PMID- 22157622 OWN - NLM STAT- MEDLINE DCOM- 20120213 LR - 20211021 IS - 1554-6578 (Electronic) IS - 0022-3069 (Print) IS - 0022-3069 (Linking) VI - 71 IP - 1 DP - 2012 Jan TI - The importance of 10q status in an outcomes-based comparison between 1p/19q fluorescence in situ hybridization and polymerase chain reaction-based microsatellite loss of heterozygosity analysis of oligodendrogliomas. PG - 73-82 LID - 10.1097/NEN.0b013e318240fa65 [doi] AB - 1p/19q codeletion is a favorable prognostic marker of oligodendrogliomas. Although fluorescence in situ hybridization (FISH) and microsatellite-based polymerase chain reaction (PCR) for loss of heterozygosity (LOH) are common methods to test for 1p/19q codeletion, it is unclear which test is better at prognostic stratification. This study analyzed outcomes of 111 oligodendrogliomas with both 1p/19q FISH and LOH done at the time of diagnosis. Overall concordance between the 2 assays was 81.1%. In grade III oligodendrogliomas, LOH was better than FISH at survival stratification (p < 0.0001 for LOH vs p = 0.02 for FISH), although increasing the stringency of FISH interpretation criteria improved concordance and prognostic power. Oligodendrogliomas that were 1p/19q-codeleted by FISH but also had 10q LOH were negative for 1p/19q codeletion by PCR analysis in more than 70% of cases, with very poor survival in the grade III subset. Thus, although PCR-based LOH is a better stratifier of 1p/19q status, FISH still has clinical and prognostic utility, especially if 10q data can be incorporated. FAU - Horbinski, Craig AU - Horbinski C AD - Department of Pathology, University of Kentucky, Lexington, Kentucky, USA. craig.horbinski@uky.edu FAU - Nikiforova, Marina N AU - Nikiforova MN FAU - Hobbs, Jonathan AU - Hobbs J FAU - Bortoluzzi, Stephanie AU - Bortoluzzi S FAU - Cieply, Kathleen AU - Cieply K FAU - Dacic, Sanja AU - Dacic S FAU - Hamilton, Ronald L AU - Hamilton RL LA - eng GR - K08 CA155764/CA/NCI NIH HHS/United States GR - K08 CA155764-02/CA/NCI NIH HHS/United States GR - 1K08CA155764-01A1/CA/NCI NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - England TA - J Neuropathol Exp Neurol JT - Journal of neuropathology and experimental neurology JID - 2985192R SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Chromosomes, Human, Pair 1/*genetics MH - Chromosomes, Human, Pair 10/*genetics MH - Chromosomes, Human, Pair 19/*genetics MH - Cohort Studies MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence/methods MH - Loss of Heterozygosity/*genetics MH - Male MH - Microsatellite Repeats/*genetics MH - Middle Aged MH - Oligodendroglioma/*genetics/pathology MH - Polymerase Chain Reaction/methods MH - Prospective Studies PMC - PMC3246063 MID - NIHMS343364 EDAT- 2011/12/14 06:00 MHDA- 2012/02/14 06:00 PMCR- 2013/01/01 CRDT- 2011/12/14 06:00 PHST- 2011/12/14 06:00 [entrez] PHST- 2011/12/14 06:00 [pubmed] PHST- 2012/02/14 06:00 [medline] PHST- 2013/01/01 00:00 [pmc-release] AID - 10.1097/NEN.0b013e318240fa65 [doi] PST - ppublish SO - J Neuropathol Exp Neurol. 2012 Jan;71(1):73-82. doi: 10.1097/NEN.0b013e318240fa65.