Similarly, the volume of xenograft tumor was monitored once every 5 days and the results showed than ZFAS1 silencing inhibited the growth speed or development of the SW620 cells in xenografts, nevertheless, no significant difference of the tumor volume were determined between shZFAS1+pcDH-DDX21 group and shNC group (Figure 7C), and the representative nude mice and all of the xenograft tumors exhibited in Figure 7D and 7E. This evidence concerns the gene ZFAS1 and neoplasm.