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Heritability of Central Corneal Thickness in Nuclear Families


Landers, JA and Hewitt, AW and Dimasi, DP and Charlesworth, JC and Straga, T and Mills, RAD and Savarirayan, R and Mackey, DA and Burdon, KP and Craig, JE, Heritability of Central Corneal Thickness in Nuclear Families , Investigative Ophthalmology and Visual Science (Iovs), 50, (9) pp. 4087-4090 . ISSN 0146-0404 (2009) [Refereed Article]

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Copyright 2009 Association for Research in Vision and Ophthalmology, Inc.

DOI: doi:10.1167/iovs.08-3271


PURPOSE. Many ocular parameters show strong heritable tendencies. The significance of central corneal thickness (CCT) in the context of glaucoma has been the subject of much debate recently, but its heritability has not been extensively explored. This study was designed to investigate the parent-child heritability of CCT among groups who have CCT considered to be at the extreme ends of the normal range. METHODS. Index cases were recruited through a tertiary referral center if their CCT was greater than 578 mu m (thick) or less than 510 mu m (thin), representing +/- 1 SD from a previously published meta-analysis mean of 544 mu m (34 mu m SD). Subsequently, CCT was measured in all available family members of the index cases. Family units were then analyzed to establish the degree of heritability of CCT from parent to child. RESULTS. Thirty-three index cases were included in the analysis (10 > 1 SD and 23 > 1 SD from the meta-analysis CCT mean). The mean CCT of the children of index cases with a CCT more than 1 SD from the mean (n = 15) and less than 1 SD from the mean (n = 40) was 568 mu m (32 mu m SD) and 521 mu m (22 mu m SD), respectively (t = 6.14; P < 0.0001). The parent-child heritability estimate for CCT was h(2) = 0.68 (95% CI, 0.64-0.73). CONCLUSIONS. These results indicate that CCT shows strong parent-child heritability, with offspring likely to demonstrate CCT similar to the parental index case.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Genetics
Research Field:Gene mapping
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Hewitt, AW (Professor Alex Hewitt)
UTAS Author:Charlesworth, JC (Dr Jac Charlesworth)
UTAS Author:Mackey, DA (Professor David Mackey)
UTAS Author:Burdon, KP (Professor Kathryn Burdon)
ID Code:73573
Year Published:2009
Web of Science® Times Cited:40
Deposited By:Research Division
Deposited On:2011-10-17
Last Modified:2016-11-16

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