GLP1R and pancreatic insulinoma: GLP-1R is overexpressed in 93% of the cases, consequently GLP-1 PET/CT improves insulinoma detectability vastly; however, overexpression is only present in 36% of patients with metastases and/or malignant lesions, making the method less informative in the rare but more malevolent malignant cases (41–43).