Evidence map›Paper›PMID 34336686›Full record

ArticleFrontiers in oncology2021

Complementary Sequential Circulating Tumor Cell (CTC) and Cell-Free Tumor DNA (ctDNA) Profiling Reveals Metastatic Heterogeneity and Genomic Changes in Lung Cancer and Breast Cancer.

Say Li Kong, Xingliang Liu, Swee Jin Tan, Joyce A Tai, Ler Yee Phua, Huay Mei Poh, Trifanny Yeo, Yong Wei Chua, Yu Xuan Haw, Wen Huan Ling and 13 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.3field-weighted citation impact, top 22% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 29 citations in OpenAlex.

  1. Article
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  5. The Combined Assessment of CTC andInternational journal of molecular sciences · 2025
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  13. Survival outcomes correlate with the level of cell-free circulating DNA in ST-elevation myocardial infarction.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2024
    Article
  14. Circulating tumor cellsTranslational breast cancer research : a journal focusing on translational research in breast cancer · 2024
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

23 authors at 7 institutions in 2 countries.

Say Li KongCancer Therapeutics and Stratified Oncology, Genome Institute of Singapore, Singapore, Singapore.
Xingliang LiuCancer Therapeutics and Stratified Oncology, Genome Institute of Singapore, Singapore, Singapore.
Swee Jin TanClearbridge mFluidics Pte Ltd, Singapore, Singapore.
Joyce A TaiCancer Therapeutics and Stratified Oncology, Genome Institute of Singapore, Singapore, Singapore.
Ler Yee PhuaCancer Therapeutics and Stratified Oncology, Genome Institute of Singapore, Singapore, Singapore.
Huay Mei PohCancer Therapeutics and Stratified Oncology, Genome Institute of Singapore, Singapore, Singapore.
Trifanny YeoDepartment of Biomedical Engineering, National University of Singapore, Singapore, Singapore.
Yong Wei ChuaDepartment of Anatomical Pathology, Singapore General Hospital, Singapore, Singapore.
Yu Xuan HawCancer Therapeutics and Stratified Oncology, Genome Institute of Singapore, Singapore, Singapore.
Wen Huan LingCancer Therapeutics and Stratified Oncology, Genome Institute of Singapore, Singapore, Singapore.
Raymond Chee Hui NgDivision of Medical Oncology, National Cancer Center, Singapore, Singapore.
Tira J TanDivision of Medical Oncology, National Cancer Center, Singapore, Singapore.
Kiley Wei Jen LohDivision of Medical Oncology, National Cancer Center, Singapore, Singapore.
Daniel Shao-Weng TanDivision of Medical Oncology, National Cancer Center, Singapore, Singapore.
Quan Sing NgDivision of Medical Oncology, National Cancer Center, Singapore, Singapore.
Mei Kim AngDivision of Medical Oncology, National Cancer Center, Singapore, Singapore.
Chee Keong TohDivision of Medical Oncology, National Cancer Center, Singapore, Singapore.
Yi Fang LeeBiolidics Ltd, Singapore, Singapore.
Chwee Teck LimDepartment of Biomedical Engineering, National University of Singapore, Singapore, Singapore.
Tony Kiat Hon LimDepartment of Anatomical Pathology, Singapore General Hospital, Singapore, Singapore.
Axel M HillmerCancer Therapeutics and Stratified Oncology, Genome Institute of Singapore, Singapore, Singapore.
Yoon Sim YapDivision of Medical Oncology, National Cancer Center, Singapore, Singapore.
Wan-Teck LimDivision of Medical Oncology, National Cancer Center, Singapore, Singapore.
Genome Institute of Singapore · SGNational Cancer Centre Singapore · SGDuke-NUS Medical School · SGNational University of Singapore · SGSingapore General Hospital · SGSingapore Bioimaging Consortium · SGUniversity of Cologne · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionCirculating tumor cells (CTCs) and cell-free tumor DNA (ctDNA) are tumor components present in circulation. Due to the limited access to both CTC enrichment platforms and ctDNA sequencing in most laboratories, they are rarely analyzed together.

methodsConcurrent isolation of ctDNA and single CTCs were isolated from lung cancer and breast cancer patients using the combination of size-based and CD45-negative selection method

resultsHigher degrees of genomic heterogeneity were observed in CTCs as compared to ctDNA. Several shared alterations present in CTCs and ctDNA were undetected in the primary tumor, highlighting the intra-tumoral heterogeneity of tumor components that were shed into systemic circulation. Accordingly, CTCs and ctDNA displayed higher degree of concordance with the metastatic tumor than the primary tumor. The alterations detected in circulation correlated with worse survival outcome for both lung and breast cancer patients emphasizing the impact of the metastatic phenotype. Notably, evolving genetic signatures were detected in the CTCs and ctDNA samples during the course of treatment and disease progression.

conclusionsA standardized sample processing and data analysis workflow for concurrent analysis of CTCs and ctDNA successfully dissected the heterogeneity of metastatic tumor in circulation as well as the progressive genomic changes that may potentially guide the selection of appropriate therapy against evolving tumor clonality.

Indexed as

amplicon-sequencingbreast cancercell-free tumor DNAcirculating tumor cellsevolving alterationsgenomic heterogeneitylung cancermetastatic signatures

Identifiers

PMID34336686
PMCPMC8322849
OpenAlexW3177808789

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.