Evidence map›Paper›PMID 22829910›Full record

ArticlePloS one2012

Circulating tumor cells in melanoma patients.

Gary A Clawson, Eric Kimchi, Susan D Patrick, Ping Xin, Ramdane Harouaka, Siyang Zheng, Arthur Berg, Todd Schell, Kevin F Staveley-O'Carroll, Rogerio I Neves and 2 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

63 citing papers in PubMed, 91 citations in OpenAlex.

  1. Trial
  2. How Do Cancer Cells Fuse and Why?Advances in experimental medicine and biology · 2026
    Review
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Cell Fusion and Syncytia Formation in Cancer.Results and problems in cell differentiation · 2024
    Review
  11. The Hallmarks of Circulating Hybrid Cells.Results and problems in cell differentiation · 2024
    Review
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Intrinsic signalling factors associated with cancer cell-cell fusion.Cell communication and signaling : CCS · 2023
    Review
  18. Extracellular Events Involved in Cancer Cell-Cell Fusion.International journal of molecular sciences · 2022
    Review
  19. Article
  20. Article

3 more citing papers are in PubMed but not listed here.

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

12 authors at 5 institutions in 1 country.

Gary A ClawsonGittlen Cancer Research Foundation and Department of Pathology, Hershey Medical Center, Pennsylvania State University, Hershey, Pennsylvania, USA. Gac4@psu.edu
Eric Kimchi
Susan D Patrick
Ping Xin
Ramdane Harouaka
Siyang Zheng
Arthur Berg
Todd Schell
Kevin F Staveley-O'Carroll
Rogerio I Neves
Paul J Mosca
Diane Thiboutot
Pennsylvania State University · USPenn State Milton S. Hershey Medical Center · USCancer Research Foundation · USDuke University · USPark University · US

Funding

Aptamer-Based Nanotechnology for Detection of Plasma Melanoma MarkersR21CA137595 · NCI · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI CLAWSON, GARY A · 2009 to 2010
$355k
NCI NIH HHS CA137595NCI NIH HHS R21 CA137595
6 · The paper itself

Abstract

Circulating tumor cells (CTCs) are of recognized importance for diagnosis and prognosis of cancer patients. With melanoma, most studies do not show any clear relationship between CTC levels and stage of disease. Here, CTCs were enriched (∼400X) from blood of melanoma patients using a simple centrifugation device (OncoQuick), and 4 melanocyte target RNAs (TYR, MLANA, MITF, and MIF) were quantified using QPCR. Approximately one-third of melanoma patients had elevated MIF and MLANA transcripts (p<0.0001 and p<0.001, respectively) compared with healthy controls. In contrast, healthy controls had uniformly higher levels of TYR and MITF than melanoma patients (p<0.0001). There was a marked shift of leukocytes into the CTC-enriched fractions (a 430% increase in RNA recovery, p<0.001), and no relationship between CTC levels and stage of disease was found. CTCs were captured on microfabricated filters and cultured. Captured melanoma CTCs were large cells, and consisted of 2 subpopulations, based on immunoreactivity. One subpopulation (∼50%) stained for both pan-cytokeratin (KRT) markers and the common leukocyte marker CD-45, whereas the second subpopulation stained for only KRT. Since similar cells are described in many cancers, we also examined blood from colorectal and pancreatic cancer patients. We observed analogous results, with most captured CTCs staining for both CD-45/KRT markers (and for the monocyte differentiation marker CD-14). Our results suggest that immature melanocyte-related cells (expressing TYR and MITF RNA) may circulate in healthy controls, although they are not readily detectable without considerable enrichment. Further, as early-stage melanomas develop, immature melanocyte migration into the blood is somehow curtailed, whereas a significant proportion of patients develop elevated CTC levels (based on MIF and MLANA RNAs). The nature of the captured CTCs is consistent with literature describing leukocyte/macrophage-tumor cell fusion hybrids, and their role in metastatic progression.

Indexed as

AdultBiomarkers, TumorFemaleHumansLeukocyte Common AntigensLipopolysaccharide ReceptorsMaleMelanomaMicroscopy, FluorescenceMiddle AgedNeoplasm StagingNeoplastic Cells, CirculatingBiomarkers, TumorLeukocyte Common AntigensLipopolysaccharide Receptors

Identifiers

PMID22829910
PMCPMC3400630
OpenAlexW2071490378

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.