Evidence map›Paper›PMID 21297126›Full record

ArticleNeuro-oncology2011

MRI as a central component of clinical trials analysis in brainstem glioma: a report from the Pediatric Brain Tumor Consortium (PBTC).

Tina Young Poussaint, Mehmet Kocak, Sridhar Vajapeyam, Roger I Packer, Richard L Robertson, Russell Geyer, Daphne Haas-Kogan, Ian F Pollack, Gilbert Vezina, Robert Zimmerman and 4 more

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in Neuro-oncology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03620032 (Phase 2 Randomized Study of RT and Reirradiation at Relapse vs Multiple Elective RT Courses With Same Concomitant CT for Newly Diagnosed), which is not on this map. Cited by 63 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 8% 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.

NCT03620032 phase2unknown statusnot on this mapstarted 2015, after this paper: background citation

Phase 2 Randomized Study of RT and Reirradiation at Relapse vs Multiple Elective RT Courses With Same Concomitant CT for Newly Diagnosed

TypeinterventionalSponsorFondazione IRCCS Istituto Nazionale dei Tumori, MilanoRan2015 to 2024Enrolled54ConditionsDiffuse Intrinsic Pontine GliomaArmsNimotuzumab, Vinorelbine, Radiotherapy
3 · Its place in the literature

Who cites it

63 citing papers in PubMed, 1 synthesis or guideline pooled it, 103 citations in OpenAlex.

  1. Interval brain imaging for adults with cerebral glioma.The Cochrane database of systematic reviews · 2019
    Pooled it
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  19. Pediatric Diffuse Midline Gliomas: An Unfinished Puzzle.Diagnostics (Basel, Switzerland) · 2022
    Review
  20. Review

3 more citing papers are in PubMed but not listed here.

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

14 authors at 6 institutions in 1 country.

Tina Young PoussaintDepartment of Radiology, Children's Hospital Boston, Boston, MA 02115, USA. tina.poussaint@childrens.harvard.edu
Mehmet Kocak
Sridhar Vajapeyam
Roger I Packer
Richard L Robertson
Russell Geyer
Daphne Haas-Kogan
Ian F Pollack
Gilbert Vezina
Robert Zimmerman
Soonmee Cha
Zoltan Patay
James M Boyett
Larry E Kun
University of California, San Francisco · USChildren's Hospital of Philadelphia · USChildren's Hospital of Pittsburgh · USBoston Children's Hospital · USSeattle Children's Hospital · USSt. Jude Children's Research Hospital · US

Funding

The Pediatric Brain Tumor Consortium (PBTC)U01CA081457 · NCI · ST. JUDE CHILDREN'S RESEARCH HOSPITAL · PI BOYETT, JAMES MILFORD · 1999 to 2013
$29.2M
NCI NIH HHS U01 CA81457
6 · The paper itself

Abstract

We report MRI findings from 2 pediatric clinical trials of diffuse intrinsic brainstem glioma (BSG) incorporating concurrent radiation therapy (RT) with molecularly targeted agents (gefitinib and tipifarnib). We determined associations of MRI variables with progression-free survival and overall survival and investigated effects of treatment on these variables. MRI (including diffusion and perfusion) was done before treatment, every 8 weeks (first year), every 12 weeks (thereafter), and at the end of treatment or disease progression. Reduced tumor volume (P < .0001) and tumor diffusion values (P <.0001) were apparent on the first post-RT/drug studies. Decreases in tumor volume correlated with pre-RT volume (P < .0001) and pre-RT diffusion values (P < .0001); larger decreases were noted for tumors with higher volumes and diffusion values. Patients with larger pre-RT tumors had longer progression-free survival (P < .0001). Patients with ≥ 25% decrease in tumor volume and diffusion values after RT had longer progression-free survival (P = .028) and overall survival (P = .0009). Enhancement at baseline and over time was significantly associated with shorter survival. Tumor diffusion values with baseline enhancement were significantly lower than those without (P = .0002). RT of BSG is associated with decreased tumor volume and intralesional diffusion values; patients with ≥ 25% decrease in values post-RT had relatively longer survival intervals, apparently providing an early imaging-based surrogate for relative outcomes. Patients with larger tumors and greater decreases in tumor volume and diffusion values had longer survival intervals. Tumor enhancement was associated with shorter survival, lower tumor diffusion values (increased cellularity), and a smaller drop in diffusion values after RT (P = .006). These associations justify continued investigation in other large clinical trials of brainstem glioma patients.

Indexed as

Magnetic Resonance ImagingAdolescentAntineoplastic Combined Chemotherapy ProtocolsBrain Stem NeoplasmsChildChild, PreschoolCombined Modality TherapyDiffusionFemaleGefitinibGliomaHumansMaleQuinazolinesQuinolonesRadiotherapy DosageGefitinibQuinazolinesQuinolonestipifarnib

Identifiers

PMID21297126
PMCPMC3064695
OpenAlexW2103139726

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.