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@ARTICLE{Koelsche:131057,
author = {C. Koelsche$^*$ and D. Schrimpf$^*$ and L. Tharun and E.
Roth and D. Sturm$^*$ and D. Jones$^*$ and E.-K. Renker and
M. Sill$^*$ and A. Baude$^*$ and F. Sahm$^*$ and D.
Capper$^*$ and M. Bewerunge-Hudler$^*$ and W. Hartmann and
A. E. Kulozik and I. Petersen and U. Flucke and H. W. B.
Schreuder and R. Büttner and M.-A. Weber and P. Schirmacher
and C. Plass$^*$ and S. Pfister$^*$ and A. von Deimling$^*$
and G. Mechtersheimer},
title = {{H}istone 3.3 hotspot mutations in conventional
osteosarcomas: a comprehensive clinical and molecular
characterization of six {H}3{F}3{A} mutated cases.},
journal = {Clinical Sarcoma Research},
volume = {7},
number = {1},
issn = {2045-3329},
address = {London},
publisher = {BioMed Central},
reportid = {DKFZ-2017-06124},
pages = {9},
year = {2017},
abstract = {Histone 3.3 (H3.3) hotspot mutations in bone tumors occur
in the vast majority of giant cell tumors of bone (GCTBs;
$96\%),$ chondroblastomas $(95\%)$ and in a few cases of
osteosarcomas. However, clinical presentation,
histopathological features, and additional molecular
characteristics of H3.3 mutant osteosarcomas are largely
unknown.In this multicentre, retrospective study, a total of
106 conventional high-grade osteosarcomas, across all age
groups were re-examined for hotspot mutations in the H3.3
coding genes H3F3A and H3F3B. H3.3 mutant osteosarcomas were
re-evaluated in a multidisciplinary manner and analyzed for
genome-wide DNA-methylation patterns and DNA copy number
aberrations alongside H3.3 wild-type osteosarcomas and H3F3A
G34W/L mutant GCTBs.Six osteosarcomas (6/106) carried H3F3A
hotspot mutations. No mutations were found in H3F3B. All
patients with H3F3A mutant osteosarcoma were older than
30 years with a median age of 65 years. Copy number
aberrations that are commonly encountered in high-grade
osteosarcomas also occurred in H3F3A mutant osteosarcomas.
Unlike a single osteosarcoma with a H3F3A K27M mutation, the
DNA methylation profiles of H3F3A G34W/R mutant
osteosarcomas were clearly different from H3.3 wild-type
osteosarcomas, but more closely related to GCTBs. The most
differentially methylated promoters between H3F3A G34W/R
mutant and H3.3 wild-type osteosarcomas were in KLLN/PTEN
(p < 0.00005) and HIST1H2BB (p < 0.0005).H3.3 mutations
in osteosarcomas may occur in H3F3A at mutational hotspots.
They are overall rare, but become more frequent in
osteosarcoma patients older than 30 years. Osteosarcomas
carrying H3F3A G34W/R mutations are associated with
epigenetic dysregulation of KLLN/PTEN and HIST1H2BB.},
cin = {G380 / L101 / B062 / C060 / C010 / W110},
ddc = {610},
cid = {I:(DE-He78)G380-20160331 / I:(DE-He78)L101-20160331 /
I:(DE-He78)B062-20160331 / I:(DE-He78)C060-20160331 /
I:(DE-He78)C010-20160331 / I:(DE-He78)W110-20160331},
pnm = {317 - Translational cancer research (POF3-317)},
pid = {G:(DE-HGF)POF3-317},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28484590},
pmc = {pmc:PMC5418758},
doi = {10.1186/s13569-017-0075-5},
url = {https://inrepo02.dkfz.de/record/131057},
}