Objective To analyze the expression of early growth response 1(EGR1) gene in patients with systemic lupus erythematousus(SLE) and investigate the molecular mechanism of onset of SLE.Methods The expression of EGR1 gene,located in linkage site of SLE chromosome,in peripheral blood mononuclear cells(PBMCs) as well as T and B lymphocyte subsets of patients with SLE at active and resting stages were determined by real-time fluorescent quantitative PCR,using those of healthy persons as control.Results The △Ct val...