Sfmbt2 (Scm-like with four mbt domains 2) was expressed from the paternal allele in placenta and
yolk sac (Wang Q et al, 2011). However,
the gene showed biallelic expression in brain. They also described a large block of miRNA in intron
10 which is absent in human, bovine and Peromyscus. Since Sfmbt2 is imprinted in mouse and rat only
they proposed that this miRNA block is driving imprinting of this gene.