Lupus Susceptibility Genes on Human Chromosome 1

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Abstract
During the past five years, there has been an intense interest in studying candidate susceptibility genes for systemic lupus erythematosus (SLE). Many such studies have been focused on candidates located on chromosome 1, demonstrating association of certain genetic variants with SLE. Some of the tested candidate genes were chosen because they encode molecules with relevant immunological functions that may play a role in the pathogenesis of SLE. More recently, the identification of genomic segments linked to SLE has suggested novel positional candidate genes. Thus far, there is considerable evidence supporting that multiple genes on this chromosome contribute to the development and expression of SLE. This review highlights the genetic loci located on chromosome 1 that have recently been associated with SLE. These include loci encoding the tumor necrosis factor receptor 2 (TNFR2), complement component Clq, Fc7 receptors, T cell receptor ζ chain, interleukin-10 (IL-10), poly (ADP-ribose) polymerase (PARP), and HRES-1.