PPP1R13L and colorectal carcinoma: Building on the in vitro and in vivo findings that the miR-124/iASPP axis regulates CRC cell proliferation via the inhibition of cell proliferation by TAp63 and the promotion of cell proliferation by ΔNp63, we hypothesized that p63 knockdown would result in negligible changes in cell proliferation; however, p63 knockdown significantly facilitated cell proliferation.