KIT and platelet-derived growth factor receptor α wild-type gastrointestinal stromal tumor associated with neurofibromatosis type 1: Two case reports

Figure 5 Molecular analysis of gastrointestinal stromal tumor. A: Detection of KIT/platelet-derived growth factor receptor α (PDGFRA) mutations by Sanger sequencing. None of the six tumors from two patients had a KIT/PDGFRA mutation; B: Detection of BRAFV600E mutation by real-time polymerase chain reaction. None of the six tumors from two patients had a BRAFV600E mutation.