Article (Scientific journals)
Autosomal recessive primary microcephaly due to ASPM mutations: An update.
Letard, Pascaline; Drunat, Severine; Vial, Yoann et al.
2018In Human Mutation
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Keywords :
ASPM; MCPH; brain development; brain imaging; centrosome; intellectual disability; primary microcephaly
Abstract :
[en] Autosomal recessive microcephaly or MicroCephaly Primary Hereditary (MCPH) is a genetically heterogeneous neurodevelopmental disorder characterized by a reduction in brain volume, indirectly measured by an occipitofrontal circumference (OFC) 2 standard deviations or more below the age- and sex-matched mean (-2SD) at birth and -3SD after 6 months, and leading to intellectual disability of variable severity. The Abnormal SPindle-like Microcephaly gene (ASPM), the human ortholog of the Drosophila melanogaster 'abnormal spindle' gene (asp), encodes ASPM, a protein localized at the centrosome of apical neuroprogenitor cells and involved in spindle pole positioning during neurogenesis. Loss-of-function mutations in ASPM cause MCPH5, which affects the majority of all MCPH patients worldwide. Here, we report 47 unpublished patients from 39 families carrying 28 new ASPM mutations, and conduct an exhaustive review of the molecular, clinical, neuroradiological and neuropsychological features of the 282 families previously reported (with 161 distinct ASPM mutations). Furthermore, we show that ASPM-related microcephaly is not systematically associated with intellectual deficiency and discuss the association between the structural brain defects (strong reduction in cortical volume and surface area) that modify the cortical map of these patients and their cognitive abilities. This article is protected by copyright. All rights reserved.
Disciplines :
Genetics & genetic processes
Author, co-author :
Letard, Pascaline
Drunat, Severine
Vial, Yoann
Duerinckx, Sarah
Ernault, Anais
Amram, Daniel
Arpin, Stephanie
Bertoli, Marta
Busa, Tiffany
Ceulemans, Berten
Desir, Julie
Doco-Fenzy, Martine
Elalaoui, Siham Chafai
Devriendt, Koenraad
Faivre, Laurence
Francannet, Christine
Genevieve, David
Gerard, Marion
Gitiaux, Cyril
Julia, Sophie
Lebon, Sebastien
Lubala, Toni
Mathieu-Dramard, Michele
Maurey, Helene
Metreau, Julia
Nasserereddine, Sanaa
Nizon, Mathilde
PIERQUIN, Geneviève ;  Centre Hospitalier Universitaire de Liège - CHU > Service de génétique
Pouvreau, Nathalie
Rivier-Ringenbach, Clothilde
Rossi, Massimiliano
Schaefer, Elise
Sefiani, Abdelaziz
Sigaudy, Sabine
Sznajer, Yves
Tunca, Yusuf
Guilmin Crepon, Sophie
Alberti, Corinne
Elmaleh-Berges, Monique
Benzacken, Brigitte
Wollnick, Bernd
Woods, C. Geoffrey
Rauch, Anita
Abramowicz, Marc
El Ghouzzi, Vincent
Gressens, Pierre
Verloes, Alain
Passemard, Sandrine
More authors (38 more) Less
Language :
English
Title :
Autosomal recessive primary microcephaly due to ASPM mutations: An update.
Publication date :
2018
Journal title :
Human Mutation
ISSN :
1059-7794
eISSN :
1098-1004
Publisher :
John Wiley & Sons, Hoboken, United States - New Jersey
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
This article is protected by copyright. All rights reserved.
Available on ORBi :
since 23 January 2018

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