Evidence map›Paper›PMID 28423594›Full record

ArticleOncotarget2017

The hypoxia-activated prodrug evofosfamide in combination with multiple regimens of radiotherapy.

Katarzyna J Nytko, Ivo Grgic, Sabine Bender, Janosch Ott, Matthias Guckenberger, Oliver Riesterer, Martin Pruschy

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 20% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Review
  5. Article
  6. Tomography (Ann Arbor, Mich.) · 2024
    Article
  7. Review
  8. Review
  9. Article
  10. Interfering with Tumor Hypoxia for Radiotherapy Optimization.Journal of experimental & clinical cancer research : CR · 2021
    Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Evofosfamide sensitizes esophageal carcinomas to radiation without increasing normal tissue toxicity.Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology · 2019
    Article
  18. HPV, hypoxia and radiation response in head and neck cancer.The British journal of radiology · 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

7 authors at 1 institution in 1 country.

Katarzyna J NytkoLaboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, Zurich, Switzerland.
Ivo GrgicLaboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, Zurich, Switzerland.
Sabine BenderLaboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, Zurich, Switzerland.
Janosch OttLaboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, Zurich, Switzerland.
Matthias GuckenbergerDepartment of Radiation Oncology, University Hospital Zurich, Zurich, Switzerland.
Oliver RiestererClinical Research Priority Program "Tumor Oxygenation", Zurich, Switzerland.
Martin PruschyLaboratory for Applied Radiobiology, Department of Radiation Oncology, University Hospital Zurich, Zurich, Switzerland.
University Hospital of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The promising treatment combination of ionizing radiation (IR) with a hypoxia-activated prodrug (HAP) is based on biological cooperation. Here we investigated the hypoxia-activated prodrug evofosfamide in combination with different treatment regimens of IR against lung A549- and head&neck UT-SCC-14-derived tumor xenografts. DNA damage-related endpoints and clonogenic cell survival of A549 and UT-SCC-14 carcinoma cells were probed under normoxia and hypoxia.Evofosfamide (TH-302) induced DNA-damage and a dose-dependent antiproliferative response in A549 cells on cellular pretreatment under hypoxia, and supra-additively reduced clonogenic survival in combination with IR. Concomitant treatment of A549-derived tumor xenografts with evofosfamide and fractionated irradiation induced the strongest treatment response in comparison to the corresponding neoadjuvant and adjuvant regimens. Adjuvant evofosfamide was more potent than concomitant and neoadjuvant evofosfamide when combined with a single high dose of IR. Hypoxic UT-SCC-14 cells and tumor xenografts thereof were resistant to evofosfamide alone and in combination with IR, most probably due to reduced P450 oxidoreductase expression, which might act as major predictive determinant of sensitivity to HAPs.In conclusion, evofosfamide with IR is a potent combined treatment modality against hypoxic tumors. However, the efficacy and the therapeutic outcome of this combined treatment modality is, as indicated here in preclinical tumor models, dependent on scheduling parameters and tumor type, which is most probably related to the status of respective HAP-activating oxidoreductases. Further biomarker development is necessary for the launch of successful clinical trials.

Indexed as

AnimalsCell HypoxiaCell Line, TumorChemoradiotherapyHead and Neck NeoplasmsHumansMiceNitroimidazolesPhosphoramide MustardsProdrugsRadiotherapyNitroimidazolesPhosphoramide MustardsProdrugsTH 302evofosfamidehypoxia-activated prodrugionizing radiationP450 oxidoreductaseTH-302

Identifiers

PMID28423594
PMCPMC5410338
OpenAlexW2592091290

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.