KLF5 and infection: With the aim of confirming the involvement of KLF5 in the antitumor activity of anti-CD147 antibodies, the in vivo antitumor activity of h4#147D was assessed using xenograft mice inoculated with either MIA-PaCa-2 KLF5 (MIA PaCa-2 cells expressing KLF5 generated by infection with a retrovirus inducing KLF5) or mock-infected cells, MIA PaCa-2 mock.