In this task, you are given an abstract of article. Your task is to generate title for this article. Preferred titles are under thirty words.
Q: The phenomenon of parental imprinting involves the preferential expression of one parental allele of a subset of chromosomal genes and has so far only been documented in the mouse. We show here, by exploiting sequence polymorphisms in exon nine of the human insulinlike growth factor 2 (IGF2) gene, that only the paternallyinherited allele is active in embryonic and extraembryonic cells from first trimester pregnancies. In addition, only the paternal allele is expressed in tissues from a patient who suffered from BeckwithWiedemann syndrome. Thus the parental imprinting of IGF2 appears to be evolutionarily conserved from mouse to man and has implications for the generation of the BeckwithWiedemann syndrome.
A:
IGF2 is parentally imprinted during human embryogenesis and in the BeckwithWiedemann syndrome