KLF4 and neoplasm: Altogether, a significantly decreased expression of MCT1 (p: 0.025) and a significantly increased expression of GFAP (p: 0.010), β-catenin (p: 0.039), KLF4 (p: 0.035) and OCT4 (p: 0.026) was detectable at the edge of the tumor compared with the center.