CpG Island Organization and Allelic Expression
| Gene | Expressed allele[i] | CpG island 1 location[ii] | CpG island 2 location | CpG island 3 location[iii] |
| Rl23mrp | Biallelic | Exon 1 (−100 to +300) | None | None |
| H19 | Maternal | Upstream (−600 to −250) | Intron 1 (+800 to +1300) | Downstream (+6500 to +6700) |
| Igf2 | Paternal | Upstream (−1960 to −2760) | Exon 1 (+500 to +1800) | Intron 2 (+2400 to +2800) |
| Ins | Biallelic | None | None | None |
| Th | Biallelic | None | None | None |
| Mash2 | Maternal | Exon 1 (−500 to +900) | Downstream (+1100 to +1600) | None |
| Tssc6 | Biallelic | Intron 7 (+10500 to +10900) | None | None |
| Tapa1 | Unknown | Upstream (−1500 to −600) | None | None |
| Tssc4 | Biallelic | Exon 1,2 (−300 to +400) | None | None |
| Trpc5l | Biallelic | None | None | None |
| Kvlqt1 | Maternal | Exon 1 (−400 to +300) | Intron 10 | Intron 15 |
| Lit1 | Paternal | Upstream (−1600 to −1200) | None | None |
| p57KIP2 | Maternal | Upstream (−2300 to −2700) | Exons 1,2,3 | None |
| Msuit | Maternal | Upstream (−1000 to −3500) | Downstream (+2000 to +2800) | None |
| Tssc5 | Maternal | Upstream (−1100 to −900) | Intron 6 | None |
| Tssc3 | Maternal | Upstream (−1300 to −1100) | Exon 1 (−500 to +300) | None |
| Nap1l4 | Biallelic | None | None | None |
[i] Considered imprinted if imprinted in the predominantly expressing tissues at some stage of development.
[ii] Locations are calculated with respect to the start site of transcription.
[iii] More than 3 CpG islands are not listed.