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Published byJérémie Fradette Modified over 5 years ago
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Positivity rate for antibodies to double-stranded DNA (anti-dsDNA), low complement, high complement C4 activation products (CBCAPS) and two-tiered methodology stratified by disease activity score. Positivity rate for antibodies to double-stranded DNA (anti-dsDNA), low complement, high complement C4 activation products (CBCAPS) and two-tiered methodology stratified by disease activity score. Disease activity was determined by using the non-serological Systemic Lupus Erythematosus Disease Activity Index SELENA Modification (SELENA-SLEDAI) score (without anti-dsDNA and low complement). Anti-dsDNA positivity cut-off was at 301 units, low complement corresponds to reduced C3 or C4, high CBCAPS corresponds to EC4d>14 net mean fluorescence intensity (MFI) or BC4d>60 net MFI. The number in each of the non-serological SELENA-SLEDAI category is given. Chaim Putterman et al. Lupus Sci Med 2014;1:e000056 ©2014 by Lupus Foundation of America
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