GP2 and neoplasm: Pre-vaccination with KLH–GP2–P4 and KLH–GP2 also significantly contributed to prolonging the overall survival of tumor-bearing mice compared to the negative control group (p < 0.0001), as shown in Figure 6B. The life prolongation indices (MST, TTE, TGD (%) and ILS (%) were generally enhanced in mice vaccinated with KLH–GP2–P4 as opposed to the KLH–GP2-vaccinated group (Table 1).