PMID- 8527398 OWN - NLM STAT- MEDLINE DCOM- 19960126 LR - 20191023 IS - 1045-2257 (Print) IS - 1045-2257 (Linking) VI - 14 IP - 2 DP - 1995 Oct TI - Isochromosome 17q demonstrated by interphase fluorescence in situ hybridization in primitive neuroectodermal tumors of the central nervous system. PG - 85-96 AB - We previously reported an i(17q) as a non-random finding in childhood primitive neuroectodermal tumors (PNETs) of the central nervous system. In the present study, we describe a two-color interphase fluorescence in situ hybridization (FISH) assay for detection of chromosome 17 abnormalities in tumors. Thirty-four PNETs were analyzed by FISH with a series of chromosome 17-specific probes which map to 17p13.3-17q25. The results from the FISH assay were then compared to the karyotypes prepared from the tumors. Ten of the 34 cases demonstrated an i(17q) by FISH and standard cytogenetics. Two PNETs were shown to have an i(17q) by FISH alone, and three additional tumors had deletions of 17p. Thus, a total of 15 of 34 (44%) of the PNETs in this series had a deletion of 17p. This study confirms and extends our previous reports that an i(17q) is the most common cytogenetic abnormality in PNETs. The interphase FISH assay which we employed will have clinical utility for diagnosis of children with malignant brain tumors, and it may be used for identification of tumors with 17p deletions for molecular studies aimed at identifying disease genes. FAU - Biegel, J A AU - Biegel JA AD - Division of Human Genetics and Molecular Biology, Children's Hospital of Philadelphia, PA 19104, USA. FAU - Rorke, L B AU - Rorke LB FAU - Janss, A J AU - Janss AJ FAU - Sutton, L N AU - Sutton LN FAU - Parmiter, A H AU - Parmiter AH LA - eng GR - CA13539/CA/NCI NIH HHS/United States GR - CA46274/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Genes Chromosomes Cancer JT - Genes, chromosomes & cancer JID - 9007329 RN - 0 (Genetic Markers) SB - IM MH - Adolescent MH - Central Nervous System Neoplasms/*genetics/pathology MH - Child MH - Chromosome Mapping MH - *Chromosomes, Human, Pair 17 MH - Female MH - Genetic Markers MH - Humans MH - In Situ Hybridization, Fluorescence MH - Interphase MH - *Isochromosomes MH - Karyotyping MH - Male MH - Neuroectodermal Tumors, Primitive/*genetics/pathology MH - Sequence Deletion EDAT- 1995/10/01 00:00 MHDA- 1995/10/01 00:01 CRDT- 1995/10/01 00:00 PHST- 1995/10/01 00:00 [pubmed] PHST- 1995/10/01 00:01 [medline] PHST- 1995/10/01 00:00 [entrez] AID - 10.1002/gcc.2870140202 [doi] PST - ppublish SO - Genes Chromosomes Cancer. 1995 Oct;14(2):85-96. doi: 10.1002/gcc.2870140202.