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AC-17 - Fibrillar Segmental
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Found very infrequently in a routine serology diagnostic setting. Antigens recognized include ?-Actinin and Vinculin; specific immunoassays for these autoantibodies are currently not commercially available
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In SLE and lupus nephritis cross-reactive anti-?-actinin and anti-dsDNA autoantibodies have been reported as pathogenic
Reported as part of the anti-cell membrane antibody spectrum that characterize patients with lupus nephritis; also reported as a biomarker to differentiate patients with lupus nephritis from those without renal involvement
"Reported with relatively high prevalence (~40%) in patients with AIH type 1 and associated with more severe disease, clinical and histological disease activity, predictor of therapeutic response, and double positivity with anti-ssDNA antibodies Autoantibodies to vinculin: "
Reported in 2 of 31 patients with chronic inflammatory demyelinating neuropathy
Most reports describe autoantibodies directly binding to specific antigens (i.e. antigen-specific immunoassays) and none actually shows correlations with the AC-17 pattern as such; specific immunoassays for these autoantibodies are currently not commercially available.