SLC22A2 (solute carrier family 22 (organic cation transporter), member 2; OCT2) is reported to be
polymorphically imprinted. Among 18 term placenta samples, 5 showed
monoallelic expression and of these 4 were shown to be maternally expressed (Monk
D et al, 2006). SLC22A2 and IGF2R imprinting was concordant within samples: of four samples that
were informative for both genes, two showed maternally expression of both genes whereas in the two
other samples, both genes were biallelically expressed.
SLC22A2 (solute carrier family 22 (organic cation transporter), member 2) is imprinted in mice (Zwart
R et al, 2001).