Evidence map›Paper›PMID 21868765›Full record

ArticleClinical cancer research : an official journal of the American Association for Cancer Research2011

Discriminant analysis of ¹⁸F-fluorothymidine kinetic parameters to predict survival in patients with recurrent high-grade glioma.

Mirwais Wardak, Christiaan Schiepers, Magnus Dahlbom, Timothy Cloughesy, Wei Chen, Nagichettiar Satyamurthy, Johannes Czernin, Michael E Phelps, Sung-Cheng Huang

Abstract read
In one paragraph

Article in Clinical cancer research : an official journal of the American Association for Cancer Research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

21 citing papers in PubMed, 57 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Article
  4. The relationship between gadolinium enhancement and [18 F]fluorothymidine uptake in brain lesions with the use of hybrid PET/MRI.Cancer imaging : the official publication of the International Cancer Imaging Society · 2024
    Article
  5. Review
  6. Molecular psychiatry · 2020
    Article
  7. Article
  8. Article
  9. Annals of nuclear medicine · 2017
    Review
  10. Observational
  11. Review
  12. Review
  13. Lessons from anti-vascular endothelial growth factor and anti-vascular endothelial growth factor receptor trials in patients with glioblastoma.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2015
    Article
  14. Article
  15. Article
  16. ¹⁸F-FLT    and ¹⁸F-FDOPA PET kinetics in recurrent brain tumors.European journal of nuclear medicine and molecular imaging · 2014
    Article
  17. FLT PET-CT in evaluation of treatment response.Indian journal of nuclear medicine : IJNM : the official journal of the Society of Nuclear Medicine, India · 2014
    Review
  18. Incorporating prognostic imaging biomarkers into clinical practice.Cancer imaging : the official publication of the International Cancer Imaging Society · 2013
    Review
  19. Article
  20. Brain tumors.Seminars in nuclear medicine · 2012
    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

9 authors at 1 institution in 1 country.

Mirwais WardakDepartment of Molecular and Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.
Christiaan Schiepers
Magnus Dahlbom
Timothy Cloughesy
Wei Chen
Nagichettiar Satyamurthy
Johannes Czernin
Michael E Phelps
Sung-Cheng Huang
University of California, Los Angeles · US

Funding

Transductionally Redirected /Transcriptionally RestricteP50CA086306 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI HERSCHMAN, HARVEY R. · 2000 to 2014
$29.0M
NCI NIH HHS P50 CA086306
6 · The paper itself

Abstract

purposeThe primary objective of this study was to investigate whether changes in 3'-deoxy-3'-[¹⁸F]fluorothymidine (¹⁸F-FLT) kinetic parameters, taken early after the start of therapy, could predict overall survival (OS) and progression-free survival (PFS) in patients with recurrent malignant glioma undergoing treatment with bevacizumab and irinotecan. EXPERIMENTAL

designHigh-grade recurrent brain tumors were investigated in 18 patients (8 male and 10 female), ages 26 to 76 years. Each had 3 dynamic positron emission tomography (PET) studies as follows: at baseline and after 2 and 6 weeks from the start of treatment, ¹⁸F-FLT (2.0 MBq/kg) was injected intravenously, and dynamic PET images were acquired for 1 hour. Factor analysis generated factor images from which blood and tumor uptake curves were derived. A three-compartment, two-tissue model was applied to estimate tumor ¹⁸F-FLT kinetic rate constants using a metabolite- and partial volume-corrected input function. Different combinations of predictor variables were exhaustively searched in a discriminant function to accurately classify patients into their known OS and PFS groups. A leave-one-out cross-validation technique was used to assess the generalizability of the model predictions.

resultsIn this study population, changes in single parameters such as standardized uptake value or influx rate constant did not accurately classify patients into their respective OS groups (<1 and ≥ 1 year; hit ratios ≤ 78%). However, changes in a set of ¹⁸F-FLT kinetic parameters could perfectly separate these two groups of patients (hit ratio = 100%) and were also able to correctly classify patients into their respective PFS groups (<100 and ≥ 100 days; hit ratio = 88%).

conclusionsDiscriminant analysis using changes in ¹⁸F-FLT kinetic parameters early during treatment seems to be a powerful method for evaluating the efficacy of therapeutic regimens.

Indexed as

DideoxynucleosidesAdultAgedAntibodies, Monoclonal, HumanizedAntineoplastic Combined Chemotherapy ProtocolsBevacizumabBrain NeoplasmsCamptothecinDiscriminant AnalysisDisease-Free SurvivalFemaleGliomaHumansIrinotecanMaleMiddle AgedalovudineAntibodies, Monoclonal, HumanizedBevacizumabCamptothecinDideoxynucleosidesIrinotecan

Identifiers

PMID21868765
PMCPMC3833447
OpenAlexW2134491253

What OpenQuestion holds

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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.