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  • Title: TGFBI gene mutations in Brazilian patients with corneal dystrophy.
    Author: Solari HP, Ventura MP, Perez AB, Sallum JM, Burnier MN, Belfort R.
    Journal: Eye (Lond); 2007 May; 21(5):587-90. PubMed ID: 16440005.
    Abstract:
    PURPOSE: To investigate the transforming growth factor beta-induced gene (TGFBI) mutations in Brazilian patients with corneal dystrophy and to evaluate the phenotype-genotype correlation in these patients. METHODS: A total of 11 unrelated families were studied. The diagnosis of corneal dystrophy was based on clinical and histopathological findings. Genomic DNA was extracted from peripheral blood leucocytes, and exons 4 and 12 of the TGFBIgene were amplified by polymerase chain reaction followed by direct sequencing on both strands. RESULTS: Five different mutations in the TGFBIgene were found in the probands. We identified the following mutations: lattice corneal dystrophy--R124C and A546T; Reis-Bücklers corneal dystrophy--R555Q and R124L; granular corneal dystrophy--R555W and Avellino dystrophy--R555W. In three of the 11 studied families there was no mutation in exons 4 and 12. CONCLUSIONS: This is the first report of mutations in the TGFBIgene in a series of Brazilian patients with corneal dystrophy. The findings indicate that TGFBIgene screening should be considered in the diagnosis of corneal dystrophy.
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