Evidence map›Paper›PMID 32819389›Full record

ArticleRadiation oncology (London, England)2020

Impact of delays in radiotherapy of head and neck cancer on outcome.

Barbara Žumer, Maja Pohar Perme, Simona Jereb, Primož Strojan

Abstract read
In one paragraph

Article in Radiation oncology (London, England), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
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

16 citing papers in PubMed.

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  13. Fewer head and neck cancer diagnoses and faster treatment initiation during COVID-19 in 2020: A nationwide population-based analysis.Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology · 2022
    Article
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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

4 authors.

Barbara ŽumerDepartment of Radiation Oncology, Institute of Oncology Ljubljana, Zaloška 2, SI-1000, Ljubljana, Slovenia.
Maja Pohar PermeInstitute of Biostatistics and Medical Informatics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
Simona JerebDepartment of Radiology, Institute of Oncology Ljubljana, Ljubljana, Slovenia.
Primož StrojanDepartment of Radiation Oncology, Institute of Oncology Ljubljana, Zaloška 2, SI-1000, Ljubljana, Slovenia. pstrojan@onko-i.si.ORCID http://orcid.org/0000-0002-0445-112X

Funding

Javna Agencija za Raziskovalno Dejavnost RS P3-0307
6 · The paper itself

Abstract

backgroundIn head and neck cancer (HNC), the relationship between a delay in starting radiotherapy (RT) and the outcome is unclear. The aim of the present study was to determine the impact of the amount of time before treatment intervention (TTI) and the growth kinetics of individual tumors on treatment outcomes and survival.

methodsTwo hundred sixty-two HNC patients with 273 primary tumors, treated with definitive (chemo) RT, were retrospectively analyzed. The TTI was defined as the time interval between the date of histopathologic diagnosis and the first day of the RT course. Volumetric data on 57 tumors were obtained from diagnostic and RT planning computer tomography (CT) scans in order to calculate the tumor growth kinetic parameters.

resultsNo significant association between locoregional control or cause-specific hazards and TTI was found. The log hazard for locoregional recurrence linearly increased during the first 40 days of waiting for RT, although this was not significant. The median tumor volume relative increase rate and tumor volume doubling time was 3.2%/day and 19 days, respectively, and neither had any impact on locoregional control or cause-specific hazards.

conclusionThe association between a delay in starting RT and the outcome is complex and does not harm all patients waiting for RT. Further research into imaging-derived kinetic data on individual tumors is warranted in order to identify patients at an increased risk of adverse outcomes due to a delay in starting RT.

Indexed as

AdultAgedAged, 80 and overFemaleHead and Neck NeoplasmsHumansMaleMiddle AgedNeoplasm Recurrence, LocalRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedRetrospective StudiesSquamous Cell Carcinoma of Head and NeckSurvival RateTime-to-TreatmentHead and neck cancerOutcomeRadiotherapyTreatment delayWaiting time

Identifiers

PMID32819389
PMCPMC7441656

What OpenQuestion holds

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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.