Stratified analysis according to grade (well-moderate vs poorly differentiated) and stage (Figo I-II vs III-IV) revealed that the beneficial prognostic impact of KRAS mutation was only evident in tumours of low and intermediate differentiation grade (p = 0.023, Figure 2B) and tumours in a less advanced (FIGO I-II) clinical stage (p = 0.014, Figure 2D). The gene discussed is KRAS; the disease is neoplasm.