Abstract

Purpose. – Auto-immunity against Ku nuclear antigens is rare and clinical meaning remains badly estimated. Our study is for purposes: to appreciate the prévalence of antibodies anti-Ku within the framework of the search for antinuclear antibodies and to clarify clinical and biological relations associated to this auto-immunity. Methods. – A retrospective study of a series of 10 000 searches for antinuclear antibodies studies the prévalence of the auto-immunity anti-Ku and a retrospective analysis of the data found at the patients bearers of an anti-Ku identifies clinical and biological signs associated with this antibody. Results. – Prévalence anti-Ku is low (1/3493 case of antinuclear antibodies) and association is possible with in a myositic process through variable auto-immune contexts (overlap syndrome) of relative good preview. Conclusion. – Auto-immunity anti-Ku is so characterized with its weak prévalence, a possible observation during different auto-immune diseases with an obvious frequency of the overlap syndrome often concerning a process myositic. Finally a weak évolutivité seems to characterize the auto-immune diseases of the patients with anti-Ku antibodies.

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