After five weeks post cell inoculation, in PC-3-EpCAM-KD group, tumour volume was 90.8 ± 11.3 mm3, while in PC-3-EpCAM-scr group, tumour volume was 129.7 ± 17.6 mm3 (Mean ± SD, Fig. 2d, P < 0.01). The gene discussed is EPCAM; the disease is neoplasm.