SP1 and Burkitt lymphoma: Previously, Elkon et al. [36] reported in silico identified transcriptional regulators associated with c-Myc activity in human Burkitt's lymphoma cells and this included overrepresentation of binding sites of the transcription factors ETF, SP1, Nrf-1, NF-Y, CREB, Egr-1, Elk-1, E2F and AhR/Arnt in c-Myc target genes.