In univariate analyses for OS, the histological subtype (p < 0.001), presence of retroperitoneal lymph node metastasis (p = 0.002), absence of liver metastasis (p = 0.02), IPFSG classification (p = 0.001), platinum sensitivity (p = 0.004), beta-HCG (p < 0.0001) and AFP elevation before HDCT (p = 0.003), tumour response after HDCT (p < 0.0001), presence of CR (p = 0.009), ORR (p < 0.0001), and DCR (p < 0.0001) were identified as factors influencing OS (Table 3). This evidence concerns the gene AFP and neoplasm.