The expression of p27 was at lower level in 54.8% tumour tissues as compared to the non-tumour tissues (17/31) (Fig. 5g), and a significantly inverse correlation was observed between UCA1 and p27 levels (R2 = 0.1126, P = 0.015, Wilcoxon’s signed-rank test, Fig. 5h). This evidence concerns the gene CDKN1B and neoplasm.