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Exclusion of BMP6 as a candidate gene for cleidocranial dysplasia

✍ Scribed by Innis, Jeffrey W.; Asher,, James H.; Liang, Yong; Wang, Aihui; Wilke, Charles M.; Dierick, Herman A.; Kazen-Gillespie, Kristin; Sheldon, Susan; Glover, Thomas W.; Friedman, Thomas B.

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 47 KB
Volume: 71
Category: Article
ISSN: 0148-7299
DOI: 10.1002/(sici)1096-8628(19970822)71:3<292::aid-ajmg9>3.0.co;2-w

No coin nor oath required. For personal study only.

✦ Synopsis

Cleidocranial dysplasia (CCD) is an autosomal dominant, generalized skeletal dysplasia in humans that has been mapped to the short arm of chromosome 6. We report linkage of a CCD mutation to 6p21 in a large family and exclude the bone morphogenetic protein 6 gene (BMP6) as a candidate for the disease by cytogenetic localization and genetic recombination. CCD was linked with a maximal two-point LOD score of 7.22 with marker D6S452 at = 0. One relative with a recombination between D6S451 and D6S459 and another individual with a recombination between D6S465 and CCD places the mutation within a 7 cM region between D6S451 and D6S465 at 6p21. A phage P1 genomic clone spanning most of the BMP6 gene hybridized to chromosome 6 in band region p23-p24 using FISH analysis, placing this gene cytogenetically more distal than the region of linkage for CCD. We derived a new polymorphic marker from this same P1 clone and found recombinations between the marker and CCD in this family. The results confirm the map position of CCD on 6p21, further refine the CCD genetic interval by identifying a recombination between D6S451 and D6S459, and exclude BMP6 as a candidate gene.

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