SSTR5 and neoplasm: SSTR1 was expressed in three (75%), SSTR3 in two (50%), SSTR4 in 0% and SSTR5 in 0% of the GLP-1R-negative tumours, compared to eleven (23%) (p = 0.055), fifteen (31%) (p = 0.589), 0% and three (6%) (p = 1.000) in GLP-1R-positive tumours, respectively.