While epithelial cells of MEC and ductal cells of AdCC are positive for common epithelial markers (such as CK7 and CK 5/6) and p63 and p40 are expressed in all the intermediate and squamous cell component of MEC, myoepithelial cells of AdCC are usually positive for smooth muscle actin, vimentin, myosin, S-100, and for p63. This evidence concerns the gene KRT7 and adrenocortical carcinoma, hereditary.