SOX4 and adrenal cortex carcinoma: Based on these results, the published ChIP-seq results showing that these promoters are occupied by Myb proteins in ACC tumors, and the tight correlation between MYB/MYBL1, EN1 and SOX4 RNA levels in ACC tumor samples, we conclude that EN1 and SOX4 are likely to be direct targets of regulation by Myb proteins in ACC tumors.