PMID- 27553586 OWN - NLM STAT- MEDLINE DCOM- 20170314 LR - 20181202 IS - 1423-0291 (Electronic) IS - 1015-2008 (Linking) VI - 84 IP - 2 DP - 2017 TI - Multicentric Glioma Develops via a Mutant IDH1-Independent Pathway: Immunohistochemical Study of Multicentric Glioma. PG - 99-107 LID - 10.1159/000447951 [doi] AB - Multicentric gliomas are very rare. Due to differences in their tumor types they remain enigmatic. We focused on the pathogenesis of multicentric gliomas and compared their immunoprofile with that of solitary gliomas. This retrospective study included 6 males and 8 females with multicentric glioma (8 glioblastomas, 2 anaplastic astrocytomas, 4 diffuse astrocytomas). Their age ranged from 27 to 75 years and all were treated between 2004 and June 2015. The expression of mutant isocitrate dehydrogenase 1 (IDH1), alpha-thalassemia X-linked intellectual disability (ATRX), p53, phosphatase and tensin homolog (PTEN), and epidermal growth factor receptor (EGFR) was examined immunohistochemically; for 1p19q analysis we used fluorescence in situ hybridization (FISH). In all patients, immunohistochemical staining was negative for mutant IDH1 and cytoplasmic PTEN; only 1 patient (7.1%) manifested nuclear PTEN positivity. FISH for 1p19q codeletion was negative in all 9 examined samples; 5 of 14 specimens (35.7%) were p53-positive, 9 (64.3%) were EGFR-positive, and 4 (28.6%) were ATRX-negative. The MIB-1 labeling index was 0.9-15.6% for grades II and III, and ranged between 17.3 and 52.4% for glioblastoma. Our results suggest that the pathogenesis of multicentric gliomas is different from the mutant IDH1-R132H pathogenesis of lower-grade glioma and secondary glioblastomas. More studies are needed to confirm the molecular mechanisms underlying the pathogenesis of multicentric glioma. CI - (c) 2016 S. Karger AG, Basel. FAU - Karlowee, Vega AU - Karlowee V AD - Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan. FAU - Amatya, Vishwa Jeet AU - Amatya VJ FAU - Hirano, Hirofumi AU - Hirano H FAU - Takayasu, Takeshi AU - Takayasu T FAU - Nosaka, Ryo AU - Nosaka R FAU - Kolakshyapati, Manish AU - Kolakshyapati M FAU - Yoshihiro, Masako AU - Yoshihiro M FAU - Takeshima, Yukio AU - Takeshima Y FAU - Sugiyama, Kazuhiko AU - Sugiyama K FAU - Arita, Kazunori AU - Arita K FAU - Kurisu, Kaoru AU - Kurisu K FAU - Yamasaki, Fumiyuki AU - Yamasaki F LA - eng PT - Journal Article DEP - 20160824 PL - Switzerland TA - Pathobiology JT - Pathobiology : journal of immunopathology, molecular and cellular biology JID - 9007504 RN - 0 (Nuclear Proteins) RN - 0 (Tumor Suppressor Protein p53) RN - EC 1.1.1.41 (Isocitrate Dehydrogenase) RN - EC 1.1.1.42. (IDH1 protein, human) RN - EC 2.7.10.1 (EGFR protein, human) RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 3.1.3.67 (PTEN Phosphohydrolase) RN - EC 3.6.4.- (DNA Helicases) RN - EC 3.6.4.12 (ATRX protein, human) RN - EC 3.6.4.12 (X-linked Nuclear Protein) SB - IM MH - Adult MH - Aged MH - Astrocytoma/*metabolism/pathology MH - Brain Neoplasms/*metabolism/pathology MH - DNA Helicases/metabolism MH - ErbB Receptors/metabolism MH - Female MH - Glioblastoma/*metabolism/pathology MH - Humans MH - Immunohistochemistry MH - Isocitrate Dehydrogenase/*metabolism MH - Male MH - Middle Aged MH - Nuclear Proteins/metabolism MH - PTEN Phosphohydrolase/metabolism MH - Tumor Suppressor Protein p53/metabolism MH - X-linked Nuclear Protein EDAT- 2016/08/25 06:00 MHDA- 2017/03/16 06:00 CRDT- 2016/08/25 06:00 PHST- 2016/02/24 00:00 [received] PHST- 2016/06/22 00:00 [accepted] PHST- 2016/08/25 06:00 [pubmed] PHST- 2017/03/16 06:00 [medline] PHST- 2016/08/25 06:00 [entrez] AID - 000447951 [pii] AID - 10.1159/000447951 [doi] PST - ppublish SO - Pathobiology. 2017;84(2):99-107. doi: 10.1159/000447951. Epub 2016 Aug 24.