While imprinted genes have been linked to a variety of diseases,
until now only several dozen have been identified. But a new report reveals a map of 156 new likely imprinted genes scattered throughout the human genome (Luedi PP et al. Genome Res.
Unlike the majority of genes—in which both the maternally and paternally inherited copies are active—in imprinted genes,
one of these copies is silenced.
Hampton T. Scientists Build Map of Imprinted Genes. JAMA. 2008;299(2):161. doi:10.1001/jama.2007.62