NPM1 and neoplasm: In tumor angiogenesis, NPM acts with different protein partners directly orchestrated by VEGF. For instance, the aberrant production of VEGF in transformed cells is reported to hyperactivate the Cyclin E/Cdk2 complex, which is responsible for the phosphorylation of NPM at serine-199 and centrosome overduplication because of the shuttling of NPM to the nucleus [33].