Summary
We studied the prevalence and clinical significance of antiphospholipid antibodies (ab) in 28 patients affected with well-defined mixed connective tissue disease (MCTD). Forty-two patients affected with systemic lupus erythematosus (SLE) and 60 healthy subjects were also evaluated, as controls. In MCTD the prevalence of anticardiolipin (aCL) ab was: IgG high level 17.8% (p<0.01 versus healthy controls), IgG low level 7.1% and IgM high level 7.1%. No patients had low level of aCL IgM, lupus anticoagulant or false positive VDRL. The aCL profile was similar to that found in SLE patients, but in SLE all prevalences were higher than in MCTD. Furthermore, in MCTD patients the aCL ab were correlated with thrombocytopenia but not with recurrent thrombosis and/or abortions.
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Doria, A., Ruffatti, A., Calligaro, A. et al. Antiphospholipid antibodies in mixed connective tissue disease. Clin Rheumatol 11, 48–50 (1992). https://doi.org/10.1007/BF02207083
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DOI: https://doi.org/10.1007/BF02207083