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. 1994 Aug;55(2):372–378.

A YAC contig encompassing the Treacher Collins syndrome critical region at 5q31.3-32.

J Dixon 1, A J Gladwin 1, S K Loftus 1, J H Riley 1, R Perveen 1, J J Wasmuth 1, R Anand 1, M J Dixon 1
PMCID: PMC1918363  PMID: 8037214

Abstract

Treacher Collins syndrome (TCOF1) is an autosomal dominant disorder of craniofacial development the features of which include conductive hearing loss and cleft palate. Previous studies have localized the TCOF1 locus between D5S519 (proximal) and SPARC (distal), a region of 22 centirays as estimated by radiation hybrid mapping. In the current investigation we have created a contig across the TCOF1 critical region, using YAC clones. Isolation of a novel short tandem repeat polymorphism corresponding to the end of one of the YACs has allowed us to reduce the size of the critical region to approximately 840 kb, which has been covered with three nonchimeric YACs. Restriction mapping has revealed that the region contains a high density of clustered rare-cutter restriction sites, suggesting that it may contain a number of different genes. The results of the present investigation have further allowed us to confirm that the RPS14 locus lies proximal to the critical region and can thereby be excluded from a role in the pathogenesis of TCOF1, while ANX6 lies within the TCOF1 critical region and remains a potential candidate for the mutated gene.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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