GHRL and neoplasm: And thirdly, ROC curve analysis indicated that only the expression of In1-ghrelin and GHSR1b could discriminate between the different diagnostic groups according to follow-up outcome (tumor remission, stable disease, or progressive disease) and malignancy features (expression in primary tumors of patients that developed metastasis compared to those that did not develop metastasis), whereas GOAT expression could only discriminate between the diagnostic groups of clinical outcome of patients.