PMID- 22551918 OWN - NLM STAT- MEDLINE DCOM- 20120719 LR - 20211021 IS - 0722-5091 (Print) IS - 0722-5091 (Linking) VI - 31 IP - 3 DP - 2012 May-Jun TI - Identification of t(1;19)(q12;p13) and ploidy changes in an ependymosarcoma: a cytogenetic evaluation. PG - 142-5 AB - Gliosarcoma, a recognized subtype of glioblastoma, is a biphasic tumor exhibiting distinct glial and sarcomatous components. Ependymosarcomas are rarer, biphasic ependymal tumors exhibiting sarcomatous change. Genetic abnormalities associated with this curious phenotype are not well understood. We are presenting the first karyotype of ependymosarcoma with identification of a clonal t(1;19)(q12;p13). Fluorescence in situ hybridization (FISH) was performed with a probe set targeting 1q23 and 19p13.3. Although the tumor did not show evidence of t(1;19)(q23;p13.3) by FISH, increased ploidy was a feature of the sarcomatous component. On clinical followup the patient is doing well without evidence of recurrence 55 months after initial resection, and postoperative treatment with irradiation and temozolomide. The significance of the genetic alterations we describe associated with sarcomatoid change in ependymal neoplasms, and ultimately their prognostic relevance, merits further study. FAU - Tabbarah, Abeer Z AU - Tabbarah AZ AD - Department of Pathology, George Washington University, Washington, D.C., USA. FAU - Carlson, Austin W AU - Carlson AW FAU - Oviedo, Angelica AU - Oviedo A FAU - Ketterling, Rhett P AU - Ketterling RP FAU - Rodriguez, Fausto J AU - Rodriguez FJ LA - eng GR - P30 CA006973/CA/NCI NIH HHS/United States PT - Case Reports PT - Journal Article PL - Germany TA - Clin Neuropathol JT - Clinical neuropathology JID - 8214420 SB - IM MH - Abnormal Karyotype MH - Adolescent MH - Brain Neoplasms/genetics/pathology MH - Chromosomes, Human, Pair 1/*genetics MH - Chromosomes, Human, Pair 19/*genetics MH - Ependymoma/*genetics/pathology MH - Female MH - Gliosarcoma/*genetics/pathology MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - *Ploidies PMC - PMC3657470 MID - NIHMS448282 EDAT- 2012/05/04 06:00 MHDA- 2012/07/20 06:00 PMCR- 2012/05/01 CRDT- 2012/05/04 06:00 PHST- 2012/05/04 06:00 [entrez] PHST- 2012/05/04 06:00 [pubmed] PHST- 2012/07/20 06:00 [medline] PHST- 2012/05/01 00:00 [pmc-release] AID - 9473 [pii] AID - 10.5414/np300451 [doi] PST - ppublish SO - Clin Neuropathol. 2012 May-Jun;31(3):142-5. doi: 10.5414/np300451.