In this phase III non-inferiority trial, the aim is to evaluate whether metoclopramide and palonosetron prophylactic antemetic treatment are non-inferior to dexamethasone with regard to its efficacy to prevent delayed chemotherapy-induced nausea and vomiting (CINV) induced by non- anthracyclines plus cyclophosphamide (AC) based moderately emetogenic chemotherapy (MEC).