The relationship between CCDC26 and c-KIT. A. Western blot determination of c-KIT expression levels following RNA pull-down assay in CCDC26 RNA group (Target), control RNA group (Untreated), and blank group (None). (L, total protein; FT, flow-through; E, eluate). B, C. The effect of CCDC26 siRNA on c-KIT mRNA expression in GIST cells; GAPDH was the internal control (**P<0.01, ***P<0.001).