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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Héon, E. et al.

Héon, Greenberg, Kopp, Rootman, Vincent, Billingsley, Priston, Dorval, Chow, McInnes, Heathcote, Westall, Sutphin, Semina, Bremner, Stone,

VSX1: a gene for posterior polymorphous dystrophy and keratoconus.

We identified mutations in the VSX1 homeobox gene for two distinct inherited corneal dystrophies; posterior polymorphous dystrophy (PPD) and keratoconus. One of the mutation (R166W) responsible for keratoconus altered the homeodomain and impaired DNA binding. Two other sequence changes (L159M and G160D) were associated with keratoconus and PPD, respectively, and involved a region adjacent to the homeodomain. The G160D substitution, and a fourth defect affecting the highly conserved CVC domain (P247R), occurred in a child with very severe PPD who required a corneal transplant at 3 months of age. In this family, relatives with the G160D change alone had mild to moderate PPD, while P247R alone caused no corneal abnormalities. However, with either the G160D or P247R mutation, electroretinography detected abnormal function of the inner retina, where VSX1 is expressed. These data define the molecular basis of two important corneal dystrophies and reveal the importance of the CVC domain in the human retina.[1]

References

VSX1: a gene for posterior polymorphous dystrophy and keratoconus. Héon, E., Greenberg, A., Kopp, K.K., Rootman, D., Vincent, A.L., Billingsley, G., Priston, M., Dorval, K.M., Chow, R.L., McInnes, R.R., Heathcote, G., Westall, C., Sutphin, J.E., Semina, E., Bremner, R., Stone, E.M. Hum. Mol. Genet. (2002) [Pubmed]

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