Evidence map›Paper›PMID 34964932›Full record

ArticleEJNMMI research2021

Investigation of atovaquone-induced spatial changes in tumour hypoxia assessed by hypoxia PET/CT in non-small cell lung cancer patients.

Pauline Bourigault, Michael Skwarski, Ruth E Macpherson, Geoff S Higgins, Daniel R McGowan

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in EJNMMI research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02628080 (Pre-operative Window of Opportunity Study of the Effects of Atovaquone on Hypoxia in Non-small Cell Lung Carcinoma), which is not on this map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.1field-weighted citation impact, top 25% 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.

NCT02628080 early_phase1completednot on this map

Pre-operative Window of Opportunity Study of the Effects of Atovaquone on Hypoxia in Non-small Cell Lung Carcinoma

TypeinterventionalSponsorUniversity of OxfordRan2016 to 2018Enrolled46ConditionsCarcinoma, Non-Small-Cell LungArmsAtovaquone
3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 19 citations in OpenAlex.

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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

5 authors at 3 institutions in 1 country.

Pauline BourigaultDepartment of Oncology, University of Oxford, Oxford, OX3 7DQ, UK.
Michael SkwarskiDepartment of Oncology, University of Oxford, Oxford, OX3 7DQ, UK.
Ruth E MacphersonDepartment of Radiology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
Geoff S Higgins *Department of Oncology, University of Oxford, Oxford, OX3 7DQ, UK.
Daniel R McGowan *Department of Oncology, University of Oxford, Oxford, OX3 7DQ, UK. daniel.mcgowan@oncology.ox.ac.uk.ORCID http://orcid.org/0000-0002-6880-5687
University of Oxford · GBGuy's and St Thomas' NHS Foundation Trust · GBOxford University Hospitals NHS Trust · GB

Funding

Cancer Research UK 16466Cancer Research UK 19590Cancer Research UK 28684Cancer Research UK 28736Cancer Research UK C34326/A19590Cancer Research UK C34326/A28684Cancer Research UK C42780/A27066Cancer Research UK C5255/A16466Cancer Research UK C5255/A23755Cancer Research UK C5255/A25069
6 · The paper itself

Abstract

backgroundTumour hypoxia promotes an aggressive tumour phenotype and enhances resistance to anticancer treatments. Following the recent observation that the mitochondrial inhibitor atovaquone increases tumour oxygenation in NSCLC, we sought to assess whether atovaquone affects tumour subregions differently depending on their level of hypoxia.

methodsPatients with resectable NSCLC participated in the ATOM trial (NCT02628080). Cohort 1 (n = 15) received atovaquone treatment, whilst cohort 2 (n = 15) did not. Hypoxia-related metrics, including change in mean tumour-to-blood ratio, tumour hypoxic volume, and fraction of hypoxic voxels, were assessed using hypoxia PET imaging. Tumours were divided into four subregions or distance categories: edge, outer, inner, and centre, using MATLAB.

resultsAtovaquone-induced reduction in tumour hypoxia mostly occurred in the inner and outer tumour subregions, and to a lesser extent in the centre subregion. Atovaquone did not seem to act in the edge subregion, which was the only tumour subregion that was non-hypoxic at baseline. Notably, the most intensely hypoxic tumour voxels, and therefore the most radiobiologically resistant areas, were subject to the most pronounced decrease in hypoxia in the different subregions.

conclusionsThis study provides insights into the action of atovaquone in tumour subregions that help to better understand its role as a novel tumour radiosensitiser.

trial registrationClinicalTrials.gov, NCT0262808. Registered 11th December 2015, https://clinicaltrials.gov/ct2/show/NCT02628080.

Indexed as

AtovaquoneFMISONon-small cell lung cancerPETTumour hypoxia

Identifiers

PMID34964932
PMCPMC8716680
OpenAlexW4200357664

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.