MYB and adrenal cortex carcinoma: ACC and epithelial-myoepithelial carcinoma have 2 distinct types of tumor cells, with glandular epithelial and myoepithelial differentiation.[13] Translocation of the MYB gene is also a useful diagnostic biomarker of ACC.[15] MEC is an epithelial tumor composed of epithelial, intermediate, and mucous cells.[16] Translocation of the MAML2 gene is a useful diagnostic biomarker of MEC.[17]