Further delineation of the duplication syndrome phenotype in 59 French male patients, with a particular focus on morphological and neurological features.

Authors:
Marguerite Miguet Laurence Faivre Jeanne Amiel Mathilde Nizon Renaud Touraine Fabienne Prieur Laurent Pasquier Mathilde Lefebvre Julien Thevenon Christèle Dubourg Sophie Julia Catherine Sarret Ganaëlle Remerand Christine Francannet Fanny Laffargue Odile Boespflug-Tanguy Albert David Bertrand Isidor Jacqueline Vigneron Bruno Leheup Laetitia Lambert Christophe Philippe Mylène Béri-Dexheimer Jean-Marie Cuisset Joris Andrieux Ghislaine Plessis Annick Toutain Laurent Guibaud Valérie Cormier-Daire Marlene Rio Jean-Paul Bonnefont Bernard Echenne Hubert Journel Lydie Burglen Sandrine Chantot-Bastaraud Thierry Bienvenu Clarisse Baumann Laurence Perrin Séverine Drunat Pierre-Simon Jouk Klaus Dieterich Françoise Devillard Didier Lacombe Nicole Philip Sabine Sigaudy Anne Moncla Chantal Missirian Catherine Badens Nathalie Perreton Christel Thauvin-Robinet Réseau AChro-Puce Jean-Michel Pedespan Caroline Rooryck Cyril Goizet Catherine Vincent-Delorme Bénédicte Duban-Bedu Nadia Bahi-Buisson Alexandra Afenjar Kim Maincent Delphine Héron Jean-Luc Alessandri Dominique Martin-Coignard Gaëtan Lesca Massimiliano Rossi Martine Raynaud Patrick Callier Anne-Laure Mosca-Boidron Nathalie Marle Charles Coutton Véronique Satre Cédric Le Caignec Valérie Malan Serge Romana Boris Keren Anne-Claude Tabet Valérie Kremer Sophie Scheidecker Adeline Vigouroux Marilyn Lackmy-Port-Lis Damien Sanlaville Marianne Till Maryline Carneiro Brigitte Gilbert-Dussardier Marjolaine Willems Hilde Van Esch Vincent Des Portes Salima El Chehadeh

J Med Genet 2018 Jun 4;55(6):359-371. Epub 2018 Apr 4.

Service de génétique médicale, Institut de Génétique Médicale d'Alsace (IGMA), Centre de Référence Maladies Rares "Anomalies du développement et syndromes malformatifs", Centre de Référence Maladies Rares "Des déficiences intellectuelles de causes rares", Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, France.

The Xq28 duplication involving the gene ( duplication) has been mainly described in male patients with severe developmental delay (DD) associated with spasticity, stereotypic movements and recurrent infections. Nevertheless, only a few series have been published. We aimed to better describe the phenotype of this condition, with a focus on morphological and neurological features. Through a national collaborative study, we report a large French series of 59 affected males with interstitial duplication. Most of the patients (93%) shared similar facial features, which evolved with age (midface hypoplasia, narrow and prominent nasal bridge, thick lower lip, large prominent ears), thick hair, livedo of the limbs, tapered fingers, small feet and vasomotor troubles. Early hypotonia and global DD were constant, with 21% of patients unable to walk. In patients able to stand, lower limbs weakness and spasticity led to a singular standing habitus: flexion of the knees, broad-based stance with pseudo-ataxic gait. Scoliosis was frequent (53%), such as divergent strabismus (76%) and hypermetropia (54%), stereotypic movements (89%), without obvious social withdrawal and decreased pain sensitivity (78%). Most of the patients did not develop expressive language, 35% saying few words. Epilepsy was frequent (59%), with a mean onset around 7.4 years of age, and often (62%) drug-resistant. Other medical issues were frequent: constipation (78%), and recurrent infections (89%), mainly lung. We delineate the clinical phenotype of duplication syndrome in a large series of 59 males. Pulmonary hypertension appeared as a cause of early death in these patients, advocating its screening early in life.

Download full-text PDF

Source
http://dx.doi.org/10.1136/jmedgenet-2017-104956DOI Listing
June 2018
122 Reads

Publication Analysis

Top Keywords

male patients
8
neurological features
8
morphological neurological
8
focus morphological
8
series males
8
recurrent infections
8
stereotypic movements
8
duplication syndrome
8
patients
7
narrow prominent
4
bridge thick
4
54% stereotypic
4
movements 89%
4
prominent nasal
4
89% obvious
4
nasal bridge
4
76% hypermetropia
4
large prominent
4
strabismus 76%
4
prominent ears
4

Similar Publications