PMID- 27173440 OWN - NLM STAT- MEDLINE DCOM- 20170314 LR - 20170817 IS - 1360-046X (Electronic) IS - 0268-8697 (Linking) VI - 30 IP - 5 DP - 2016 Oct TI - Impact of 1p/19q codeletion on the diagnosis and prognosis of different grades of meningioma. PG - 571-6 LID - 10.1080/02688697.2016.1181155 [doi] AB - BACKGROUND: Meningiomas are one of the most common tumours to affect the central nervous system. Genetic mutations are important in meningeal tumourigenesis, progression and prognosis. In this study, we aimed to examine the effect of 1p/19q deletion on the diagnosis and prognosis of meningioma subtypes using the fluorescence in situ hybridization (FISH) method. METHODS: Twenty-four patients with meningioma were retrospectively studied. Tumour samples were obtained from 10 typical, 11 atypical and three anaplastic malignant meningiomas. The most representative tumour sections were screened for 1p/19q deletion using the FISH method. RESULTS: Of the 24 patients, eight were women (33.3%) and 16 (66.7%) were men. The mean age was 56.6 years. The higher-grade meningioma was usually seen in males and had a higher rate of deletion on 1p (p = 0.001). There was a statistically significant difference between the grades and the rate of deletion on 19q (p = 0.042) and between the grades and the rates of polysomy, monosomy and amplification on 19q (p = 0.002; p = 0.001; p = 0.002, respectively). There was no statistical difference between 1p/19q codeletion and the grades of meningioma (p > 0.05). We detected higher level of Ki-67 in the condition of codeletion but did not find a statistical difference (p = 0.0553). CONCLUSION: Deletion on 1p, as well as deletion, polysomy, monosomy and amplification on 19q, are detected more frequently in high grade meningiomas. This amplification is most likely due to the amplification of oncogenes. FAU - Basaran, Recep AU - Basaran R AD - a Department of Neurosurgery , Istanbul Medeniyet University, Goztepe Education and Research Hospital , Istanbul , Turkey ; FAU - Uslu, Serap AU - Uslu S AD - b Department of Histology and Embryology , Istanbul Medeniyet University School of Medicine , Istanbul , Turkey ; FAU - Gucluer, Berrin AU - Gucluer B AD - c Department of Pathology , Istanbul Medeniyet University, Goztepe Education and Research Hospital , Istanbul , Turkey ; FAU - Onoz, Mustafa AU - Onoz M AD - d Department of Neurosurgery , Memorial Hospital , Istanbul , Turkey ; FAU - Isik, Nejat AU - Isik N AD - a Department of Neurosurgery , Istanbul Medeniyet University, Goztepe Education and Research Hospital , Istanbul , Turkey ; FAU - Tiryaki, Mehmet AU - Tiryaki M AD - e Department of Neurosurgery , Dr. Lutfi Kirdar Kartal Education and Research Hospital , Istanbul , Turkey ; FAU - Yakicier, Cengiz AU - Yakicier C AD - f Department of Molecular Genetics, Acibadem University School of Medicine , Istanbul , Turkey ; FAU - Sav, Aydin AU - Sav A AD - g Department of Pathology, Acibadem University School of Medicine , Istanbul , Turkey. FAU - Elmaci, Ilhan AU - Elmaci I AD - d Department of Neurosurgery , Memorial Hospital , Istanbul , Turkey ; LA - eng PT - Journal Article DEP - 20160513 PL - England TA - Br J Neurosurg JT - British journal of neurosurgery JID - 8800054 RN - 0 (Ki-67 Antigen) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Chromosome Aberrations MH - *Chromosome Deletion MH - Chromosomes, Human, Pair 1/*genetics MH - Chromosomes, Human, Pair 19/*genetics MH - Female MH - Gene Amplification MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Ki-67 Antigen/analysis MH - Male MH - Meningioma/*diagnosis/*genetics/therapy MH - Middle Aged MH - Neoplasm Grading MH - Prognosis MH - Retrospective Studies MH - Young Adult OTO - NOTNLM OT - 1p/19q OT - Codeletion OT - FISH OT - meningioma OT - oncogene OT - prognosis EDAT- 2016/05/14 06:00 MHDA- 2017/03/16 06:00 CRDT- 2016/05/14 06:00 PHST- 2016/05/14 06:00 [entrez] PHST- 2016/05/14 06:00 [pubmed] PHST- 2017/03/16 06:00 [medline] AID - 10.1080/02688697.2016.1181155 [doi] PST - ppublish SO - Br J Neurosurg. 2016 Oct;30(5):571-6. doi: 10.1080/02688697.2016.1181155. Epub 2016 May 13.