PKP2 and metastatic malignant neoplasm in the lymph nodes: Univariate and multivariate analysis showed that high PKP2 expression (HR = 3.117, 95% CI = 1.146–8.478, P = 0.026) and lymph node metastasis (HR = 3.682, 95% CI = 1.6–8.476, P = 0.002) were independent risk factors for prognosis of patients with ovarian cancer.