Abstract:Objective?? To investigate the value of serum vascular endothelial growth factor (VEGF), monocyte chemoattractant protein-1 (MCP-1) combined with long non coding RNA X-inactive specific transcript (LncRNA XIST) in evaluating the prognosis of bladder cancer patients. Methods?? Fifty-two patients with bladder cancer (observation group) and 43 healthy individuals (control group) in our hospital from June 218 to June 2019 were enrolled. Serum levels of VEGF, MCP-1 and LncRNA XIST were detected, and the correlation of those indexes was analyzed. Patients were followed up for 1 year, and the postoperative 6-month and 1-year survival rates were recorded.? The threshold values of serum VEGF, MCP-1 and LncRNA XIST in predicting the survival status were calculated using receiver operating characteristic (ROC) curve, thereafter, observation group was further divided into VEGF, MCP-1, and LncRNA XIST high and low expression groups, then the survival status of each subgroup was also analyzed.Results?? The levels of serum VEGF, MCP-1 and LncRNA XIST in patients with bladder cancer were significantly higher than those of healthy individuals (P<0.01). There was a significant positive correlation in serum VEGF, MCP-1 and LncRNA XIST expression levels within bladder cancer patients (P<0.05). VEGF expression was related to tumor maximum diameter, T stage, differentiation degree, tumor grade, local invasion depth, distant metastasis, and lymphatic metastasis in patients with bladder cancer (P<0.05); MCP-1 expression was related to T stage, differentiation degree, tumor grade and local invasion depth in patients with bladder cancer (P<0.05); LncRNA XIST expression was related to T stage, differentiation degree, tumor grade, local invasion depth, and lymphatic metastasis in patients with bladder cancer (P<0.05). The value of serum VEGF, MCP-1 combined with LncRNA XIST detection in the clinical diagnosis and prognosis assessment of bladder cancer was higher than that of single or paired detection (AUC=0.909, 95%CI:0.850~0.968;AUC=0.682, 95%CI:0.538~0.826). The 1-year survival rates of bladder cancer patients in VEGF, MCP-1, and LncRNA XIST high expression groups were significantly lower than those in low expression groups (P<0.05).Conclusions?? Detection of serum VEGF, MCP-1 combined with LncRNA XIST has high accuracy in the diagnosis of bladder cancer, which is of great value in assessing the prognosis.