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Eur J Hum Genet. 2010 Oct;18(10):1107-13. doi: 10.1038/ejhg.2010.82. Epub 2010 Jun 9.

CAMOS, a nonprogressive, autosomal recessive, congenital cerebellar ataxia, is caused by a mutant zinc-finger protein, ZNF592.

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Faculté de Médecine de la Timone, INSERM UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Université de la Méditerranée, Marseille, France.


CAMOS (Cerebellar Ataxia with Mental retardation, Optic atrophy and Skin abnormalities) is a rare autosomal recessive syndrome characterized by a nonprogressive congenital cerebellar ataxia associated with mental retardation, optic atrophy, and skin abnormalities. Using homozygosity mapping in a large inbred Lebanese Druze family, we previously reported the mapping of the disease gene at chromosome 15q24-q26 to a 3.6-cM interval between markers D15S206 and D15S199. Screening of candidate genes lying in this region led to the identification of a homozygous p.Gly1046Arg missense mutation in ZNF592, in all five affected individuals of the family. ZNF592 encodes a 1267-amino-acid zinc-finger (ZnF) protein, and the mutation, located within the eleventh ZnF, is predicted to affect the DNA-binding properties of ZNF592. Although the precise role of ZNF592 remains to be determined, our results suggest that ZNF592 is implicated in a complex developmental pathway, and that the mutation is likely to disturb the highly orchestrated regulation of genes during cerebellar development, by either disrupting interactions with target DNA or with a partner protein.

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