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@ARTICLE{Dieter:124344,
author = {S. Dieter$^*$ and C. Heining$^*$ and A. Agaimy and D.
Huebschmann$^*$ and D. Bonekamp$^*$ and B. Hutter$^*$ and K.
R. Ehrenberg$^*$ and M. Fröhlich$^*$ and M. Schlesner$^*$
and C. Scholl$^*$ and H.-P. Schlemmer$^*$ and S. Wolf$^*$
and A. Mavratzas and C. S. Jung and S. Gröschel$^*$ and C.
von Kalle$^*$ and R. Eils$^*$ and B. Brors$^*$ and R. Penzel
and M. Kriegsmann and D. E. Reuss and P. Schirmacher$^*$ and
A. Stenzinger and P. A. Federspil and W. Weichert$^*$ and H.
Glimm$^*$ and S. Fröhling$^*$},
title = {{M}utant {KIT} as imatinib-sensitive target in metastatic
sinonasal carcinoma.},
journal = {Annals of oncology},
volume = {28},
number = {1},
issn = {1569-8041},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {DKFZ-2017-01223},
pages = {142-148},
year = {2017},
abstract = {Sinonasal carcinomas (SNCs) comprise various rare tumor
types that are characterized by marked histologic diversity
and largely unknown molecular profiles, yet share an overall
poor prognosis owing to an aggressive clinical course and
frequent late-stage diagnosis. The lack of effective
systemic therapies for locally advanced or metastatic SNC
poses a major challenge to therapeutic decision making for
individual patients. We here aimed to identify actionable
genetic alterations in a patient with metastatic SNC whose
tumor, despite all diagnostic efforts, could not be assigned
to any known SNC category and was refractory to multimodal
therapy.We used whole-exome and transcriptome sequencing to
identify a KIT exon 11 mutation $(c.1733_1735del,$
p.D579del) as potentially druggable target in this patient
and carried out cancer hotspot panel sequencing to detect
secondary resistance-conferring mutations in KIT.
Furthermore, as a step towards clinical exploitation of the
recently described signatures of mutational processes in
cancer genomes, we established and applied a novel
bioinformatics algorithm that enables supervised analysis of
the mutational catalogs of individual tumors.Molecularly
guided treatment with imatinib in analogy to the management
of gastrointestinal stromal tumor (GIST) resulted in a
dramatic and durable response with remission of nearly all
tumor manifestations, indicating a dominant driver function
of mutant KIT in this tumor. KIT dependency was further
validated by a secondary KIT exon 17 mutation
$(c.2459_2462delATTCinsG,$ $p.D820_S821delinsG)$ that was
detected upon tumor progression after 10 months of imatinib
treatment and provided a rationale for salvage therapy with
regorafenib, which has activity against KIT exon 11/17
mutant GIST.These observations highlight the potential of
unbiased genomic profiling for uncovering the
vulnerabilities of individual malignancies, particularly in
rare and unclassifiable tumors, and underscore that KIT exon
11 mutations represent tractable therapeutic targets across
different histologies.},
keywords = {Antineoplastic Agents (NLM Chemicals) / Biomarkers, Tumor
(NLM Chemicals) / Imatinib Mesylate (NLM Chemicals) /
Proto-Oncogene Proteins c-kit (NLM Chemicals)},
cin = {G100 / B080 / E010 / G200 / W190 / G102 / G240 / L101 /
L701},
ddc = {610},
cid = {I:(DE-He78)G100-20160331 / I:(DE-He78)B080-20160331 /
I:(DE-He78)E010-20160331 / I:(DE-He78)G200-20160331 /
I:(DE-He78)W190-20160331 / I:(DE-He78)G102-20160331 /
I:(DE-He78)G240-20160331 / I:(DE-He78)L101-20160331 /
I:(DE-He78)L701-20160331},
pnm = {317 - Translational cancer research (POF3-317)},
pid = {G:(DE-HGF)POF3-317},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:27687311},
doi = {10.1093/annonc/mdw446},
url = {https://inrepo02.dkfz.de/record/124344},
}