Meanwhile, we also detected a significant correlation between overexpression of UCA1 and poor prognosis of cancer patients in large specimen size subgroup (pooled HR = 1.68, 95% CI 1.41–2.00, p < 0.001) and small specimen size subgroup (pooled HR = 2.07, 95% CI 1.71–2.50, p < 0.001) with no evident heterogeneity (I2 = 0.0%, pH = 0.639 and I2 = 0.0%, pH = 0.979) respectively. Here, UCA1 is linked to cancer.