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Published in: Orphanet Journal of Rare Diseases 1/2011

Open Access 01-12-2011 | Review

X-linked disorders with cerebellar dysgenesis

Authors: Ginevra Zanni, Enrico S Bertini

Published in: Orphanet Journal of Rare Diseases | Issue 1/2011

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Abstract

X-linked disorders with cerebellar dysgenesis (XLCD) are a genetically heterogeneous and clinically variable group of disorders in which the hallmark is a cerebellar defect (hypoplasia, atrophy or dysplasia) visible on brain imaging, caused by gene mutations or genomic imbalances on the X-chromosome. The neurological features of XLCD include hypotonia, developmental delay, intellectual disability, ataxia and/or other cerebellar signs. Normal cognitive development has also been reported. Cerebellar dysgenesis may be isolated or associated with other brain malformations or multiorgan involvement. There are at least 15 genes on the X-chromosome that have been constantly or occasionally associated with a pathological cerebellar phenotype. 8 XLCD loci have been mapped and several families with X-linked inheritance have been reported. Recently, two recurrent duplication syndromes in Xq28 have been associated with cerebellar hypoplasia. Given the report of several forms of XLCD and the excess of males with ataxia, this group of conditions is probably underestimated and families of patients with neuroradiological and clinical evidence of a cerebellar disorder should be counseled for high risk of X-linked inheritance.
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Metadata
Title
X-linked disorders with cerebellar dysgenesis
Authors
Ginevra Zanni
Enrico S Bertini
Publication date
01-12-2011
Publisher
BioMed Central
Published in
Orphanet Journal of Rare Diseases / Issue 1/2011
Electronic ISSN: 1750-1172
DOI
https://doi.org/10.1186/1750-1172-6-24

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