IGF2 and neoplasm: The majority of studies selecting a priori candidate genes analysed imprinted regions, e.g., the maternally imprinted insulin-like growth factor 2 gene (IGF2) and the paternally imprinted H19 gene (coding for a tumor-suppressor long non-coding RNA), which have a common imprinting center at the 11p15 chromosomal region [70].