The death percent of DPC4 gene expresses higher in stomach-intertines tumor,but there is no report in the expression and function of oral mucosal squmous cell carcinoma and precancer.

• DPC4基因的失活率在许多胃肠道肿瘤中表达较高，但在口腔粘膜鳞癌及癌前病变中的表达和作用还未见文献报道。