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- Title
A CGH study of 27 patients with CHARGE association.
- Authors
Sanlaville, D; Romana, SP; Lapierre, JM; Amiel, J; Genevieve, D; Ozilou, C; Le Lorch, M; Brisset, S; Gosset, P; Baumann, C; Turleau, C; Lyonnet, S; Vekemans, M
- Abstract
CHARGE association is a non-random occurrence of congenital malformations including coloboma, heart disease, choanal atresia, retarded growth and/or retarded development, genital hypoplasia, ear anomalies and/or deafness. The cause of this association remains unknown. Various genetic mechanisms have been proposed, including a contiguous gene syndrome but, so far, no recurrent locus has been identified. To address this question, we decided to perform a comparative genomic hybridization (CGH) study on a cohort of 27 patients with CHARGE association and a normal standard karyotype. We found two chromosomal anomalies: a der(9)t(9;13) derived from a paternal translocation and a der(6)t(4;6) of unknown origin. This suggests that chromosome imbalances may well mimic CHARGE association. Therefore patients with CHARGE association must be carefully tested with classical and molecular cytogenetic techniques to detect a potential chromosome imbalance. It is expected that more stringent diagnostic criteria of CHARGE association could define a more homogeneous group of patients where a single genetic cause might be identified.
- Subjects
HUMAN abnormalities; COMPARATIVE genomic hybridization; CYTOGENETICS; DIAGNOSIS
- Publication
Clinical Genetics, 2002, Vol 61, Issue 2, p135
- ISSN
0009-9163
- Publication type
Article
- DOI
10.1034/j.1399-0004.2002.610208.x