| Autor: |
Legendre, Marine, Abadie, Véronique, Attié‐Bitach, Tania, Philip, Nicole, Busa, Tiffany, Bonneau, Dominique, Colin, Estelle, Dollfus, Hélène, Lacombe, Didier, Toutain, Annick, Blesson, Sophie, Julia, Sophie, Martin‐Coignard, Dominique, Geneviève, David, Leheup, Bruno, Odent, Sylvie, Jouk, Pierre‐Simon, Mercier, Sandra, Faivre, Laurence, Vincent‐Delorme, Catherine, Francannet, Christine, Naudion, Sophie, Mathieu‐Dramard, Michèle, Delrue, Marie‐Ange, Goldenberg, Alice, Héron, Delphine, Parent, Philippe, Touraine, Renaud, Layet, Valérie, Sanlaville, Damien, Quélin, Chloé, Moutton, Sébastien, Fradin, Mélanie, Jacquette, Aurélia, Sigaudy, Sabine, Pinson, Lucile, Sarda, Pierre, Guerrot, Anne‐Marie, Rossi, Massimiliano, Masurel‐Paulet, Alice, El Chehadeh, Salima, Piguel, Xavier, Rodriguez‐Ballesteros, Montserrat, Ragot, Stéphanie, Lyonnet, Stanislas, Bilan, Frédéric, Gilbert‐Dussardier, Brigitte |
| Zdroj: |
American Journal of Medical Genetics. Part C, Seminars in Medical Genetics; December 2017, Vol. 175 Issue: 4 p417-430, 14p |
| Abstrakt: |
CHARGE syndrome (CS) is a genetic disorder whose first description included Coloboma, Heart disease, Atresia of choanae, Retarded growth and development, Genital hypoplasia, and Ear anomalies and deafness, most often caused by a genetic mutation in the CHD7gene. Two features were then added: semicircular canal anomalies and arhinencephaly/olfactory bulb agenesis, with classification of typical, partial, or atypical forms on the basis of major and minor clinical criteria. The detection rate of a pathogenic variant in the CHD7gene varies from 67% to 90%. To try to have an overview of this heterogenous clinical condition and specify a genotype–phenotype relation, we conducted a national study of phenotype and genotype in 119 patients with CS. Selected clinical diagnostic criteria were from Verloes (2005), updated by Blake & Prasad ([Blake, K. D., 2006]). Besides obtaining a detailed clinical description, when possible, patients underwent a full ophthalmologic examination, audiometry, temporal bone CT scan, gonadotropin analysis, and olfactory‐bulb MRI. All patients underwent CHD7sequencing and MLPA analysis. We found a pathogenic CHD7variant in 83% of typical CS cases and 58% of atypical cases. Pathogenic variants in the CHD7gene were classified by the expected impact on the protein. In all, 90% of patients had a typical form of CS and 10% an atypical form. The most frequent features were deafness/semicircular canal hypoplasia (94%), pituitary defect/hypogonadism (89%), external ear anomalies (87%), square‐shaped face (81%), and arhinencephaly/anosmia (80%). Coloboma (73%), heart defects (65%), and choanal atresia (43%) were less frequent. |
| Databáze: |
Supplemental Index |
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