PMID- 8488840 OWN - NLM STAT- MEDLINE DCOM- 19930607 LR - 20200824 IS - 0002-9297 (Print) IS - 1537-6605 (Electronic) IS - 0002-9297 (Linking) VI - 52 IP - 5 DP - 1993 May TI - Narrowing the position of the Treacher Collins syndrome locus to a small interval between three new microsatellite markers at 5q32-33.1. PG - 907-14 AB - Treacher Collins syndrome (TCOF1) is an autosomal dominant disorder of craniofacial development, the features of which include conductive hearing loss and cleft palate. The TCOF1 locus has been localized to chromosome 5q32-33.2. In the present study we have used the combined techniques of genetic linkage analysis and fluorescence in situ hybridization (FISH) to more accurately define the TCOF1 critical region. Cosmids IG90 and SPARC, which map to distal 5q, encompass two and one hypervariable microsatellite markers, respectively. The heterozygosity values of these three markers range from .72 to .81. Twenty-two unrelated TCOF1 families have been analyzed for linkage to these markers. There is strong evidence demonstrating linkage to all three markers, the strongest support for positive linkage being provided by haplotyping those markers at the locus encompassed by the cosmid IG90 (Zmax = 19.65; theta = .010). FISH to metaphase chromosomes and interphase nuclei established that IG90 lies centromeric to SPARC. This information combined with the data generated by genetic linkage analysis demonstrated that the TCOF1 locus is closely flanked proximally by IG90 and distally by SPARC. FAU - Dixon, M J AU - Dixon MJ AD - Department of Cell and Structural Biology, University of Manchester, England. FAU - Dixon, J AU - Dixon J FAU - Houseal, T AU - Houseal T FAU - Bhatt, M AU - Bhatt M FAU - Ward, D C AU - Ward DC FAU - Klinger, K AU - Klinger K FAU - Landes, G M AU - Landes GM LA - eng GR - Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Hum Genet JT - American journal of human genetics JID - 0370475 RN - 0 (DNA, Satellite) SB - IM MH - Base Sequence MH - Centromere MH - Child MH - Chromosome Mapping/methods MH - *Chromosomes, Human, Pair 5 MH - Cosmids MH - DNA, Satellite/analysis MH - Female MH - Genetic Linkage MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Mandibulofacial Dysostosis/*genetics MH - Molecular Sequence Data MH - Pedigree MH - Polymerase Chain Reaction PMC - PMC1682053 EDAT- 1993/05/01 00:00 MHDA- 1993/05/01 00:01 PMCR- 1993/11/01 CRDT- 1993/05/01 00:00 PHST- 1993/05/01 00:00 [pubmed] PHST- 1993/05/01 00:01 [medline] PHST- 1993/05/01 00:00 [entrez] PHST- 1993/11/01 00:00 [pmc-release] PST - ppublish SO - Am J Hum Genet. 1993 May;52(5):907-14.