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Type: Artigo de periódico
Title: Five cases of supernumerary small ring chromosomes 1: Heterogeneity and genotype-phenotype correlation
Author: Bernardini, L
Capalbo, A
D'Avanzo, MG
Torrente, I
Grammatico, P
Dell'Edera, D
Cavalcanti, DP
Novelli, A
Dallapiccola, B
Abstract: Genetic counselling of patients with small supernumerary ring chromosomes (sSRCs) can be difficult, especially in prenatal testing, due to the complexity in establishing a karyotype-phenotype correlation. In fact, it has been estimated that about 10% of extra ring(1) chromosomes are associated with an unremarkable phenotype. We report on five new cases of extra ring chromosomes(1) manifesting different clinical outcome. One case was familial, segregating from a mother with mosaic karyotype, while the others were de novo. Ring chromosomes were characterised by FISH. In three subjects the involvement of the same euchromatic 1p region was demonstrated. Present observations corroborate previous results and provide some insight into the identification of the harmless ring(1) structures. (c) 2006 Elsevier Masson SAS. All rights reserved.
Subject: supernumerary ring chromosome (SRC)
chromosome 1
genetic counselling
Country: Holanda
Editor: Elsevier Science Bv
Citation: European Journal Of Medical Genetics. Elsevier Science Bv, v. 50, n. 2, n. 94, n. 102, 2007.
Rights: fechado
Identifier DOI: 10.1016/j.ejmg.2006.11.001
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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