FOXG1 syndrome
Dernière mise à jour 28 mars 2023
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FOXG1 syndrome is a condition characterised by impaired development and structural brain abnormalities. Affected infants are small at birth, and their heads grow more slowly than normal, leading to an unusually small head size (microcephaly) by early childhood. The condition is associated with a particular pattern of brain malformations that includes a thin or underdeveloped connection between the right and left halves of the brain (a structure called the corpus callosum), reduced folds and grooves (gyri) on the surface of the brain, and a smaller than usual amount of brain tissue known as white matter.
Description
FOXG1 syndrome is a condition characterised by impaired development and structural brain abnormalities. Affected infants are small at birth, and their heads grow more slowly than normal, leading to an unusually small head size (microcephaly) by early childhood. The condition is associated with a particular pattern of brain malformations that includes a thin or underdeveloped connection between the right and left halves of the brain (a structure called the corpus callosum), reduced folds and grooves (gyri) on the surface of the brain, and a smaller than usual amount of brain tissue known as white matter.
FOXG1 syndrome affects most aspects of development, and children with the condition typically have severe intellectual disability. Abnormal or involuntary movements, such as jerking movements of the arms and legs and repeated hand motions, are common, and most affected children do not learn to sit or walk without assistance. Babies and young children with FOXG1 syndrome often have feeding problems, sleep disturbances, seizures, irritability, and excessive crying. Affected individuals may have autism spectrum disorder, which is characterised by limited communication and social interaction, including poor eye contact and a near absence of speech and language skills.
FOXG1 syndrome was previously described as a congenital variant of Rett syndrome, which is a similar disorder of brain development. Both disorders are characterised by impaired development, intellectual disability, and problems with communication and language. However, Rett syndrome is diagnosed almost exclusively in females, while FOXG1 syndrome affects both males and females. Rett syndrome also involves a period of apparently normal early development that does not occur in FOXG1 syndrome. Because of these differences, physicians and researchers now usually consider FOXG1 syndrome to be distinct from Rett syndrome.
Inheritance patterns
The source lists the following possible inheritance patterns: Autosomal dominant. More than one pattern can apply in different cases.
Related genes
Other names
FOXG1-related disorder
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Lectures complémentaires et références
- FOXG1 syndrome; MedlinePlus, National Library of Medicine.
- De Filippis R, Pancrazi L, Bjorgo K, Rosseto A, Kleefstra T, Grillo E, Panighini A, Cardarelli F, Meloni I, Ariani F, Mencarelli MA, Hayek J, Renieri A, Costa M, Mari F. Expanding the phenotype associated with FOXG1 mutations and in vivo FoxG1 chromatin-binding dynamics. Clin Genet. 2012 Oct;82(4):395-403. doi: 10.1111/j.1399-0004.2011.01810.x. Epub 2011 Dec 13.
- Florian C, Bahi-Buisson N, Bienvenu T. FOXG1-Related Disorders: From Clinical Description to Molecular Genetics. Mol Syndromol. 2012 Apr;2(3-5):153-163. doi: 10.1159/000327329. Epub 2011 Apr 29.
- Hou PS, hAilin DO, Vogel T, Hanashima C. Transcription and Beyond: Delineating FOXG1 Function in Cortical Development and Disorders. Front Cell Neurosci. 2020 Feb 25;14:35. doi: 10.3389/fncel.2020.00035. eCollection 2020.
- Kortum F, Das S, Flindt M, Morris-Rosendahl DJ, Stefanova I, Goldstein A, Horn D, Klopocki E, Kluger G, Martin P, Rauch A, Roumer A, Saitta S, Walsh LE, Wieczorek D, Uyanik G, Kutsche K, Dobyns WB. The core FOXG1 syndrome phenotype consists of postnatal microcephaly, severe mental retardation, absent language, dyskinesia, and corpus callosum hypogenesis. J Med Genet. 2011 Jun;48(6):396-406. doi: 10.1136/jmg.2010.087528. Epub 2011 Mar 25.
- Van der Aa N, Van den Bergh M, Ponomarenko N, Verstraete L, Ceulemans B, Storm K. Analysis of FOXG1 Is Highly Recommended in Male and Female Patients with Rett Syndrome. Mol Syndromol. 2011 Sep;1(6):290-293. doi: 10.1159/000330755. Epub 2011 Aug 9.
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