EPCAM and neoplasm: After five weeks post cell inoculation, in PC-3-EpCAM-KD group, tumour volume was 106.4 ± 9.5 mm3, while in PC-3-EpCAM-scr group, tumour volume was 183.6 ± 18.4 mm3 (Mean ± SD, Fig. 2a, P < 0.001).