Intragenic deletions of the dystrophin-encoding and muscular dystrophy-associated DMD gene have been recently described in many common human mesenchymal tumors, including gastrointestinal stromal tumor (GIST), rhabdomyosarcoma (RMS) and leiomyosarcoma (LMS) which show myogenic differentiation [1]. This evidence concerns the gene DMD and gastrointestinal stromal tumor.