Klrb1f (killer cell lectin-like receptor subfamily) is one of ten genes reported by Brideau et
al to be imprinted and maternally expressed in the mouse placenta. No evidence of imprinting was
detected in E17.5 brain from reciprocal crosses (Brideau
CM et al, 2010).
However, Okae H et al (2012) reported
negligible expression of Klrb1f gene name by qPCR and whole transcriptome sequencing in E13.5
placentas. They suggest that this gene is not imprinted. This is concordant with the caution from Proudhon and Bourc'his (2010) that maternal contamination of placental tissues may
cause apparent imprinted maternal expression.