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Ophthalmic Genet. 2005 Dec;26(4):169-73.

Meesmann corneal dystrophy (MECD): report of 2 families and a novel mutation in the cornea specific keratin 12 (KRT12) gene.

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  • 1IRO-Institut de Recherche en Ophtalmologie, Sion, Switzerland.



Meesmann corneal dystrophy (MECD) is an autosomal dominant disorder affecting the corneal epithelium. It is caused by heterozygous mutations in KRT3 or KRT12 gene. Actually, 14 mutations have been reported, 1 in KRT3 and 13 in KRT12. These genes were screened in several patients suffering from MECD.


Patients from 2 families were screened for mutation in KRT3 and KRT12. Exons were PCR-amplified and directly sequenced. The new mutation was checked by DHPLC in 51 control individuals of Swiss origin.


In one family, the M129T heterozygous mutation was observed in KRT12. In the second family, we identified a novel I426S heterozygous mutation in exon 6 of KRT12.

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