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Brachydactyly A-1 mutations restricted to the central region of the N-terminal active fragment of Indian Hedgehog.

Authors: Byrnes, Ashley M  Racacho, Lemuel  Grimsey, Allison  Hudgins, Louanne  Kwan, Andrea C  Sangalli, Michel  Kidd, Alexa  Yaron, Yuval  Lau, Yu-Lung  Nikkel, Sarah M  Bulman, Dennis E 
Citation: Byrnes AM, etal., Eur J Hum Genet. 2009 Sep;17(9):1112-20. doi: 10.1038/ejhg.2009.18. Epub 2009 Mar 11.
Pubmed: (View Article at PubMed) PMID:19277064
DOI: Full-text: DOI:10.1038/ejhg.2009.18

Mutations in the gene Indian Hedgehog (IHH) that cause Brachydactyly A-1 (BDA1) have been restricted to a specific region of the N-terminal active fragment of Indian Hedgehog involving codons 95, 100, 131, and 154. We describe two novel mutations in codons 128 and 130, not previously implicated in BDA1. Furthermore, we identified an independent mutation at codon 131 and we also describe a New Zealand family, which carries the 'Farabee' founder mutation and haplotype. All of the BDA1 mutations occur in a restricted area of the N-terminal active fragment of the IHH and are in contrast to those mutations causing an autosomal recessive acrocapitofemoral dysplasia, whose mutations are located at the distal N- and C-terminal regions of IHH-N and are physically separated from the BDA1-causing mutations. The identification of multiple independent mutations in codons 95, 100, and now in 131, implicate a discrete function for this region of the protein. Finally, we present a clinical review of all reported and confirmed cases of BDA1, highlighting features of the disorder, which add to the spectrum of the IHH mutations.


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RGD Object Information
RGD ID: 12910964
Created: 2017-06-30
Species: All species
Last Modified: 2017-06-30
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.