To investigate more effective therapeutic regimens, we first evaluated the cytotoxicity of INCB057643 in 8 MYC-driven (MYC-R or Mychigh) DLBCL cell lines, including 4 lines with Mut-TP53 (2 lines also had BCL2-R)...These cell lines were highly sensitive to INCB057643 treatment...They all showed increased apoptosis after INCB057643 treatment...