Liyan Ni, Zheng Li, Qiang Wang

Fuente: http://plos.srce.hr/


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