Evidence map›Paper›PMID 19636006›Full record

Trial reportJournal of clinical oncology : official journal of the American Society of Clinical Oncology2009

Talampanel with standard radiation and temozolomide in patients with newly diagnosed glioblastoma: a multicenter phase II trial.

Stuart A Grossman, Xiaobu Ye, Marc Chamberlain, Tom Mikkelsen, Tracy Batchelor, Serena Desideri, Steven Piantadosi, Joy Fisher, Howard A Fine

Open access · greenAbstract readClinical Trial, Phase IIMulticenter Study
In one paragraph

Trial report in Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed, 1 pooled it
7.5field-weighted citation impact, top 2% 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

90 citing papers in PubMed, 1 synthesis or guideline pooled it, 168 citations in OpenAlex.

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  11. Inhibitory glutamatergic feedback for brain tumor therapy.Medical oncology (Northwood, London, England) · 2026
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30 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

9 authors at 1 institution in 1 country.

Stuart A GrossmanSidney Kimmel Comprehensive Cancer Center at Johns Hopkins, 1550 Orleans St, Baltimore, MD 21231, USA. grossman@jhmi.edu
Xiaobu Ye
Marc Chamberlain
Tom Mikkelsen
Tracy Batchelor
Serena Desideri
Steven Piantadosi
Joy Fisher
Howard A Fine
Johns Hopkins University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeRecent data suggest that the glutamatergic system is important in the proliferation and migration of glioblastoma. Talampanel is a well-tolerated, oral alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor blocker that could be beneficial in this disease. PATIENTS AND

methodsThis trial was designed to estimate overall survival in adults with newly diagnosed glioblastoma treated with talampanel in addition to standard radiation (RT) and temozolomide (TMZ). A secondary purpose was to evaluate talampanel toxicity in this setting. Talampanel was initiated with RT + TMZ and discontinued for toxicity or disease progression. Survival was compared with historical controls.

resultsSeventy-two patients were enrolled from December 2005 to July 2006. Their median age was 60 years (range, 37 to 85 years, with 17% > 70 years), median Karnofsky performance score was 90 (range, 70 to 100), and 77% had a debulking procedure. With a median follow-up time of 18 months, 55 patients (76%) have died, yielding a median survival time of 18.3 months (95% CI, 14.6 to 22.5 months). When the 60 patients who were 18 to 70 years old were compared with the European Organisation for Research and Treatment of Cancer (EORTC) RT + TMZ data, the median survival (20.3 v 14.6 months, respectively) and percentage of patients surviving at 24 months (41.7% v 26.5%, respectively; P = .02) seemed superior. The percentage of patients methylated at O(6)-methylguanine-DNA methyltransferase was lower than on the EORTC study (29% v 43%, respectively). Talampanel was well tolerated and did not increase the known hematologic or nonhematologic toxicities of TMZ.

conclusionTalampanel can be added to RT + TMZ without significant additional toxicity. The encouraging survival results in methylated and unmethylated patients suggest that blocking AMPA receptors may be a useful strategy in newly diagnosed glioblastoma.

Indexed as

Cranial IrradiationAdministration, OralAdultAgedAged, 80 and overAntineoplastic Agents, AlkylatingAntineoplastic Combined Chemotherapy ProtocolsBenzodiazepinesBrain NeoplasmsDacarbazineDNA MethylationDNA Modification MethylasesDNA Repair EnzymesExcitatory Amino Acid AntagonistsFemaleGlioblastomaAntineoplastic Agents, AlkylatingBenzodiazepinesDacarbazineDNA Modification MethylasesDNA Repair EnzymesExcitatory Amino Acid AntagonistsMGMT protein, humanReceptors, AMPAtalampanelTemozolomideTumor Suppressor Proteins

Identifiers

PMID19636006
PMCPMC2734427
OpenAlexW2097333265

What OpenQuestion holds

Textmetadata
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.