Increasing evidence indicates the presence of lncRNAs in various cell types. is an imprinting gene transcribed from the paternal chromosome. It is in antisense orientation to the imprinted， but maternally derived， gene， on which exerts its regulation in . Although is highly expressed in the heart， functions aside from imprinting remain unknown.

RNA， long noncoding，RNA， untranslated，gene expression，myocytes， cardiac，transcrip