eCite Digital Repository

Investigation of albinism genes in congenital esotropia


Burdon, KP and Wilkinson, RM and Barbour, JM and Dickinson, JL and Stankovich, J and Mackey, DA and Sale, MM, Investigation of albinism genes in congenital esotropia, Molecular Vision, 9, (83-85 ) pp. 710-714. ISSN 1090-0535 (2003) [Refereed Article]


Purpose: Esotropia is a feature of albinism. Amongst esotropic patients there may be mild unrecognised albinos. Oculocutaneous albinism shares several clinical features with congenital esotropia. It is well known that mammals with oculocutaneous albinism have misrouted retinal ganglion cell axons, most likely caused by the absence of melanin or DOPA during development. We investigated the hypothesis that mutations in the albinism genes Tyrosinase, the P Gene, and TYRP1 may also be responsible for congenital esotropia via a similar mechanism. Methods: We screened these three genes in 21 families with congenital esotropia using single stranded conformational polymorphism analysis. Results: No rare sequence variants segregating with esoptopia were detected. A novel silent mutation of the TYRP1 gene was identified in one pedigree but is not likely to be causative. Several previously reported common polymorphisms were detected but do not segregate with disease in this population. Conclusions: Rare mutations of these genes do not appear to be responsible for congenital esotropia. Although we found no evidence for segregation of common variants with disease, these require further investigation for a possible contribution to a complex threshold model. Several lines of evidence indicate a genetic componenet of congenital esotropia, however, this is the first investigation of candidate genes for this disorder.

Item Details

Item Type:Refereed Article
Research Division:Biomedical and Clinical Sciences
Research Group:Clinical sciences
Research Field:Medical genetics (excl. cancer genetics)
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Burdon, KP (Professor Kathryn Burdon)
UTAS Author:Dickinson, JL (Professor Joanne Dickinson)
UTAS Author:Stankovich, J (Dr Jim Stankovich)
UTAS Author:Mackey, DA (Professor David Mackey)
UTAS Author:Sale, MM (Dr Michele Sale)
ID Code:28384
Year Published:2003
Web of Science® Times Cited:6
Deposited By:Menzies Centre
Deposited On:2003-08-01
Last Modified:2011-11-21

Repository Staff Only: item control page