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@ARTICLE{Fischer:303504,
author = {T. Fischer$^*$ and K. Maass$^*$ and M. Schoof and P.
Puranachot and P. Sievers$^*$ and S. Montigel$^*$ and T.
Fluhr and A. El Damaty and A. Seitz and S. Harrabi and K.
Schramm$^*$ and D. Sturm$^*$ and D. Jones$^*$ and S.
Pfister$^*$ and O. Witt$^*$ and C. M. van Tilburg$^*$ and T.
Milde$^*$ and U. Schüller and K. Pajtler$^*$},
title = {{C}erebrospinal fluid liquid biopsy guides differential
diagnosis of relapsed medulloblastoma versus secondary
glioma: {A} case report of a pediatric patient enrolled on a
{PDGFRA} inhibitor trial.},
journal = {Neuro-oncology advances},
volume = {7},
number = {1},
issn = {2632-2498},
address = {Oxford},
publisher = {Oxford University Press},
reportid = {DKFZ-2025-01695},
pages = {vdaf110},
year = {2025},
note = {#EA:B062#LA:B062#},
abstract = {Liquid biopsies have the potential to substantially
transform clinical oncology, but their technical
applicability and clinical utility in pediatric
neuro-oncology remain to be explored. Here, we present a
case of a medulloblastoma patient in which a cerebrospinal
fluid liquid biopsy provided an accurate molecular tumor
classification of a secondary glioma during follow-up. Using
Nanopore sequencing and low-coverage whole genome sequencing
pipelines optimized for cell-free DNA, the liquid biopsy
revealed a PDGFRA amplification and DNA methylation-based
tumor classification consistent with a secondary glioma.
These findings guided the tumor board's differential
diagnosis of medulloblastoma relapse versus secondary
glioma. Notably, the rapid turnaround time of the Nanopore
sequencing results enabled timely preparation for enrollment
in a PDGFRA inhibitor trial while awaiting confirmatory
results from the tissue biopsy. This case exemplifies the
advancing frontier of liquid biopsies and provides the
rationale for prospective implementation in larger case
series and clinical trials in pediatric neuro-oncology.},
keywords = {cell-free DNA (Other) / cerebrospinal fluid liquid biopsy
(Other) / molecular biomarkers (Other) / pediatric
neuro-oncology (Other) / secondary glioma (Other)},
cin = {B062 / HD01 / B300 / B360 / B310},
ddc = {610},
cid = {I:(DE-He78)B062-20160331 / I:(DE-He78)HD01-20160331 /
I:(DE-He78)B300-20160331 / I:(DE-He78)B360-20160331 /
I:(DE-He78)B310-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40800122},
pmc = {pmc:PMC12342540},
doi = {10.1093/noajnl/vdaf110},
url = {https://inrepo02.dkfz.de/record/303504},
}