Corneal dystrophy-perceptive deafness syndrome

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Corneal dystrophy-perceptive deafness syndrome
Other names: Congenital corneal dystrophy, progressive sensorineural deafness, Harboyan syndrome, CDPD (abbr.), Corneal dystrophy and sensorineural deafness.[1]
Autosomal recessive - en.svg
This disorder is inherited in an autosomal recessive manner most of the time.
SpecialtyMedical genetics
CausesGenetic mutation
Frequencyrare, about 24 cases have been described in medical literature

Corneal dystrophy-perceptive deafness syndrome, also known as Harboyan syndrome, is a rare genetic disorder characterized by congenital hereditary corneal dystrophy that occurs alongside progressive hearing loss of post-lingual onset.[2]

Signs and symptoms

File:PMC2576053 1750-1172-3-28-1.jpg
Cornea presents congenitally with ground glass, bluish-white opaque cornea from diffuse edema of stroma

Below is a list of the symptoms people with this condition exhibit:[3]

  • Corneal dystrophy
  • Clouding of the cornea
  • Nystagmus
  • Blurry vision
  • Generalized vision impairment
  • Progressive post-lingual hearing loss

The latter usually appears between the ages of 20 and 30 years old.[4]


The hearing loss and visual impairment associated with this condition can cause difficulties with living.


This condition is caused by mutations in the SLC4A11 gene which are inherited in an autosomal recessive manner (most of the time).[5][6] Desir et al. (2007) identified mutations in this gene in 6 families, of which 3 were consanguineous and 3 were not, they found homozygosity for the mutation in the consanguineous families and compound heterozygosity in the non-consanguineous families.[7]


A diagnosis can be made by general symptom examination and with both ophthalmologic and audiometric studies.


Although this condition has no cure, it can be treated.

Hearing loss

Corneal dystrophy[8]


According to OrphaNet, only 24 cases from 11 families across the world have been described in medical literature, these families' origins were very diverse, including Indigenous South American, Sephardic Jewish, Brazilian (of Portuguese descent), Dutch, Romani, Moroccan, and Dominican.[9]

See also


  1. "Corneal dystrophy and perceptive deafness". Archived from the original on 2022-08-15. Retrieved 2023-06-22.
  2. "Corneal Dystrophy and Perceptive Deafness (SLC4A11)". Sema4. 2017-02-01. Archived from the original on 2022-08-03. Retrieved 2022-08-03.
  3. "Corneal dystrophy and perceptive deafness - About the Disease - Genetic and Rare Diseases Information Center". Archived from the original on 2022-08-03. Retrieved 2022-08-03.
  4. "corneal dystrophy and sensorineural deafness | Hereditary Ocular Diseases". Archived from the original on 2022-01-18. Retrieved 2022-08-03.
  5. "Helpful information about | Eugene Australia". Archived from the original on 2022-08-03. Retrieved 2022-08-03.
  6. "Entry - #217400 - CORNEAL DYSTROPHY AND PERCEPTIVE DEAFNESS; CDPD - OMIM". Archived from the original on 2022-06-17. Retrieved 2022-08-03.
  7. Desir, Julie; Moya, Graciela; Reish, Orit; Van Regemorter, Nicole; Deconinck, Hilde; David, Karen L.; Meire, Françoise M.; Abramowicz, Marc J. (2007-05-01). "Borate transporter SLC4A11 mutations cause both Harboyan syndrome and non-syndromic corneal endothelial dystrophy". Journal of Medical Genetics. 44 (5): 322–326. doi:10.1136/jmg.2006.046904. ISSN 1468-6244. PMC 2597979. PMID 17220209.
  8. Newman, Dennis. "Corneal Dystrophies: Symptoms, Causes, and Treatment". WebMD. Archived from the original on 2022-08-03. Retrieved 2022-08-03.
  9. RESERVED, INSERM US14-- ALL RIGHTS. "Orphanet: Corneal dystrophy perceptive deafness syndrome". Archived from the original on 2022-08-03. Retrieved 2022-08-03.