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Acheiropodia (ACHP), also known as Horn-Kolb Syndrome, Acheiropody and Aleijadinhos (Brazilian type), is an autosomal recessive disorder that results in hemimelia, a lack of formation of the distal extremities.
This is a congenital defect which consists of bilateral amputations of the distal upper and lower extremities, as well as aplasia of the hands and feet. It was first discovered and is prevalent almost exclusively in Brazil.
ACHP has been associated with a mutation in the LMBR1 gene. The disorder is inherited in an autosomal recessive manner. This means the defective gene responsible for the disorder is located on an autosome, and two copies of the defective gene (one inherited from each parent) are required in order to be born with the disorder. The parents of an individual with an autosomal recessive disorder both carry one copy of the defective gene, but usually do not experience any signs or symptoms of the disorder.
- Escamilla, Ma; Demille, Mc; Benavides, E; Roche, E; Almasy, L; Pittman, S; Hauser, J; Lew, Df; Freimer, Nb; Whittle, Mr (June 2000). "A minimalist approach to gene mapping: locating the gene for acheiropodia, by homozygosity analysis". American Journal of Human Genetics. 66 (6): 1995–2000. doi:10.1086/302921. PMC . PMID 10780921.
- Freire-Maia, A; Opitz, John M. (1981). "Historical note: the extraordinary handless and footless families of Brazil - 50 years of acheiropodia". American Journal of Medical Genetics. 9 (1): 31–41. doi:10.1002/ajmg.1320090108. PMID 7018242.
- Ianakiev P, van Baren MJ, Daly MJ, et al. (January 2001). "Acheiropodia is caused by a genomic deletion in C7orf2, the human orthologue of the Lmbr1 gene". Am. J. Hum. Genet. 68 (1): 38–45. doi:10.1086/316955. PMC . PMID 11090342.
- Overview at Orphanet
- CTD's Acheiropodia page from the Comparative Toxicogenomics Database
- PDF of Am. J. of Human Genetics article
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