Evidence map›Paper›PMID 22562089›Full record

Trial reportEuropean radiology2012

Metabolic response at repeat PET/CT predicts pathological response to neoadjuvant chemotherapy in oesophageal cancer.

R S Gillies, M R Middleton, C Blesing, K Patel, N Warner, R E K Marshall, N D Maynard, K M Bradley, F V Gleeson

Abstract readClinical Trial
PubMed Publisher
In one paragraph

Trial report in European radiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

  1. Trial
  2. Article
  3. Review
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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

9 authors.

R S GilliesDepartment of Oncology, Oxford Cancer & Haematology Centre, Oxford, UK. rgillies@doctors.org.uk
M R Middleton
C Blesing
K Patel
N Warner
R E K Marshall
N D Maynard
K M Bradley
F V Gleeson

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesReports have suggested that a reduction in tumour 18F-fluorodeoxyglucose (FDG) uptake on positron emission tomography (PET) examination during or after neoadjuvant chemotherapy may predict pathological response in oesophageal cancer. Our aim was to determine whether metabolic response predicts pathological response to a standardised neoadjuvant chemotherapy regimen within a prospective clinical trial.

methodsConsecutive patients staged with potentially curable oesophageal cancer who underwent treatment within a non-randomised clinical trial were included. A standardised chemotherapy regimen (two cycles of oxaliplatin and 5-fluorouracil) was used. PET/CT was performed before chemotherapy and repeated 24-28 days after the start of cycle 2.

resultsForty-eight subjects were included: mean age 65 years; 37 male. Using the median percentage reduction in SUV(max) (42%) to define metabolic response, pathological response was seen in 71% of metabolic responders (17/24) compared with 33% of non-responders (8/24; P = 0.009, sensitivity 68%, specificity 70%). Pathological response was seen in 81% of subjects with a complete metabolic response (13/16) compared with 38% of those with a less than complete response (12/32; P = 0.0042, sensitivity 52%, specificity 87%). There was no significant histology-based effect.

conclusionsThere was a significant association between metabolic response and pathological response; however, accuracy in predicting pathological response was relatively low.

Indexed as

Positron-Emission TomographyTomography, X-Ray ComputedAgedAntineoplastic AgentsChemotherapy, AdjuvantEsophageal NeoplasmsFemaleFluorodeoxyglucose F18HumansMaleMetabolic Clearance RateMultimodal ImagingNeoadjuvant TherapyRadiopharmaceuticalsTissue DistributionTreatment FailureAntineoplastic AgentsFluorodeoxyglucose F18Radiopharmaceuticals

Identifiers

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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.