Kaplan-Meier analysis of overall survival in breast patients based on PTOV1 expression. (A) OS of all patients with high PTOV1 expression versus low PTOV1 expression. (B) OS rate for patients with high PTOV1 expression versus patients with low PTOV1 expression in patients with T1-T2 grade tumors. The overall survival of patients of high PTOV1 expression and low PTOV1 expression compared between patients with early stage disease (stage I–II) (C) and late stage disease (stage III–IV) (D) and between patients with negative metastasis disease (E) and between patients with positive lymph node metastasis (F). P values were calculated by using log-rank tests.