PPI network for the FLI1-SMAD4 axis. Fli1 interacts with 2 subsets of proteins: 1 group lacks interaction with SMAD4 and the other has PPI with SMAD4 through 1 or 2 intermediaries. Proteins not studied on the RPPA are in blue, those with positive correlation are in red, and those with negative correlation are in green. Edges between components that did not interact with FLI1 and SMAD4 have been removed for clarity.