Anophthalmia/microphthalmia-esophageal atresia syndrome
Dernière mise à jour 8 Jul 2025
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Anophthalmia/microphthalmia-esophageal atresia (AEG) syndrome is a rare disorder that is characterised by the abnormal development of the eyes and other parts of the body, including the tube that carries food from the mouth to the stomach (esophagus).
Description
Anophthalmia/microphthalmia-esophageal atresia (AEG) syndrome is a rare disorder that is characterised by the abnormal development of the eyes and other parts of the body, including the tube that carries food from the mouth to the stomach (esophagus).
People who have AEG syndrome are usually born without one or both eyes (anophthalmia), although some individuals have underdeveloped and abnormally small eyes (microphthalmia). People who have anophthalmia have no vision in the affected eye, but people who have microphthalmia may or may not have significant vision loss.
Affected individuals who have some remaining eye tissue can have additional eye abnormalities. Some people may be missing pieces of tissue in the structures that form the eye (coloboma), or the nerves that carry signals between the eyes and the brain may be underdeveloped (optic nerve hypoplasia). The presence of other eye problems can worsen an affected person's vision.
Some people with AEG syndrome are born with a blocked esophagus (esophageal atresia), which is often accompanied by an abnormal connection between the windpipe (trachea) and the esophagus (tracheoesophageal fistula). Additional features of AEG syndrome can include brain abnormalities, slow growth, delayed development of motor skills (such as walking), and intellectual disabilities. Affected individuals may also have genital abnormalities, which can include undescended testes (cryptorchidism) and an unusually small penis.
Inheritance patterns
The source lists the following possible inheritance patterns: Autosomal dominant+New variant. More than one pattern can apply in different cases.
Related genes
Other names
AEG syndrome
Anophthalmia-esophageal-genital syndrome
MCOPS3
SOX2 anophthalmia syndrome
SOX2 disorder
SOX2 syndrome
SOX2-related eye disorders
Syndromic microphthalmia type 3
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Lectures complémentaires et références
- Anophthalmia/microphthalmia-esophageal atresia syndrome; MedlinePlus, National Library of Medicine.
- Bakrania P, Robinson DO, Bunyan DJ, Salt A, Martin A, Crolla JA, Wyatt A, Fielder A, Ainsworth J, Moore A, Read S, Uddin J, Laws D, Pascuel-Salcedo D, Ayuso C, Allen L, Collin JR, Ragge NK. SOX2 anophthalmia syndrome: 12 new cases demonstrating broader phenotype and high frequency of large gene deletions. Br J Ophthalmol. 2007 Nov;91(11):1471-6. doi: 10.1136/bjo.2007.117929. Epub 2007 May 23.
- Kelberman D, de Castro SC, Huang S, Crolla JA, Palmer R, Gregory JW, Taylor D, Cavallo L, Faienza MF, Fischetto R, Achermann JC, Martinez-Barbera JP, Rizzoti K, Lovell-Badge R, Robinson IC, Gerrelli D, Dattani MT. SOX2 plays a critical role in the pituitary, forebrain, and eye during human embryonic development. J Clin Endocrinol Metab. 2008 May;93(5):1865-73. doi: 10.1210/jc.2007-2337. Epub 2008 Feb 19.
- Schneider A, Bardakjian TM, Zhou J, Hughes N, Keep R, Dorsainville D, Kherani F, Katowitz J, Schimmenti LA, Hummel M, Fitzpatrick DR, Young TL. Familial recurrence of SOX2 anophthalmia syndrome: phenotypically normal mother with two affected daughters. Am J Med Genet A. 2008 Nov 1;146A(21):2794-8. doi: 10.1002/ajmg.a.32384.
- Tziaferi V, Kelberman D, Dattani MT. The role of SOX2 in hypogonadotropic hypogonadism. Sex Dev. 2008;2(4-5):194-9. doi: 10.1159/000152035. Epub 2008 Nov 5.
- Verma AS, Fitzpatrick DR. Anophthalmia and microphthalmia. Orphanet J Rare Dis. 2007 Nov 26;2:47. doi: 10.1186/1750-1172-2-47.
- Williamson KA, FitzPatrick DR. The genetic architecture of microphthalmia, anophthalmia and coloboma. Eur J Med Genet. 2014 Aug;57(8):369-80. doi: 10.1016/j.ejmg.2014.05.002. Epub 2014 May 22.
- Williamson KA, Hever AM, Rainger J, Rogers RC, Magee A, Fiedler Z, Keng WT, Sharkey FH, McGill N, Hill CJ, Schneider A, Messina M, Turnpenny PD, Fantes JA, van Heyningen V, FitzPatrick DR. Mutations in SOX2 cause anophthalmia-esophageal-genital (AEG) syndrome. Hum Mol Genet. 2006 May 1;15(9):1413-22. doi: 10.1093/hmg/ddl064. Epub 2006 Mar 16.
- Williamson KA, Yates TM, FitzPatrick DR. SOX2 Disorder. 2006 Feb 23 [updated 2020 Jul 30]. In: Adam MP, Bick S, Mirzaa GM, Wallace SE, Amemiya A, editors. GeneReviews(R) [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2026. Available from http://www.ncbi.nlm.nih.gov/books/NBK1300/
- Zhou J, Kherani F, Bardakjian TM, Katowitz J, Hughes N, Schimmenti LA, Schneider A, Young TL. Identification of novel mutations and sequence variants in the SOX2 and CHX10 genes in patients with anophthalmia/microphthalmia. Mol Vis. 2008 Mar 24;14:583-92.
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