PMID- 8882776 OWN - NLM STAT- MEDLINE DCOM- 19961213 LR - 20190905 IS - 0148-7299 (Print) IS - 0148-7299 (Linking) VI - 62 IP - 3 DP - 1996 Mar 29 TI - FISH detection of chromosome 15 deletions in Prader-Willi and Angelman syndromes. PG - 217-23 AB - We have evaluated fluorescence in situ hybridization (FISH) analysis for the clinical laboratory detection of the 15q11-q13 deletion seen in Prader-Willi syndrome (PWS) and Angelman syndrome (AS) using probes for loci D15S11, SNRPN, D15S10, and GABRB3. In a series of 118 samples from patients referred for PWS or AS, 29 had deletions by FISH analysis. These included two brothers with a paternally transmitted deletion detectable with the probe for SNRPN only. G-banding analysis was less sensitive for deletion detection but useful in demonstrating other cytogenetic alterations in four cases. Methylation and CA-repeat analyses of 15q11-q13 were used to validate the FISH results. Clinical findings of patients with deletions were variable, ranging from newborns with hypotonia as the only presenting feature to children who were classically affected. We conclude that FISH analysis is a rapid and reliable method for detection of deletions within 15q11-q13 and whenever a deletion is found, FISH analysis of parental chromosomes should also be considered. FAU - Teshima, I AU - Teshima I AD - Department of Pediatrics, Hospital for Sick Children, Toronto, Ontario, Canada. FAU - Chadwick, D AU - Chadwick D FAU - Chitayat, D AU - Chitayat D FAU - Kobayashi, J AU - Kobayashi J FAU - Ray, P AU - Ray P FAU - Shuman, C AU - Shuman C FAU - Siegel-Bartelt, J AU - Siegel-Bartelt J FAU - Strasberg, P AU - Strasberg P FAU - Weksberg, R AU - Weksberg R LA - eng PT - Journal Article PL - United States TA - Am J Med Genet JT - American journal of medical genetics JID - 7708900 SB - IM EIN - Am J Med Genet 1996 Aug 23;64(3):527 MH - Angelman Syndrome/*genetics MH - Chromosome Banding MH - *Chromosome Deletion MH - *Chromosomes, Human, Pair 15 MH - Dinucleotide Repeats MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Methylation MH - Prader-Willi Syndrome/*genetics EDAT- 1996/03/29 00:00 MHDA- 1996/03/29 00:01 CRDT- 1996/03/29 00:00 PHST- 1996/03/29 00:00 [pubmed] PHST- 1996/03/29 00:01 [medline] PHST- 1996/03/29 00:00 [entrez] AID - 10.1002/(sici)1096-8628(19960329)62:3<216::aid-ajmg3>3.3.co;2-0 [doi] PST - ppublish SO - Am J Med Genet. 1996 Mar 29;62(3):217-23. doi: 10.1002/(sici)1096-8628(19960329)62:3<216::aid-ajmg3>3.3.co;2-0.