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Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/491

Título: Analysis of the UDP-glucuronosyltransferase gene in Portuguese patients with a clinical diagnosis of Gilbert and Crigler–Najjar syndromes
Autor: Costa, Elísio
Vieira, Emília
Martins, Marcia
Saraiva, Jorge
Cancela, Eugénia
Costa, Miguel
Bauerle, Roswitha
Freitas, Teresa
Carvalho, João
Santos-Silva, Ermelinda
Barbot, José
Santos, Rosário
Palavras-chave: Gilbert syndrome
UGT1A1
Crigler–Najjar syndrome
Hyperbilirubinemia
Mutations
Issue Date: 2006
Editora: Elsevier
Citação: Costa, Elísio; Vieira, Emília; Martins, Marcia; Saraiva, Jorge; Cancela, Eugénia; Costa, Miguel; Bauerle, Roswitha; Freitas, Teresa; Carvalho, João; Santos-Silva, Ermelinda; Barbot, José; Santos, Rosário (2006) - Analysis of the UDP-glucuronosyltransferase gene in Portuguese patients with a clinical diagnosis of Gilbert and Crigler–Najjar syndromes. Blood Cells, Molecules, and Diseases. ISSN 1079-9796. 36:1, p. 91-97
Resumo: We describe the molecular study in a cohort of 120 Portuguese patients with the clinical diagnosis of Gilbert syndrome and in one with the diagnosis of Crigler–Najjar syndrome type II, as well as a prenatal diagnosis of Crigler–Najjar syndrome type I. Among the 120 unrelated patients with Gilbert syndrome, 110 were homozygous for the [TA]7 allele ([TA]7/[TA]7), and one patient was a compound heterozygote for two different insertions ([TA]7/[TA]8). The remaining 9 patients were heterozygous for the TA insertion ([TA]6/[TA]7). Additional studies in these 9 patients revealed heterozygosity for the c.674T>G, c.488_491dupACCT and c.923G>A mutations, in 1, 1 and 4 patients, respectively. The patient with Crigler–Najjar syndrome type II was a compound heterozygote for [TA]7 and the c.923G>A mutation. The undocumented polymorphisms c.-1126C>T and c.997-82T>C were also detected in the course of this study. Prenatal diagnosis in a family with a boy previously diagnosed as Crigler–Najjar syndrome type I and homozygosity for the c.923G>A mutation revealed that the fetus was unaffected. Homozygosity for the [TA] insertion was found to be the most frequent cause of GS in our population. Identification of further mutations in the UGT1A1 gene was also seen to contribute significantly towards diagnosis.
URI: http://hdl.handle.net/10198/491
ISSN: 1079-9796
Versão do Editor: http://www.sciencedirect.com/science/journal/10799796
Appears in Collections:DTDT - Artigos em Revistas Indexados ao ISI

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