Gpr1 was reported to show imprinted paternal expression in E18.5 and adult kidney, but biallelic
expression in brain, lung, liver, heart, spleen, testis and placenta (Hiura
H et al. 2010). The number of animals tested is not provided. In response the presence of
duplicate panels in Figures 2, 4, 6 and S3 the editors of NAR have issued an "Expression of concern"
(Expression of concern 2014) and revised
figures have been published.
A paternally methylated DMR is located between Gpr1 and Zdbf2 (Hiura
H et al. 2010).