Shared Autoimmunity is a rather loose term. It variously refers to autoantibodies, symptoms, or presence of autoimmune diseases within the same patient or within several or more members of the same family.
Immunogenetics of systemic sclerosis (SSc): Defining heritability, functional variants and shared-autoimmunity pathways. Future research will be successful in understanding the relevant altered pathways in SSc and in identifying new biomarkers and therapeutic targets for the disease. PubMed, J Autoimmun, 2015 Nov;64:53-65. (Also see Causes of Scleroderma: Genetics)
Overlap syndromes in the context of shared autoimmunity. The coexistence of autoimmune rheumatic diseases may be partially explained by the interplay of environmental factors with genes that predispose to autoimmunity in general and to manifestations of specific diseases. This is part of the concept of Shared Autoimmunity. PubMed, Autoimmunity. (Also see Causes of Scleroderma: Genetics)
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