Fig. 1: Algorithm indicating a sequential decision-making tool for molecular testing of newly diagnosed GIST.
From: Gastrointestinal stromal tumour (GIST): British Sarcoma Group clinical practice guidelines
Note that imatinib 800 mg for KIT exon 9 mutant GIST and avapritinib for PDGFR exon 18 D842V mutant GIST are not approved by NICE.
