SMAD4 and cancer: There were 3.75% of the interactors which were common to both pathways of cancer and CRC, namely, PIK3CD, AKT1, AKT3, BAX, BIRC5, GSK3B, MAPK1, MYC, PIK3CG, PIK3R2, RAC1, RAF1, RHOA, SMAD2, SMAD4, TGFB1, and TGFBR1.