PMID- 12567408 OWN - NLM STAT- MEDLINE DCOM- 20030807 LR - 20200930 IS - 1552-4825 (Print) IS - 1552-4825 (Linking) VI - 117A IP - 2 DP - 2003 Mar 1 TI - Molecular characterization of a 12q22-q24 deletion associated with congenital deafness: confirmation and refinement of the DFNA25 locus. PG - 122-6 AB - The DFNA25 locus for autosomal dominant nonsyndromic hereditary hearing loss has been mapped to 12q21-q24 by linkage analysis. A de novo deletion in a six-year-old boy with congenital hearing loss as well as mental and motor retardation now provides independent confirmation of this genetic localization and narrows the critical interval to 13 cM in the 12q22-q24.1 region. Mapping of the deletion was performed using fluorescence in situ hybridization (FISH) analysis with region-specific yeast artificial chromosome (YAC) clones. Ten YACs 929_e_4, 959_c_3, 746_h_7, 817_h_10, 886_a_6, 916_h_9, 969_c_12, 747_e_2, 812_h_12, and 959_f_8 were absent from one chromosome 12 from the patient. Molecular analyses of eight polymorphic markers helped to narrow down the breakpoints and demonstrated that the derivative chromosome 12 is of paternal origin. Several known genes including ATP2A2, UBE3B, and VR-OAC that map in the 12q22-q24.1 region are included in the deletion. These results provide evidence that haploinsufficiency for a gene or genes in 12q22-q24.1 is associated with autosomal dominant deafness. CI - Copyright 2003 Wiley-Liss, Inc. FAU - Petek, Erwin AU - Petek E AD - Institute of Medical Biology and Human Genetics, Karl-Franzens University of Graz, Graz, Austria. petek@kfunigraz.ac.at FAU - Windpassinger, Christian AU - Windpassinger C FAU - Mach, Monika AU - Mach M FAU - Rauter, Ludwig AU - Rauter L FAU - Scherer, Stephen W AU - Scherer SW FAU - Wagner, Klaus AU - Wagner K FAU - Kroisel, Peter M AU - Kroisel PM LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Med Genet A JT - American journal of medical genetics. Part A JID - 101235741 SB - IM MH - Child MH - Chromosome Banding MH - *Chromosome Deletion MH - Chromosome Mapping/methods MH - Chromosomes, Human, Pair 12/*genetics MH - Family Health MH - Female MH - Genes, Dominant/genetics MH - Genotype MH - Hearing Loss/congenital/*genetics/pathology MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Microsatellite Repeats MH - Pedigree EDAT- 2003/02/05 04:00 MHDA- 2003/08/09 05:00 CRDT- 2003/02/05 04:00 PHST- 2003/02/05 04:00 [pubmed] PHST- 2003/08/09 05:00 [medline] PHST- 2003/02/05 04:00 [entrez] AID - 10.1002/ajmg.a.10155 [doi] PST - ppublish SO - Am J Med Genet A. 2003 Mar 1;117A(2):122-6. doi: 10.1002/ajmg.a.10155.