TNFSF4 and systemic lupus erythematosus: Thus, our purpose was to discover if TNFSF4 and IKZF1 mutations left the Egyptian population genetically predisposed to SLE.<h4>Methods</h4>Using real-time polymerase chain reaction (RT-PCR), polymorphism analysis of the TNFSF4 rs1234315 C/T and IKZF1 rs11980379 C/T genes was performed on extracted DNA from JSLE patients and healthy controls.<h4>Results</h4>TNFSF4 frequencies (rs1234315 T allele, CT, TT genotypes, dominant and recessive models) were substantially associated with a higher incidence of JSLE (<i>p</i> < 0.05) compared to healthy controls.