1.1 Imatinib is not recommended for the adjuvant treatment of gastrointestinal stromal tumours (GISTs) after surgery.
1.2 People currently receiving imatinib for the adjuvant treatment of gastrointestinal stromal tumours after surgery should have the option to continue treatment until they and their clinician consider it appropriate to stop.
https://www.nice.org.uk/guidance/TA196