PDGFRA and gastrointestinal stromal tumor: In gastrointestinal tract cancers, NTRK fusions are relatively highly detected in gastrointestinal stromal tumor (GIST), primarily in cases without KIT, PDGFRA, or RAS mutations, and in colorectal cancer, most frequently in Microsatellite Instability (MSI)-high tumors [1,6,7].