UCA1 and cholangiocarcinoma: In addition, In agreement with most of current studies, upregulation of UCA1 in CCA was not only linked with advanced tumor stage (P = 0.007), high lymph node invasion rates (P = 0.027), late TNM stage (P = 0.004), and postoperative relapse (P = 0.033), but also could act as an independent prognostic factor for patients with CCA (P = 0.014).