RHOBTB3 (Rho-related BTB domain containing 3) was differentially methylated in placentas and showed
maternal methylation (Yuen RK et al,
2011). Monoallelic expression was detected in 3 of 4 informative placentas and in two of two
informative families, expression was shown to be from the expected parent (presumably paternal but
Metsula T et al (2014) showed strong
evidence of preferential paternal expression in the placentas in three informative families.
Given that the literature reports only 5 placentas that are informative for parent of origin
expression, it would be useful to see additional independent data.