PMID- 12509717 OWN - NLM STAT- MEDLINE DCOM- 20030507 LR - 20220210 IS - 1098-3600 (Print) IS - 1098-3600 (Linking) VI - 4 IP - 6 DP - 2002 Nov-Dec TI - Diagnostic testing for Prader-Willi syndrome and Angelman syndrome: a cost comparison. PG - 448-50 AB - PURPOSE: Considering cost as a factor, the authors evaluated three approaches to the diagnostic testing of Prader-Willi syndrome (PWS) and Angelman syndrome (AS). METHODS: The approaches evaluated were (1) DNA methylation studies followed by fluorescence in situ hybridization (FISH) for any positive DNA result, (2) FISH analysis followed by DNA testing for any negative result, and (3) simultaneous DNA testing and FISH analysis. RESULTS: Of 136 samples submitted for chromosome analysis and DNA methylation analysis for PWS or AS, 114 had a normal chromosome analysis and methylation studies, 9 were positive for AS, 3 were positive for PWS, and 7 had an abnormal chromosome analysis, but not deletion 15q11.2-q13, and normal methylation studies. On the basis of these results, the authors compared the cost of each testing strategy. CONCLUSION: DNA methylation studies followed by confirmation with FISH for any positive result yields a significant cost savings compared with the other approaches. FAU - Monaghan, Kristin G AU - Monaghan KG AD - Department of Medical Genetics, Henry Ford Hospital, Detroit, Michigan 48202, USA. FAU - Wiktor, Anne AU - Wiktor A FAU - Van Dyke, Daniel L AU - Van Dyke DL LA - eng PT - Comparative Study PT - Journal Article PL - United States TA - Genet Med JT - Genetics in medicine : official journal of the American College of Medical Genetics JID - 9815831 SB - IM MH - Angelman Syndrome/*diagnosis/economics/genetics MH - DNA Methylation MH - Diagnostic Techniques and Procedures/*economics MH - Humans MH - In Situ Hybridization, Fluorescence/economics MH - Prader-Willi Syndrome/*diagnosis/economics/genetics EDAT- 2003/01/02 04:00 MHDA- 2003/05/08 05:00 CRDT- 2003/01/02 04:00 PHST- 2003/01/02 04:00 [pubmed] PHST- 2003/05/08 05:00 [medline] PHST- 2003/01/02 04:00 [entrez] AID - S1098-3600(21)03023-9 [pii] AID - 10.1097/00125817-200211000-00009 [doi] PST - ppublish SO - Genet Med. 2002 Nov-Dec;4(6):448-50. doi: 10.1097/00125817-200211000-00009.