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

Genetic heterogeneity in multiple epiphyseal dysplasia.

Multiple epiphyseal dysplasia (MED) comprises a group of hereditary chondrodysplasias in which there are major anatomic abnormalities of the long tubular bones. The Fairbank and Ribbing types are the most frequently cited types of MED. They are primarily defined radiographically and are autosomal dominant conditions. Recently, MED in one family was shown to map to the pericentromeric region of chromosome 19 and is probably allelic to pseudoachondroplasia. We have tested linkage with six short tandem repeat markers from chromosome 19 to autosomal dominant MED in one four-generation family and to MED in a unique family with three of seven siblings affected and with unaffected parents. Autosomal dominant MED in family 1 was linked with a maximum LOD score, at D19S212, of 3.22 at a recombination fraction (theta) of .00. Linkage to chromosome 19 was excluded with MED in the other family, under both autosomal recessive and autosomal dominant, with either reduced-penetrance or germ line-mosaicism models. Linkage to candidate genes COL9A1, COL9A2, and COL11A2 was tested and excluded for both genetic models in this family. COL11A1 was excluded under a recessive model. We have confirmed linkage of autosomal dominant Fairbank MED to chromosome 19 and have demonstrated that MED is genetically heterogeneous.[1]


  1. Genetic heterogeneity in multiple epiphyseal dysplasia. Deere, M., Blanton, S.H., Scott, C.I., Langer, L.O., Pauli, R.M., Hecht, J.T. Am. J. Hum. Genet. (1995) [Pubmed]
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