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@ARTICLE{Salmon:307458,
author = {C. Salmon and R. P. L. Neves and N. H. Stoecklein and S.-T.
Liffers$^*$ and J. Siveke$^*$ and J. D. Kuhlmann$^*$ and P.
Wimberger$^*$ and P. Buderath and R. Kimmig and S.
Kasimir-Bauer},
title = {{P}henotypic and genotypic characterization of single
circulating tumor cells in the follow-up of high-grade
serous ovarian cancer.},
journal = {Molecular oncology},
volume = {nn},
issn = {1574-7891},
address = {Hoboken, NJ},
publisher = {John Wiley $\&$ Sons, Inc.},
reportid = {DKFZ-2025-03057},
pages = {nn},
year = {2025},
note = {epub},
abstract = {Single circulating tumor cell (sCTC) analysis enables the
determination of predominant CTC phenotypes and genotypes.
We previously demonstrated the feasibility of sCTC detection
and genomic characterization in high-grade serous ovarian
cancer (HGSOC) by combining immune-magnetic enrichment and
image-based sorting, followed by whole-genome amplification
(WGA) and next-generation sequencing-based copy number
alteration analysis (CNA). Here we aimed to improve our
workflow by incorporating HGSOC-specific markers, folate
receptor alpha (FRα), and markers to identify epithelial
(cytokeratin) and mesenchymal (vimentin) phenotypes for the
phenotypic as well as genotypic analysis of sCTCs over the
course of treatment in 42 HGSOC patients. We detected a
significant reduction of FRα-positive cells (P = 0.0205)
and an expansion of cells with a high nuclear staining and
no target antigen expression (P = 0.002). Before treatment,
sCTCs showed an enrichment in CNAs of Chromosomes 2, 7, and
12, while CNA dynamics of sCTCs suggested a potential
selection of distinct CNAs specific to the homologous
recombination pathway. sCTCs revealed persistent CNAs in the
CDK4 and emerging ones in the ALK oncogene. Notably, primary
tumors revealed considerable fractions of shared genomic
aberrations.},
keywords = {genotype (Other) / high‐grade serous ovarian cancer
(Other) / phenotype (Other) / single cell sequencing (Other)
/ single circulating tumor cells (Other)},
cin = {ED01 / DD01},
ddc = {610},
cid = {I:(DE-He78)ED01-20160331 / I:(DE-He78)DD01-20160331},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:41437733},
doi = {10.1002/1878-0261.70193},
url = {https://inrepo02.dkfz.de/record/307458},
}