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  • Title: Antiendothelial cell antibodies in inflammatory myopathies: distribution among clinical and serologic groups and association with interstitial lung disease.
    Author: D'Cruz D, Keser G, Khamashta MA, Direskeneli H, Targoff IN, Miller F, Hughes GR.
    Journal: J Rheumatol; 2000 Jan; 27(1):161-4. PubMed ID: 10648033.
    Abstract:
    OBJECTIVE: To determine the prevalence and associations of antiendothelial cell antibodies (AECA) in a well characterized cohort of patients with idiopathic inflammatory myopathies (IIM). METHODS: Clinical characteristics, AECA, and myositis-specific autoantibodies were assessed by standard methods in 56 subjects with IIM. RESULTS: AECA were found in 20/56 patients with IIM, were seen in all the major clinical and serologic IIM groups, and were found in 10/15 patients with interstitial lung disease (ILD) (chi squared 6.5, p<0.01 with Yates' correction, relative risk 2.7, specificity 86% and sensitivity 50%). Antisynthetase antibodies, also associated with ILD as described (chi squared = 26.5, p<0.001 with Yates' correction, relative risk 8.7, specificity 95%, sensitivity 77%), did not correlate with the presence of AECA. CONCLUSION: AECA appear to be present in all forms of IIM and are markers for ILD that are independent of anti-synthetase autoantibodies. AECA may be a useful serologic marker for ILD in IIM.
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