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MRI Imaging Characteristics of Glioblastoma with Concurrent Gain of Chromosomes 19 and 20

Glioblastoma (GBM) is the most common and deadly primary brain tumor in adults. Some of the genetic variations identified thus far, such as IDH mutation and MGMT promotor methylation, have implications for survival and response to therapy. A recent analysis of long-term GBM survivors showed that con...

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Autores principales: Min, Taejin L., Allen, Jason W., Velazquez Vega, Jose E., Neill, Stewart G., Weinberg, Brent D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8293438/
https://www.ncbi.nlm.nih.gov/pubmed/34199376
http://dx.doi.org/10.3390/tomography7020021
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author Min, Taejin L.
Allen, Jason W.
Velazquez Vega, Jose E.
Neill, Stewart G.
Weinberg, Brent D.
author_facet Min, Taejin L.
Allen, Jason W.
Velazquez Vega, Jose E.
Neill, Stewart G.
Weinberg, Brent D.
author_sort Min, Taejin L.
collection PubMed
description Glioblastoma (GBM) is the most common and deadly primary brain tumor in adults. Some of the genetic variations identified thus far, such as IDH mutation and MGMT promotor methylation, have implications for survival and response to therapy. A recent analysis of long-term GBM survivors showed that concurrent gain of chromosomes 19 and 20 (19/20 co-gain) is a positive prognostic factor that is independent of IDH mutation status. In this study, we retrospectively identified 18 patients with 19/20 co-gain and compared their imaging features to a control cohort without 19/20 co-gain. Imaging features such as tumor location, size, pial invasion, and ependymal extension were examined manually. When compared without further genetic subclassification, both groups showed similar imaging features except for rates of pial invasion. When each group was subclassified by MGMT promotor methylation status however, the two groups showed different imaging features in a number of additional ways including tumor location, size, and ependymal extension. Our results indicate that different permutations of various genetic mutations that coexist in GBM may interact in unpredictable ways to affect imaging appearance, and that imaging prognostication may be better approached in the context of the global genomic profile rather than individual genetic alterations.
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spelling pubmed-82934382021-07-22 MRI Imaging Characteristics of Glioblastoma with Concurrent Gain of Chromosomes 19 and 20 Min, Taejin L. Allen, Jason W. Velazquez Vega, Jose E. Neill, Stewart G. Weinberg, Brent D. Tomography Article Glioblastoma (GBM) is the most common and deadly primary brain tumor in adults. Some of the genetic variations identified thus far, such as IDH mutation and MGMT promotor methylation, have implications for survival and response to therapy. A recent analysis of long-term GBM survivors showed that concurrent gain of chromosomes 19 and 20 (19/20 co-gain) is a positive prognostic factor that is independent of IDH mutation status. In this study, we retrospectively identified 18 patients with 19/20 co-gain and compared their imaging features to a control cohort without 19/20 co-gain. Imaging features such as tumor location, size, pial invasion, and ependymal extension were examined manually. When compared without further genetic subclassification, both groups showed similar imaging features except for rates of pial invasion. When each group was subclassified by MGMT promotor methylation status however, the two groups showed different imaging features in a number of additional ways including tumor location, size, and ependymal extension. Our results indicate that different permutations of various genetic mutations that coexist in GBM may interact in unpredictable ways to affect imaging appearance, and that imaging prognostication may be better approached in the context of the global genomic profile rather than individual genetic alterations. MDPI 2021-06-02 /pmc/articles/PMC8293438/ /pubmed/34199376 http://dx.doi.org/10.3390/tomography7020021 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Min, Taejin L.
Allen, Jason W.
Velazquez Vega, Jose E.
Neill, Stewart G.
Weinberg, Brent D.
MRI Imaging Characteristics of Glioblastoma with Concurrent Gain of Chromosomes 19 and 20
title MRI Imaging Characteristics of Glioblastoma with Concurrent Gain of Chromosomes 19 and 20
title_full MRI Imaging Characteristics of Glioblastoma with Concurrent Gain of Chromosomes 19 and 20
title_fullStr MRI Imaging Characteristics of Glioblastoma with Concurrent Gain of Chromosomes 19 and 20
title_full_unstemmed MRI Imaging Characteristics of Glioblastoma with Concurrent Gain of Chromosomes 19 and 20
title_short MRI Imaging Characteristics of Glioblastoma with Concurrent Gain of Chromosomes 19 and 20
title_sort mri imaging characteristics of glioblastoma with concurrent gain of chromosomes 19 and 20
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8293438/
https://www.ncbi.nlm.nih.gov/pubmed/34199376
http://dx.doi.org/10.3390/tomography7020021
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