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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Mutation of the type X collagen gene (COL10A1) causes spondylometaphyseal dysplasia.

Spondylometaphyseal dysplasia (SMD) comprises a heterogeneous group of heritable skeletal dysplasias characterized by modifications of the vertebral bodies of the spine and metaphyses of the tubular bones. The genetic etiology of SMD is currently unknown; however, the type X collagen gene (COL10A1) is considered an excellent candidate, for two reasons: first, Schmid metaphyseal chondrodysplasia, a condition known to result from COL10A1 mutations, shows a significant phenotypic overlap with SMD; and, second, transgenic mice carrying deletions in type X collagen show SMD phenotypes. Hence, we examined the entire coding region of COL10A1 by direct sequencing of DNA from five unrelated patients with SMD and found a heterozygous missense mutation (Gly595Glu) cosegregating with the disease phenotype in one SMD family. This initial documented identification of a mutation in SMD expands our knowledge concerning the range of the pathological phenotypes that can be produced by aberrations of type X collagen (type X collagenopathy).[1]


  1. Mutation of the type X collagen gene (COL10A1) causes spondylometaphyseal dysplasia. Ikegawa, S., Nishimura, G., Nagai, T., Hasegawa, T., Ohashi, H., Nakamura, Y. Am. J. Hum. Genet. (1998) [Pubmed]
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