Variables with P < 0.1, as confirmed by univariate analysis, are shown in Table 1, including age (≥40 or <40 years, P = 0.002), tumour size (P = 0.013), lymph node stage (P = 0.023), duration of TAM (P = 0.035), duration between completing chemotherapy and ovariectomy (P = 0.046), LH (P < 0.001), FSH (P < 0.001), E2 (P = 0.002) and ovarian cyst (P < 0.001). This evidence concerns the gene PLOD1 and Ovarian cyst.