Imaging features associated with H3 K27-altered and H3 G34-mutant gliomas : a narrative systematic review

© 2022. The Author(s)..

BACKGROUND: Advances in molecular diagnostics accomplished the discovery of two malignant glioma entities harboring alterations in the H3 histone: diffuse midline glioma, H3 K27-altered and diffuse hemispheric glioma, H3 G34-mutant. Radiogenomics research, which aims to correlate tumor imaging features with genotypes, has not comprehensively examined histone-altered gliomas (HAG). The aim of this research was to synthesize the current published data on imaging features associated with HAG.

METHODS: A systematic search was performed in March 2022 using PubMed and the Cochrane Library, identifying studies on the imaging features associated with H3 K27-altered and/or H3 G34-mutant gliomas.

RESULTS: Forty-seven studies fulfilled the inclusion criteria, the majority on H3 K27-altered gliomas. Just under half (21/47) were case reports or short series, the remainder being diagnostic accuracy studies. Despite heterogeneous methodology, some themes emerged. In particular, enhancement of H3 K27M-altered gliomas is variable and can be less than expected given their highly malignant behavior. Low apparent diffusion coefficient values have been suggested as a biomarker of H3 K27-alteration, but high values do not exclude this genotype. Promising correlations between high relative cerebral blood volume values and H3 K27-alteration require further validation. Limited data on H3 G34-mutant gliomas suggest some morphologic overlap with 1p/19q-codeleted oligodendrogliomas.

CONCLUSIONS: The existing data are limited, especially for H3 G34-mutant gliomas and artificial intelligence techniques. Current evidence indicates that imaging-based predictions of HAG are insufficient to replace histological assessment. In particular, H3 K27-altered gliomas should be considered when occurring in typical midline locations irrespective of enhancement characteristics.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:22

Enthalten in:

Cancer imaging : the official publication of the International Cancer Imaging Society - 22(2022), 1 vom: 17. Nov., Seite 63

Sprache:

Englisch

Beteiligte Personen:

Lasocki, Arian [VerfasserIn]
Abdalla, Gehad [VerfasserIn]
Chow, Geoffrey [VerfasserIn]
Thust, Stefanie C [VerfasserIn]

Links:

Volltext

Themen:

H3 G34-mutant glioma
H3 K27M-altered glioma
Histones
Journal Article
Magnetic resonance imaging
Radiogenomics
Review
Systematic Review

Anmerkungen:

Date Completed 22.11.2022

Date Revised 22.11.2022

published: Electronic

Citation Status MEDLINE

doi:

10.1186/s40644-022-00500-3

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM349104247