CKAP2 and neoplasm: Moreover, the mean tumor weight at the end of the experiment was markedly lower in the pLKO.1-EGFP-CKAP2 shRNA group (3.18 ± 0.37 g) compared to the pLKO.1-EGFP-shNC group (1.23 ± 0.47 g) (Fig. 3D).