Real-time PCR was used to examine the expression of FOXM1 (Forkhead box M1) in 40 esophageal squamous cell carcinoma (ESCC) tissues, and the adjacent normal tissues. Immunohistochemistry was used to examine the expression of FOXM1 protein in 94 ESCC tissues, and to analyze the relationship between ESCC and clinic pathologic. A small interfering RNA targeting FOXM1 was designed to silence the endogenous FOXM1 expression of ECA-109 and TE-1 cells. The effect of FOXM1 on radiation sensitive in esophageal squamous cell was observed by immunofluores...