The tumor weight decreased to 73.8 ± 5.2% and 31.7 ± 8.6% in PTK7-knockdown tumors with PTK7-KD-6433 and PTK7-KD-6434, respectively (Figure 5B), compared to the tumor weight (0.73 ± 0.08 g) of the mock control tumors. This evidence concerns the gene PTK7 and neoplasm.