Up to 70% of GISTs are positive for CD34 and H-Caldesmon, 30% are positive for smooth muscle actin AML, less than 10% are positive for desmin, and less than 5% are positive for S100 protein 8, 9.
Hasta el 70% de los GIST son positivos para CD34 y H-Caldesmon, en el 30% lo son para actina de músculo liso AML, desmina en el 10% y en menos del 5% para proteína S100 8, 9.