The results showed that increased UCA1 expression was also significantly associated with poor DFS (HR = 2.65, 95% CI: 1.59–4.43, P = 0.000, univariate analysis; HR = 2.50, 95% CI: 1.62–3.86, P = 0.000, multivariate analysis) (Figures 4(a) and 4(b)), indicating that increased UCA1 expression was an indicator of early tumor recurrence in digestive system cancer patients. This evidence concerns the gene UCA1 and neoplasm.