Fig. 1. PVT1 expression was elevated in breast cancer tissues. Expression analysis of PVT1 in breast cancer tissues (n = 40) and adjacent normal tissues (A), different clinical pathological stages (n(I + II) = 15, n(III + IV) = 25) (B), non-metastatic (n = 22) and metastatic breast cancer tissues (n = 18) (C). (D) Kaplan–Meier analysis of overall survival according to PVT1 expression of clinical breast cancer samples. *P < 0.05.