Figure 1

miR-655 expression in ESCC tissues and adjacent non-tumor tissues. (a) The relative expression levels of miR-655 in paired ESCC tissues and adjacent non-tumor tissues were determined by qRT-PCR. A statistically significant difference in expression levels (P < 0.05) was observed. (b) qRT-PCR results showing that miR-655 expression in the metastasis-positive group was notably lower than in the metastasis-free group (P < 0.05). (c) Kaplan–Meier curves of the clinical outcome for miR-655. Primary ESCCs with moderate to strong miR-655 expression (>0.39) had significantly better survival than did those with weak miR-655 expression (<0.39) (P < 0.05, log-rank test). T: tumor tissue (n = 34); N: adjacent non-tumor tissue (n = 34). ^*P < 0.05 compared to the control group.