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@ARTICLE{Sievers:170133,
author = {P. Sievers$^*$ and S. Henneken$^*$ and C. Blume$^*$ and M.
Sill$^*$ and D. Schrimpf$^*$ and D. Stichel$^*$ and K.
Okonechnikov$^*$ and D. E. Reuss$^*$ and J. Benzel$^*$ and
K. K. Maaß$^*$ and M. Kool$^*$ and D. Sturm$^*$ and T.
Zheng$^*$ and D. R. Ghasemi$^*$ and P. Kohlhof-Meinecke and
O. Cruz and M. Suñol and C. Lavarino and V. Ruf and H. B.
Boldt and M. Pagès and C. Pouget and L. Schweizer$^*$ and
M. E. G. Kranendonk and N. Akhtar and S. Bunkowski and C.
Stadelmann and U. Schüller and W. C. Mueller and H. Dohmen
and T. Acker and P. Harter$^*$ and C. Mawrin and R.
Beschorner and S. Brandner and M. Snuderl and Z. Abdullaev
and K. Aldape and M. R. Gilbert and T. S. Armstrong and D.
W. Ellison and D. Capper$^*$ and K. Ichimura and G.
Reifenberger$^*$ and R. G. Grundy and N. Jabado and L.
Krskova and M. Zapotocky and A. Vicha and P. Varlet and P.
Wesseling and S. Rutkowski and A. Korshunov$^*$ and W.
Wick$^*$ and S. M. Pfister$^*$ and D. T. W. Jones$^*$ and A.
von Deimling$^*$ and K. W. Pajtler$^*$ and F. Sahm$^*$},
title = {{R}ecurrent fusions in {PLAGL}1 define a distinct subset of
pediatric-type supratentorial neuroepithelial tumors.},
journal = {Acta neuropathologica},
volume = {142},
number = {5},
issn = {1432-0533},
address = {Heidelberg},
publisher = {Springer},
reportid = {DKFZ-2021-01763},
pages = {827-839},
year = {2021},
note = {#EA:B300#LA:B300# / 2021 Nov;142(5):827-839},
abstract = {Ependymomas encompass a heterogeneous group of central
nervous system (CNS) neoplasms that occur along the entire
neuroaxis. In recent years, extensive (epi-)genomic
profiling efforts have identified several molecular groups
of ependymoma that are characterized by distinct molecular
alterations and/or patterns. Based on unsupervised
visualization of a large cohort of genome-wide DNA
methylation data, we identified a highly distinct group of
pediatric-type tumors (n = 40) forming a cluster separate
from all established CNS tumor types, of which a high
proportion were histopathologically diagnosed as ependymoma.
RNA sequencing revealed recurrent fusions involving the
pleomorphic adenoma gene-like 1 (PLAGL1) gene in 19 of 20 of
the samples analyzed, with the most common fusion being
EWSR1:PLAGL1 (n = 13). Five tumors showed a PLAGL1:FOXO1
fusion and one a PLAGL1:EP300 fusion. High transcript levels
of PLAGL1 were noted in these tumors, with concurrent
overexpression of the imprinted genes H19 and IGF2, which
are regulated by PLAGL1. Histopathological review of cases
with sufficient material (n = 16) demonstrated a broad
morphological spectrum of tumors with predominant
ependymoma-like features. Immunohistochemically, tumors were
GFAP positive and OLIG2- and SOX10 negative. In 3/16 of the
cases, a dot-like positivity for EMA was detected. All
tumors in our series were located in the supratentorial
compartment. Median age of the patients at the time of
diagnosis was 6.2 years. Median progression-free survival
was 35 months (for 11 patients with data available). In
summary, our findings suggest the existence of a novel group
of supratentorial neuroepithelial tumors that are
characterized by recurrent PLAGL1 fusions and enriched for
pediatric patients.},
keywords = {EP300 (Other) / EWSR1 (Other) / FOXO1 (Other) / Gene fusion
(Other) / Neuroepithelial tumor (Other) / PLAGL1 (Other) /
Supratentorial (Other)},
cin = {B300 / HD01 / B062 / B240 / B360 / BE01 / FM01 / ED01 /
B320},
ddc = {610},
cid = {I:(DE-He78)B300-20160331 / I:(DE-He78)HD01-20160331 /
I:(DE-He78)B062-20160331 / I:(DE-He78)B240-20160331 /
I:(DE-He78)B360-20160331 / I:(DE-He78)BE01-20160331 /
I:(DE-He78)FM01-20160331 / I:(DE-He78)ED01-20160331 /
I:(DE-He78)B320-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34355256},
doi = {10.1007/s00401-021-02356-6},
url = {https://inrepo02.dkfz.de/record/170133},
}