IGF2 and Wilms tumor: Aberrant imprinting of the Insulin-like growth factor 2 (IGF2) gene plays a role in the pathogenesis of the overgrowth disorder Beckwith-Wiedemann syndrome (BWS, OMIM#130650), the growth-restriction condition Silver-Russell syndrome (SRS, OMIM#180860), as well as various human cancers including Wilms tumour, rhabdomyosarcoma, hepatoblastoma, colorectal and breast carcinomas [1]–[6].