Rare Genomic Rearrangement in a Boy with Williams-Beuren Syndrome Associated to XYY Syndrome and Intriguing Behavior

Autor(es)

Dutra, Roberta L. ^{[1, 2]} ; Piazzon, Flavia B. ^[2] ; Zanardo, Evelin A. ^[2] ; Moura Machado Costa, Thais Virginia ^[2] ; Montenegro, Marilia M. ^{[1, 2]} ; Novo-Filho, Gil M. ^{[1, 2]} ; Dias, Alexandre T. ^[2] ; Nascimento, Amom M. ^{[1, 2]} ; Kim, Chong Ae ^[1] ; Kulikowski, Leslie D. ^{[3, 2]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Med, Inst Crianca, Genet Unit, Sao Paulo - Brazil

^[2] Univ Sao Paulo, Fac Med, Dept Pathol, Cytogenom Lab LIM03, Sao Paulo - Brazil

^[3] Fac Med ABC, Human Reprod & Genet Ctr, Dept Collect Hlth, Santo Andre, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AMERICAN JOURNAL OF MEDICAL GENETICS PART A; v. 167, n. 12, p. 3197-3203, DEC 2015.
• Citações Web of Science: 1

Resumo

Williams-Beuren syndrome (WBS) is caused by a hemizygous contiguous gene microdeletion of 1.55-1.84 Mb at 7q11.23 region. Approximately, 28 genes have been shown to contribute to classical phenotype of SWB with presence of dysmorphic facial features, supravalvular aortic stenosis (SVAS), intellectual disability, and overfriendliness. With the use of Microarray-based comparative genomic hybridization and other molecular cytogenetic techniques, is possible define with more accuracy partial or atypical deletion and refine the genotype-phenotype correlation. Here, we report on a rare genomic structural rearrangement in a boy with atypical deletion in 7q11.23 and XYY syndrome with characteristic clinical signs, but not sufficient for the diagnosis of WBS. Cytogenetic analysis of G-banding showed a karyotype 47, XYY. Analysis of DNA with the technique of MLPA (Multiplex Ligation-dependent Probe Amplification) using kits a combination of kits (P064, P036, P070, and P029) identified an atypical deletion on 7q11.23. In addition, high resolution SNP Oligonucleotide Microarray Analysis (SNP-array) confirmed the alterations found by MLPA and revealed others pathogenic CNVs, in the chromosomes 7 and X. The present report demonstrates an association not yet described in literature, between Williams-Beuren syndrome and 47, XYY. The identification of atypical deletion in 7q11.23 concomitant to additional pathogenic CNVs in others genomic regions allows a better comprehension of clinical consequences of atypical genomic rearrangements. (C) 2015 Wiley Periodicals, Inc. (AU)

• Processo FAPESP: 09/53105-9 - Aplicação da citogenética molecular no diagnóstico de pacientes com anomalias congênitas para a redução da mortalidade infantil
• Beneficiário: Leslie Domenici Kulikowski
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisa em Políticas Públicas para o SUS
• Processo FAPESP: 10/52710-3 - Investigacao etiologica da variacao no numero de copias em pacientes com anomalias congenitas e atraso de desenvolvimento neuropsicomotor (adnpm) pela tecnica de mlpa (multiplex ligation-dependent probe ampli
• Beneficiário: Roberta Lelis Dutra
• Modalidade de apoio: Bolsas no Brasil - Doutorado