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H19 gene
URL of this page: https://medlineplus.gov/genetics/gene/h19/

H19 gene

H19 imprinted maternally expressed transcript

Normal Function

The H19 gene provides instructions for making a molecule called a noncoding RNA. (RNA is a chemical cousin of DNA.) Unlike many genes, the H19 gene does not contain instructions for making a protein. The function of the noncoding RNA produced from the gene is unknown, but researchers believe that it may act as a tumor suppressor, keeping cells from growing and dividing too fast or in an uncontrolled way. The H19 gene is highly active in various tissues before birth and appears to play an important role in early development.

People inherit one copy of most genes from their mother and one copy from their father. Both copies are typically active, or "turned on," in cells. However, the activity of the H19 gene depends on which parent it was inherited from. Only the copy inherited from a person's mother (the maternally inherited copy) is active; the copy inherited from the father (the paternally inherited copy) is not active. This parent-specific difference in gene activation is caused by a phenomenon called genomic imprinting.

H19 is part of a cluster of genes on the short (p) arm of chromosome 11 that undergoes genomic imprinting. Another gene in this cluster, IGF2, is also involved in growth and development. A nearby region of DNA known as imprinting center 1 (IC1) or the H19 differentially methylated region (H19 DMR) controls the parent-specific genomic imprinting of both the H19 and IGF2 genes. The IC1 region undergoes a process called methylation, which is a chemical reaction that attaches small molecules called methyl groups to certain segments of DNA. Methylation, which occurs during the formation of an egg or sperm cell, is a way of marking or "stamping" the parent of origin. The IC1 region is normally methylated only on the paternally inherited copy of chromosome 11.

Health Conditions Related to Genetic Changes

Beckwith-Wiedemann syndrome

Beckwith-Wiedemann syndrome, a condition characterized by overgrowth and other signs and symptoms that affect many parts of the body, can result from changes that affect the IC1 region. In some people with this condition, the maternally inherited copy of the IC1 region is methylated along with the paternally inherited copy. Because the IC1 region controls the genomic imprinting of the H19 and IGF2 genes, this abnormality disrupts the regulation of both genes. Specifically, abnormal methylation of the IC1 region leads to a loss of H19 gene activity and increased IGF2 gene activity in many tissues. A loss of H19 gene activity, which normally restrains growth, and an increase in IGF2 gene activity, which promotes growth, together lead to overgrowth in people with Beckwith-Wiedemann syndrome.

In a few cases, Beckwith-Wiedemann syndrome has been caused by deletions of a small amount of DNA from the IC1 region. Like abnormal methylation, these deletions alter the activity of the H19 and IGF2 genes.

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Breast cancer

MedlinePlus Genetics provides information about Breast cancer

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Russell-Silver syndrome

Changes in methylation of the IC1 region are also responsible for some cases of Russell-Silver syndrome, a disorder characterized by slow growth before and after birth. The changes are different than those seen in Beckwith-Wiedemann syndrome and have the opposite effect on growth.

In Russell-Silver syndrome, the paternally inherited copy of the IC1 region often has too few methyl groups attached (hypomethylation). Hypomethylation of the IC1 region leads to increased activity of the H19 gene and a loss of IGF2 gene activity in many tissues. An increase in H19 gene activity, which restrains growth, and a loss of IGF2 gene activity, which normally promotes growth, together lead to poor growth and short stature in people with Russell-Silver syndrome.

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Wilms tumor

Changes in methylation of the IC1 region have also been found in some cases of Wilms tumor, a rare form of kidney cancer that occurs almost exclusively in children.

In some people with Wilms tumor, the maternally inherited copy of the IC1 region is methylated along with the paternally inherited copy. Abnormal methylation of the IC1 region leads to a loss of H19 gene activity and increased IGF2 gene activity in kidney cells. A loss of H19 gene activity, which normally restrains cell growth, and an increase in IGF2 gene activity, which promotes cell growth, together lead to uncontrolled cell growth and tumor development in people with Wilms tumor. As this mechanism is similar to the one that causes Beckwith-Wiedemann syndrome (described above), it is thought that individuals with Wilms tumor caused by changes in IC1 methylation may later be diagnosed with Beckwith-Wiedemann syndrome.

In most cases, abnormal methylation of IC1 and subsequent changes in H19 and IGF2 gene activity are somatic, which means that they are acquired during a person's lifetime and present only in the some tissues. Rarely, these changes are germline, which means they are present in all of the body's cells.

