Expression of other myoepithelial markers including GFAP, p63, ASMA, Calponin are seen in a subset of tumors (15-50 %).9 Cytogenetically myoepithelial tumors are characterized by EWSR1 gene rearrangements with variety of different fusion partners including EWSR1-PBX1 fusion [t(1;22)(q23;q12)] and EWSR1-ZNF444 fusion [t(19;22)(q13;q12)]. This evidence concerns the gene ACTA1 and myoepithelial tumor.