Abstract
The incidence of many autoimmune diseases has for many years been known to be associated with certain HLA class II types. For example, 70% of rheumatoid arthritis (RA) patients type as DR4, compared with only 28% of the normal population. Similarly, 59% of multiple sclerosis (MS) patients express DR2, against only 26% of the normal population. Other autoimmune diseases, such as myasthenia gravis and juvenile diabetes, have also been shown to be associated with certain HLA class II types (Table 1). These associations are presumed to reflect the effect of particular class II gene products on an individual’s ability to respond immunologically to an exogenous pathogen, or alternatively on his ability to regulate his response to endogenous autoantigens. This ability to respond would in turn play an important role in the etiology or pathogenesis of the disease. However, the most puzzling feature of these analyses is the lack of absolute association of the disease with a particular class II type, i.e., why many individuals with other class II types and therefore different class II gene products also develop the disease. For example, 30% of individuals with RA do not express DR4, and 41% of individuals with MS do not express DR2.
This work was supported by grants from the National Institutes of Health
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Silver, J., Goyert, S.M. (1986). Epitopes Are the Functional Units of HLA Class II Molecules and Form the Molecular Basis for Disease Susceptibility. In: Solheim, B.G., Møller, E., Ferrone, S. (eds) HLA Class II Antigens. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-70367-6_3
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DOI: https://doi.org/10.1007/978-3-642-70367-6_3
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