Evidence map›Paper›PMID 31152023›Full record

ArticleBMJ open2019

Method to measure the mismatch between target and achieved received dose intensity of chemotherapy in cancer trials: a retrospective analysis of the MRC BO06 trial in osteosarcoma.

Carlo Lancia, Jakob Anninga, Cristian Spitoni, Matthew R Sydes, Jeremy Whelan, Pancras C W Hogendoorn, Hans Gelderblom, Marta Fiocco

Abstract read
In one paragraph

Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
–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

5 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  3. Article
  4. Review
  5. Article
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

8 authors.

Carlo LanciaMathematical Institute, Universiteit Leiden, Leiden, The Netherlands.ORCID 0000-0002-1239-0662
Jakob AnningaDepartment Solid Tumors, Princess Maxima Center for Pediatric Oncology, Utrecht, The Netherlands.
Cristian SpitoniMathematical Institute, Universiteit Utrecht, Utrecht, The Netherlands.
Matthew R SydesMRC London Hub for Trial Methodology Research, University College London, London, UK.ORCID 0000-0002-9323-1371
Jeremy WhelanUniversity College London Hospitals NHS Foundation Trust, London, UK.
Pancras C W HogendoornPathology, Leiden University Medical Center, Leiden, the Netherlands.
Hans GelderblomClinical Oncology, Leiden University Medical Center, Leiden, the Netherlands.
Marta FioccoBiomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands.

Funding

Medical Research Council MC_UU_12023/21Medical Research Council MC_UU_12023/28
6 · The paper itself

Abstract

objectivesIn cancer studies, the target received dose intensity (tRDI) for any regimen, the intended dose and time for the regimen, is commonly taken as a proxy for achieved RDI (aRDI), the actual individual dose and time for the regimen. Evaluating tRDI/aRDI mismatches is crucial to assess study results whenever patients are stratified on allocated regimen. The manuscript develops a novel methodology to highlight and evaluate tRDI/aRDI mismatches.

designRetrospective analysis of a randomised controlled trial, MRC BO06 (EORTC 80931).

settingPopulation-based study but proposed methodology can be applied to other trial designs.

participantsA total of 497 patients with resectable high-grade osteosarcoma, of which 19 were excluded because chemotherapy was not started or the estimated dose was abnormally high (>1.25 × prescribed dose).

interventionsTwo regimens with the same anticipated cumulative dose (doxorubicin 6×75 mg/m

resultsFor nearly half of the patients, there is a mismatch between tRDI and aRDI; for 21%, aRDI was closer to the tRDI of the other regimen.

conclusionsFor MRC BO06, tRDI did not predict well aRDI. The manuscript offers an original procedure to highlight the presence of and quantify tRDI/aRDI mismatches. Caution is required to interpret the effect of chemotherapy-regimen intensification on survival outcome at an individual level where such a mismatch is present.The study relevance lies in the use of individual realisation of the intended treatment, which depends on individual delays and/or dose reductions reported throughout the treatment. TRIAL REGISTRATION NUMBER: ISRCTN86294690.

Indexed as

Randomized Controlled Trials as TopicAntineoplastic Combined Chemotherapy ProtocolsBone NeoplasmsCluster AnalysisDose-Response Relationship, DrugDrug Administration ScheduleHumansOsteosarcomaRetrospective Studieschemotherapyosteosarcomareceived dose intensity

Identifiers

PMID31152023
PMCPMC6549670

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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.