#608443
Table of Contents
A number sign (#) is used with this entry because of evidence that autosomal recessive intellectual developmental disorder-3 (MRT3) is caused by homozygous mutation in the CC2D1A gene (610055) on chromosome 19p13.
Basel-Vanagaite et al. (2003) studied nonsyndromic mental retardation in 4 consanguineous families of Israeli-Arab origin with 10 affected and 24 unaffected members. All families originated from the same small village and had the same family name. Basel-Vanagaite et al. (2006) reported 5 additional families with nonsyndromic mental retardation from the same village with the same family name, for a total of 16 affected individuals. The initial clinical presentation in all affected family members was psychomotor developmental delay in early childhood. All had no or only single words and were severely mentally retarded; none had autistic features or seizures, and there were no dysmorphic features.
In 4 consanguineous, interrelated Israeli-Arab families with nonsyndromic mental retardation from the same village, Basel-Vanagaite et al. (2003) established linkage with marker D19S840 at 19p13.2-p13.12 (maximum lod = 7.06 at theta = 0.00). All affected individuals were found to be homozygous for a common haplotype within a 2.4-Mb critical region between the markers D19S547 proximally and D19S1165 distally.
In 4 consanguineous Israeli-Arab families originally reported by Basel-Vanagaite et al. (2003) and 5 additional families with nonsyndromic mental retardation from the same village and with the same family name, Basel-Vanagaite et al. (2006) identified a common homozygous disease-bearing haplotype for the polymorphic markers RFX1 and D19S840 that defined a critical 0.9-Mb region between D19S564 and D19S547 on chromosome 19p13.12. Basel-Vanagaite et al. (2006) suggested that the disease was caused by a single mutation derived from a single ancestral founder in all the families.
In 9 consanguineous Israeli-Arab families with MRT3 from the same village and with the same family name, Basel-Vanagaite et al. (2006) analyzed 14 candidate genes located in a haplotype-defined critical region on chromosome 19p13.12. Homozygosity for a protein-truncating mutation in the CC2D1A gene (610055.0001) was identified in all affected family members; parents were heterozygous for the mutation.
Basel-Vanagaite, L., Alkelai, A., Straussberg, R., Magal, N., Inbar, D., Mahajna, M., Shohat, M. Mapping of a new locus for autosomal recessive non-syndromic mental retardation in the chromosomal region 19p13.12-p13.2: further genetic heterogeneity. J. Med. Genet. 40: 729-732, 2003. [PubMed: 14569116, related citations] [Full Text]
Basel-Vanagaite, L., Attia, R., Yahav, M., Ferland, R. J., Anteki, L., Walsh, C. A., Olender, T., Straussberg, R., Magal, N., Taub, E., Drasinover, V., Alkelai, A., Bercovich, D., Rechavi, G., Simon, A. J., Shohat, M. The CC2D1A, a member of a new gene family with C2 domains, is involved in autosomal recessive non-syndromic mental retardation. J. Med. Genet. 43: 203-210, 2006. [PubMed: 16033914, images, related citations] [Full Text]
Alternative titles; symbols
ORPHA: 88616; DO: 0081179;
| Location | Phenotype |
Phenotype MIM number |
Inheritance |
Phenotype mapping key |
Gene/Locus |
Gene/Locus MIM number |
|---|---|---|---|---|---|---|
| 19p13.12 | Intellectual developmental disorder, autosomal recessive 3 | 608443 | Autosomal recessive | 3 | CC2D1A | 610055 |
A number sign (#) is used with this entry because of evidence that autosomal recessive intellectual developmental disorder-3 (MRT3) is caused by homozygous mutation in the CC2D1A gene (610055) on chromosome 19p13.
Basel-Vanagaite et al. (2003) studied nonsyndromic mental retardation in 4 consanguineous families of Israeli-Arab origin with 10 affected and 24 unaffected members. All families originated from the same small village and had the same family name. Basel-Vanagaite et al. (2006) reported 5 additional families with nonsyndromic mental retardation from the same village with the same family name, for a total of 16 affected individuals. The initial clinical presentation in all affected family members was psychomotor developmental delay in early childhood. All had no or only single words and were severely mentally retarded; none had autistic features or seizures, and there were no dysmorphic features.
In 4 consanguineous, interrelated Israeli-Arab families with nonsyndromic mental retardation from the same village, Basel-Vanagaite et al. (2003) established linkage with marker D19S840 at 19p13.2-p13.12 (maximum lod = 7.06 at theta = 0.00). All affected individuals were found to be homozygous for a common haplotype within a 2.4-Mb critical region between the markers D19S547 proximally and D19S1165 distally.
In 4 consanguineous Israeli-Arab families originally reported by Basel-Vanagaite et al. (2003) and 5 additional families with nonsyndromic mental retardation from the same village and with the same family name, Basel-Vanagaite et al. (2006) identified a common homozygous disease-bearing haplotype for the polymorphic markers RFX1 and D19S840 that defined a critical 0.9-Mb region between D19S564 and D19S547 on chromosome 19p13.12. Basel-Vanagaite et al. (2006) suggested that the disease was caused by a single mutation derived from a single ancestral founder in all the families.
In 9 consanguineous Israeli-Arab families with MRT3 from the same village and with the same family name, Basel-Vanagaite et al. (2006) analyzed 14 candidate genes located in a haplotype-defined critical region on chromosome 19p13.12. Homozygosity for a protein-truncating mutation in the CC2D1A gene (610055.0001) was identified in all affected family members; parents were heterozygous for the mutation.
Basel-Vanagaite, L., Alkelai, A., Straussberg, R., Magal, N., Inbar, D., Mahajna, M., Shohat, M. Mapping of a new locus for autosomal recessive non-syndromic mental retardation in the chromosomal region 19p13.12-p13.2: further genetic heterogeneity. J. Med. Genet. 40: 729-732, 2003. [PubMed: 14569116] [Full Text: https://doi.org/10.1136/jmg.40.10.729]
Basel-Vanagaite, L., Attia, R., Yahav, M., Ferland, R. J., Anteki, L., Walsh, C. A., Olender, T., Straussberg, R., Magal, N., Taub, E., Drasinover, V., Alkelai, A., Bercovich, D., Rechavi, G., Simon, A. J., Shohat, M. The CC2D1A, a member of a new gene family with C2 domains, is involved in autosomal recessive non-syndromic mental retardation. J. Med. Genet. 43: 203-210, 2006. [PubMed: 16033914] [Full Text: https://doi.org/10.1136/jmg.2005.035709]
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