Evidence map›Paper›PMID 26623560›Full record

ArticleOncotarget2015

Potent efficacy of metronomic topotecan and pazopanib combination therapy in preclinical models of primary or late stage metastatic triple-negative breast cancer.

Teresa Di Desidero, Ping Xu, Shan Man, Guido Bocci, Robert S Kerbel

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

33 citing papers in PubMed, 62 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Review
  5. Observational
  6. Metronomic Chemotherapy in Elderly Patients.Current oncology reports · 2024
    Review
  7. Review
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Vessel co-option in cancer.Nature reviews. Clinical oncology · 2019
    Review
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

5 authors at 3 institutions in 2 countries.

Teresa Di DesideroBiologic Sciences Platform, Sunnybrook Research Institute, Toronto, Canada.
Ping XuBiologic Sciences Platform, Sunnybrook Research Institute, Toronto, Canada.
Shan ManBiologic Sciences Platform, Sunnybrook Research Institute, Toronto, Canada.
Guido BocciDivisione di Farmacologia, Dipartimento di Medicina Clinica e Sperimentale, University of Pisa, Pisa, Italy.
Robert S KerbelBiologic Sciences Platform, Sunnybrook Research Institute, Toronto, Canada.
Sunnybrook Research InstituteUniversity of Pisa · ITUniversity of Toronto · CA

Funding

CIHRWorldwide Cancer Research 14-1329
6 · The paper itself

Abstract

Metronomic chemotherapy has shown promising activity in numerous preclinical studies and also some phase II clinical studies involving various tumor types, and is currently undergoing phase III trial evaluation. Triple-negative breast cancer (TNBC) is an aggressive histological subtype with limited treatment options and very poor prognosis following progression after standard chemotherapeutic regimens. Herein, we evaluated the potential therapeutic impact and molecular mechanisms of topotecan administered in a continuous low-dose metronomic (LDM) manner, alone or in concurrent combination with pazopanib, an antiangiogenic tyrosine kinase inhibitor (TKI), in a triple-negative, primary and metastatic breast cancer orthotopic model; potential molecular mechanisms of efficacy were also studied, especially the impact of hypoxic conditions. The combination of metronomic topotecan and pazopanib significantly enhanced antitumor activity compared to monotherapy with either drug and prolonged survival, even in the advanced metastatic survival setting, with a marked decrease in tumor vascularity, proliferative index, and the induction of apoptosis. Significant changes in tumor angiogenesis, cancer cell proliferation, apoptosis, HIF1α levels, HIF-1 target genes and ABCG2 were found both in vitro and in tumor tissue. Notably, the pazopanib and metronomic topotecan combination treatment inhibited expression of HIF1α and ABCG2 genes in cells grown under hypoxic conditions, and this was associated with an increased intracellular concentration of the active form of topotecan. Our results suggest a potential novel therapeutic option for the treatment of metastatic triple-negative breast cancer patients.

Indexed as

Administration, MetronomicAngiogenesis InhibitorsAnimalsAntineoplastic Combined Chemotherapy ProtocolsATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily G, Member 2Blotting, WesternCell Line, TumorFemaleGene ExpressionHumansHypoxia-Inducible Factor 1, alpha SubunitImmunohistochemistryIndazolesKaplan-Meier EstimateMiceABCG2 protein, humanAngiogenesis InhibitorsATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily G, Member 2HIF1A protein, humanHypoxia-Inducible Factor 1, alpha SubunitIndazolesNeoplasm ProteinspazopanibPyrimidinesSulfonamidesTopotecanmetastatic triple negative breast cancermetronomic chemotherapypazopanibtopotecan

Identifiers

PMID26623560
PMCPMC4767441
OpenAlexW2179538534

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.