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@ARTICLE{Ahmad:288068,
author = {O. Ahmad$^*$ and T. Ahmad and S. Pfister$^*$},
title = {{IDH} mutation, glioma immunogenicity, and therapeutic
challenge of primary mismatch repair deficient {IDH}-mutant
astrocytoma {PMMRDIA}: a systematic review.},
journal = {Molecular oncology},
volume = {18},
number = {12},
issn = {1574-7891},
address = {Hoboken, NJ},
publisher = {John Wiley $\&$ Sons, Inc.},
reportid = {DKFZ-2024-00326},
pages = {2822-2841},
year = {2024},
note = {2024 Dec;18(12):2822-2841 / #EA:B062#LA:B062#},
abstract = {In 2021, Suwala et al. described Primary Mismatch Repair
Deficient IDH-mutant Astrocytoma (PMMRDIA) as a distinct
group of gliomas. In unsupervised clustering, PMMRDIA forms
distinct cluster, separate from other IDH-mutant gliomas,
including IDH-mutant gliomas with secondary mismatch repair
(MMR) deficiency. In the published cohort, three patients
received treatment with an immune checkpoint blocker (ICB),
yet none exhibited a response, which aligns with existing
knowledge about the decreased immunogenicity of IDH-mutant
gliomas in comparison to IDH-wildtype. In the case of
PMMRDIA, the inherent resistance to the standard-of-care
temozolomide caused by MMR deficiency is an additional
challenge. It is known that a gain-of-function mutation of
IDH1/2 genes produces the oncometabolite
R-2-hydroxyglutarate (R-2-HG), which increases DNA and
histone methylation contributing to the characteristic
glioma-associated CpG island methylator phenotype (G-CIMP).
While other factors could be involved in remodeling the
tumor microenvironment (TME) of IDH-mutant gliomas, this
systematic review emphasizes the role of R-2-HG and the
subsequent G-CIMP in immune suppression. This highlights a
potential actionable pathway to enhance the response of ICB,
which might be relevant for addressing the unmet therapeutic
challenge of PMMRDIA.},
subtyp = {Review Article},
keywords = {IDH-mutant glioma (Other) / PMMRDIA (Other) /
immunogenicity (Other)},
cin = {B062 / HD01},
ddc = {610},
cid = {I:(DE-He78)B062-20160331 / I:(DE-He78)HD01-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:38339779},
doi = {10.1002/1878-0261.13598},
url = {https://inrepo02.dkfz.de/record/288068},
}