SSTR2 and neoplasm: However, a recent study evaluating the expression of SSTR2 and SSTR5 in 76 tumour samples from patients with HBV-related operable HCC, found that, in this particular subset of patients, the mean survival time was longer in the subgroup of patients expressing high SSTR2 and SSTR5, and that, at multivariate Cox analysis, tumour expression levels of SSTR2 were an independent prognostic marker[161].