AFP and neoplasm: According to the results of the univariate analysis, the histological subtype (p = 0.023), presence of retroperitoneal lymph node metastasis (p = 0.034), AFP (p < 0.001) and beta-HCG elevation before HDCT (p = 0.039), tumour response after HDCT (p = 0.02), presence of CR (p = 0.003), objective response rate (ORR) (p = 0.003), and DCR (p = 0.004) were found to be factors influencing PFS.