Allele-specific methylation and expression of AIM1 (absent in melanoma 1) has been detected in human
placenta (Das R et al, 2013). In two cases
the methylated allele was maternal and in four cases the allele-specific expression of the long
transcript (not the short transcript) was paternal.
Metsula T et al (2014) reported that four
informative placentas showed preferential paternal expression, confirming imprinting of this gene.