A dominant mesomelic dysplasia associated with a 1.0-Mb microduplication of HOXD gene cluster at 2q31.1.
case_series · Level IV
Where this comes from
- Record sourced from PubMed, PMID 20577005.
- Also identified by DOI 10.1136/jmg.2009.074690.
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Abstract
A three-generation family with four patients affected by a novel mesomelic dysplasia was investigated for genome-wide DNA copy number variation profiles. This revealed a microduplication of a 1.0-Mb chromosomal segment at 2q31.1 spanning nine Homeo box D (HOXD) genes that co-segregated with the phenotype. Quantitative PCR analysis of a gene within this duplicated region showed consistent results. Mesomelic dysplasia Kantaputra type (MDK; MIM 156232),which shares some phenotypes with this family, has also been mapped to a chromosomal region comprising 2q31.1, raising the possibility that MDK and the condition observed in this family may be allelic.
Medical subject headings
- Base Pairing
- Chromosome Duplication
- Chromosomes, Human, Pair 2
- Genes, Dominant
- Homeodomain Proteins
- Multigene Family
- Osteochondrodysplasias