Autozygosity mapping of a large consanguineous Pakistani family reveals a novel non-syndromic autosomal recessive mental retardation locus on 11p15-tel
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Autosomal recessive inherited mental retardation is an extremely heterogeneous disease and accounts for approximately 25% of all non-syndromic mental retardation cases. Autozygosity mapping of a large consanguineous Pakistani family revealed a novel locus for non-syndromic autosomal recessive mental retardation (NS-ARMR). The affected individuals showed low IQ and cognitive impairment without any neurological, skeletal, and biochemical abnormalities. All known NS-ARMR genes were excluded by STS markers, so autozygosity mapping by microarray single-nucleotide polymorphism (SNP) analysis were done in all sampled individuals in the family. The nuclear central loop in the five generation family showed homozygosity for a 6-Mb telomeric region on 11p15, whereas all other linkage regions were excluded by calculation of logarithm of odds (LOD) for the SNP microarray data. A maximum LOD score of Z¿=¿3.31 was calculated for the mapped region. These results suggest a novel genetic locus, MRT17, for NS-ARMR.
|Number of pages||5|
|Publication status||Published - 2011|
- Chromosome Mapping, Chromosomes, Human, Pair 11, Comparative Genomic Hybridization, Consanguinity, Family, Female, Genes, Recessive, Genetic Loci, Humans, Intellectual Disability, Male, Pakistan, Pedigree, Syndrome, Telomere