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A large TAT deletion in a tyrosinaemia type II patient
Maria Legarda1, Katarzyna Wlodarczyk, Sergio Lage
1Division of Metabolism, Paediatrics Department, 5ª D, Cruces Hospital, Plaza de Cruces s/n, 48903 Barakaldo, Vizcaya, Spain.
Abstract:
A girl, born to unrelated Spanish parents, presented at 6 months of age with photophobia, keratitis, palmar hyperkeratosis and high plasma tyrosine levels, indicative of tyrosinaemia type II. Analysis of the tyrosine aminotransferase (TAT) gene revealed a paternally inherited frameshift mutation c.1213delCinsAG at codon 405 causing a premature stop codon, and a maternally inherited deletion of 193kb encompassing the complete TAT gene and three neighbouring genes. This is the first complete TAT deletion in tyrosinaemia type II described so far.
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