PDGFRB and cancer: Among the Set A genes that could be targeted by a drug, are worth mentioning: (i) the inhibitor of Pdgfd (ligand for Pdgfrb), since the activation of the PDGFR pathway has been shown to activate the Cxcl12 receptor; (ii) the possibility to enhance the activity of the tumor suppressor phosphatidylinositol 3-kinase-related kinase Smg1, whose ablation favors inflammation and cancer development.