PVT1 and breast fibrocystic disease: In patients with benign breast disease, BCO40587 expression was positively correlated with BDNF (r = 0.67, P = 0.0003), HOTAIR (r = 0.6, P = 0.0019), CCAT2 (r = 0.52, P = 0.009), and PVT1 (r = 0.42, P = 0.44) expressions.