miR-132; miR-221; miR-222; miR-504High miR-132 expression level associated with gastric PDGFRA-mutated GIST cf. gastric KIT-mutated GISTHigh miR-221 and miR-222 expression levels associated with wild-type GIST cf. GIST with KIT or PDGFRA mutationHigh miR-504 expression associated with gastric GIST with KIT mutation cf. intestinal GIST with KIT mutation. The gene discussed is PDGFRA; the disease is gastrointestinal stromal tumor.