PMID- 11280946 OWN - NLM STAT- MEDLINE DCOM- 20010809 LR - 20220210 IS - 1098-3600 (Print) IS - 1098-3600 (Linking) VI - 3 IP - 2 DP - 2001 Mar-Apr TI - A diagnostic approach to identifying submicroscopic 7p21 deletions in Saethre-Chotzen syndrome: fluorescence in situ hybridization and dosage-sensitive Southern blot analysis. PG - 102-8 AB - PURPOSE: To report on the use of fluorescence in situ hybridization (FISH) and dosage-sensitive Southern blot analysis in the molecular diagnosis of patients with Saethre-Chotzen syndrome. METHODS: FISH and dosage-sensitive Southern blot analysis utilizing TWIST gene probes were performed on patients with Saethre-Chotzen syndrome but without an identifiable TWIST sequence variation. RESULTS: Four unrelated patients with a deletion of the TWIST gene were identified by Southern blot; one of them had a complex chromosomal rearrangement involving 7p21 and no apparent deletion by FISH, suggesting a smaller deletion in the region including the TWIST gene. A fifth patient had an abnormal TWIST gene fragment on Southern blot analysis that segregated with the disease in the family; FISH was normal in this patient, suggesting a partial deletion or rearrangement in or near the gene. CONCLUSION: FISH and dosage-sensitive Southern blot analysis are useful diagnostic tools in Saethre-Chotzen syndrome without TWIST sequence variation. FAU - Gripp, K W AU - Gripp KW AD - Division of Human Genetics and Molecular Biology, Abramson BLDG 1002, The Children's Hospital of Philadelphia, 34th & Civic Center Blvd., Philadelphia, PA 19104, USA. FAU - Kasparcova, V AU - Kasparcova V FAU - McDonald-McGinn, D M AU - McDonald-McGinn DM FAU - Bhatt, S AU - Bhatt S FAU - Bartlett, S P AU - Bartlett SP FAU - Storm, A L AU - Storm AL FAU - Drumheller, T C AU - Drumheller TC FAU - Emanuel, B S AU - Emanuel BS FAU - Zackai, E H AU - Zackai EH FAU - Stolle, C A AU - Stolle CA LA - eng GR - M01-RR00240/RR/NCRR NIH HHS/United States PT - Case Reports PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Genet Med JT - Genetics in medicine : official journal of the American College of Medical Genetics JID - 9815831 RN - 0 (Nuclear Proteins) RN - 0 (TWIST1 protein, human) RN - 0 (Transcription Factors) RN - 0 (Twist-Related Protein 1) SB - IM MH - Acrocephalosyndactylia/*diagnosis/*genetics MH - Adolescent MH - Adult MH - Blotting, Southern MH - Child MH - Child, Preschool MH - Chromosomes/ultrastructure MH - *Chromosomes, Human, Pair 7 MH - Dose-Response Relationship, Drug MH - Female MH - *Gene Deletion MH - Humans MH - In Situ Hybridization MH - In Situ Hybridization, Fluorescence MH - Infant MH - Infant, Newborn MH - Karyotyping MH - Male MH - *Nuclear Proteins MH - Pedigree MH - Sequence Analysis, DNA MH - Transcription Factors/genetics MH - Twist-Related Protein 1 EDAT- 2001/04/03 10:00 MHDA- 2001/08/10 10:01 CRDT- 2001/04/03 10:00 PHST- 2001/04/03 10:00 [pubmed] PHST- 2001/08/10 10:01 [medline] PHST- 2001/04/03 10:00 [entrez] AID - S1098-3600(21)00874-1 [pii] AID - 10.1097/00125817-200103000-00003 [doi] PST - ppublish SO - Genet Med. 2001 Mar-Apr;3(2):102-8. doi: 10.1097/00125817-200103000-00003.