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]
| Corneal dystrophy-perceptive deafness syndrome | |
|---|---|
| Other names | Congenital corneal dystrophy, progressive sensorineural deafness, Harboyan syndrome, CDPD (abbr.), Corneal dystrophy and sensorineural deafness.[1] |
 | |
| This disorder is inherited in an autosomal recessive manner most of the time. | |
| Specialty | Medical genetics |
| Causes | Genetic mutation |
| Prevention | none |
| Prognosis | medium |
| Frequency | rare, about 24 cases have been described in medical literature |
| Deaths | - |
Signs and symptoms edit
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]
Complications edit
The hearing loss and visual impairment associated with this condition can cause difficulties with living.
Treatment edit
Although this condition has no cure, it can be treated.
Hearing loss edit
Corneal dystrophy edit
Source:[5]
- Contact lenses
- Corneal transplant
Diagnosis edit
A diagnosis can be made by general symptom examination and with both ophthalmologic and audiometric studies.
Genetics edit
This condition is caused by mutations in the SLC4A11 gene which are inherited in an autosomal recessive manner (most of the time).[6][7] 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.[8]
Prevalence edit
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 edit
References edit
- ^ "Corneal dystrophy and perceptive deafness".
- ^ "Corneal Dystrophy and Perceptive Deafness (SLC4A11)". Sema4. 2017-02-01. Retrieved 2022-08-03.
- ^ "Corneal dystrophy and perceptive deafness - About the Disease - Genetic and Rare Diseases Information Center". rarediseases.info.nih.gov. Archived from the original on 2022-08-03. Retrieved 2022-08-03.
- ^ "corneal dystrophy and sensorineural deafness | Hereditary Ocular Diseases". disorders.eyes.arizona.edu. Retrieved 2022-08-03.
- ^ Newman, Dennis. "Corneal Dystrophies: Symptoms, Causes, and Treatment". WebMD. Retrieved 2022-08-03.
- ^ "Helpful information about | Eugene Australia". eugenelabs.com. Archived from the original on 2022-08-03. Retrieved 2022-08-03.
- ^ "Entry - #217400 - CORNEAL DYSTROPHY AND PERCEPTIVE DEAFNESS; CDPD - OMIM". www.omim.org. Retrieved 2022-08-03.
- ^ 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.
- ^ RESERVED, INSERM US14-- ALL RIGHTS. "Orphanet: Corneal dystrophy perceptive deafness syndrome". www.orpha.net. Retrieved 2022-08-03.
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