(v) IL-17A: Significantly higher IL-17A levels of 9,770 ± 616 pg/ml at 3 days and 39,402 ± 374 pg/ml at 7 days were secreted by SLE-PBMCs when compared to CD4+CD25+CD127low UCB-Tregs alone levels of 14 ± 1 pg/ml and 13 ± 2 pg/ml at the corresponding time points (p < 0.0001). This evidence concerns the gene CD4 and systemic lupus erythematosus.