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

ABSTRACT: 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.

SUBMITTER: Nicolas E 

PROVIDER: S-EPMC2987462 | biostudies-literature | 2010 Oct

REPOSITORIES: biostudies-literature

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

Nicolas Elsa E   Poitelon Yannick Y   Chouery Eliane E   Salem Nabiha N   Levy Nicolas N   Mégarbané André A   Delague Valérie V  

European journal of human genetics : EJHG 20100609 10

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 l  ...[more]

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