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Other Names for This Gene

  • D11S813E
  • H19, imprinted maternally expressed transcript (non-protein coding)
  • LINC00008
  • MGC4485
  • PRO2605

Additional Information & Resources

Tests Listed in the Genetic Testing Registry

Scientific Articles on PubMed

Catalog of Genes and Diseases from OMIM

Gene and Variant Databases

References

  • Abu-Amero S, Monk D, Frost J, Preece M, Stanier P, Moore GE. The genetic aetiology of Silver-Russell syndrome. J Med Genet. 2008 Apr;45(4):193-9. doi: 10.1136/jmg.2007.053017. Epub 2007 Dec 21. Citation on PubMed
  • Cai X, Cullen BR. The imprinted H19 noncoding RNA is a primary microRNA precursor. RNA. 2007 Mar;13(3):313-6. doi: 10.1261/rna.351707. Epub 2007 Jan 19. Citation on PubMed or Free article on PubMed Central
  • Eggermann T, Eggermann K, Schonherr N. Growth retardation versus overgrowth: Silver-Russell syndrome is genetically opposite to Beckwith-Wiedemann syndrome. Trends Genet. 2008 Apr;24(4):195-204. doi: 10.1016/j.tig.2008.01.003. Epub 2008 Mar 7. Citation on PubMed
  • Gabory A, Jammes H, Dandolo L. The H19 locus: role of an imprinted non-coding RNA in growth and development. Bioessays. 2010 Jun;32(6):473-80. doi: 10.1002/bies.200900170. Citation on PubMed
  • MacFarland SP, Duffy KA, Bhatti TR, Bagatell R, Balamuth NJ, Brodeur GM, Ganguly A, Mattei PA, Surrey LF, Balis FM, Kalish JM. Diagnosis of Beckwith-Wiedemann syndrome in children presenting with Wilms tumor. Pediatr Blood Cancer. 2018 Oct;65(10):e27296. doi: 10.1002/pbc.27296. Epub 2018 Jun 22. Citation on PubMed or Free article on PubMed Central
  • Nativio R, Sparago A, Ito Y, Weksberg R, Riccio A, Murrell A. Disruption of genomic neighbourhood at the imprinted IGF2-H19 locus in Beckwith-Wiedemann syndrome and Silver-Russell syndrome. Hum Mol Genet. 2011 Apr 1;20(7):1363-74. doi: 10.1093/hmg/ddr018. Epub 2011 Jan 31. Citation on PubMed or Free article on PubMed Central
  • Sparago A, Cerrato F, Vernucci M, Ferrero GB, Silengo MC, Riccio A. Microdeletions in the human H19 DMR result in loss of IGF2 imprinting and Beckwith-Wiedemann syndrome. Nat Genet. 2004 Sep;36(9):958-60. doi: 10.1038/ng1410. Epub 2004 Aug 15. Citation on PubMed
  • Tian F, Yourek G, Shi X, Yang Y. The development of Wilms tumor: from WT1 and microRNA to animal models. Biochim Biophys Acta. 2014 Aug;1846(1):180-7. doi: 10.1016/j.bbcan.2014.07.003. Epub 2014 Jul 11. Citation on PubMed
  • Turner JT, Brzezinski J, Dome JS. Wilms Tumor Predisposition. 2003 Dec 19 [updated 2022 Mar 24]. In: Adam MP, Feldman J, Mirzaa GM, Pagon RA, Wallace SE, Amemiya A, editors. GeneReviews(R) [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2024. Available from http://www.ncbi.nlm.nih.gov/books/NBK1294/ Citation on PubMed
  • Wakeling EL, Brioude F, Lokulo-Sodipe O, O'Connell SM, Salem J, Bliek J, Canton AP, Chrzanowska KH, Davies JH, Dias RP, Dubern B, Elbracht M, Giabicani E, Grimberg A, Gronskov K, Hokken-Koelega AC, Jorge AA, Kagami M, Linglart A, Maghnie M, Mohnike K, Monk D, Moore GE, Murray PG, Ogata T, Petit IO, Russo S, Said E, Toumba M, Tumer Z, Binder G, Eggermann T, Harbison MD, Temple IK, Mackay DJ, Netchine I. Diagnosis and management of Silver-Russell syndrome: first international consensus statement. Nat Rev Endocrinol. 2017 Feb;13(2):105-124. doi: 10.1038/nrendo.2016.138. Epub 2016 Sep 2. Citation on PubMed
  • Wang KH, Kupa J, Duffy KA, Kalish JM. Diagnosis and Management of Beckwith-Wiedemann Syndrome. Front Pediatr. 2020 Jan 21;7:562. doi: 10.3389/fped.2019.00562. eCollection 2019. Citation on PubMed

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