Evidence map›Paper›PMID 29415215›Full record

Trial reportNeuro-oncology2018

Hypoxia-activated evofosfamide for treatment of recurrent bevacizumab-refractory glioblastoma: a phase I surgical study.

Andrew Brenner, Richard Zuniga, Jessica D Sun, John Floyd, Charles P Hart, Stew Kroll, Lisa Fichtel, David Cavazos, Laura Caflisch, Aleksandra Gruslova and 4 more

Abstract readClinical Trial, Phase IRandomized Controlled Trial
In one paragraph

Trial report in Neuro-oncology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 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

24 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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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

14 authors.

Andrew BrennerUniversity of Texas Health San Antonio Cancer Center, San Antonio, Texas.
Richard ZunigaUniversity of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, Texas.
Jessica D SunThreshold Pharmaceuticals, South San Francisco, California.
John FloydUniversity of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, Texas.
Charles P HartThreshold Pharmaceuticals, South San Francisco, California.
Stew KrollUniversity of Texas Health San Antonio Cancer Center, San Antonio, Texas.
Lisa FichtelSouth Texas Oncology and Hematology, San Antonio, Texas.
David CavazosUniversity of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, Texas.
Laura CaflischUniversity of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, Texas.
Aleksandra GruslovaUniversity of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, Texas.
Shiliang HuangUniversity of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, Texas.
Yichu LiuUniversity of Texas Health Science Center at San Antonio (UTHSCSA), San Antonio, Texas.
Alessia LodiUniversity of Texas, Austin, Texas.
Stefano TizianiUniversity of Texas, Austin, Texas.

Funding

Clinical Development of Rhenium Nanoliposomes (RNL186) for GlioblastomaR01CA235800 · NCI · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI BRENNER, ANDREW JACOB · 2019 to 2023
$3.0M
Phase 2 Study of TH-302 for the Treatment of GlioblastomaR01FD004400 · FDA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI BRENNER, ANDREW JACOB · 2014 to 2020
$1.8M
FDA HHS R01 FD004400NCI NIH HHS R01 CA235800
6 · The paper itself

Abstract

Background: Anti-angiogenic therapy is known to induce a greater degree of hypoxia, including in glioblastoma (GBM). Evofosfamide (Evo) is a hypoxia-activated prodrug which is reduced, leading to the release of the alkylating agent bromo-isophosphoramide mustard. We assessed the safety, tolerability, preliminary efficacy, and biomarkers of Evo plus bevacizumab (Bev) in Bev-refractory GBM. Methods: Twenty-eight patients with Bev-refractory GBM were enrolled in a dose escalation study receiving from 240 mg/m2 (cohort 1) to 670 mg/m2 (cohort 4) of Evo every 2 weeks in combination with Bev. Patients deemed surgical candidates underwent a single dose of Evo or placebo with pimonidazole immediately prior to surgery for biomarker evaluation, followed by dose escalation upon recovery. Assessments included adverse events, response, and survival. Results: Evo plus Bev was well tolerated up to and including the maximum dose of 670 mg/m2, which was determined to be the recommended phase II dose. Overall response rate was 17.4%, with disease control (complete response, partial response, and stable disease) observed in 14 (60.9%) of the 23 patients. The ratio of enhancement to non-enhancement was significant on log-rank analysis with time to progression (P = 0.023), with patients having a ratio of less than 0.37 showing a median progression-free survival of 98 days versus 56 days for those with more enhancement. Conclusions: Evo plus Bev was well tolerated in patients with Bev-refractory GBM, with preliminary evidence of activity that merits further investigation.

Indexed as

Drug Resistance, NeoplasmHypoxiaSalvage TherapyAdultAgedAntineoplastic Combined Chemotherapy ProtocolsBevacizumabBrain NeoplasmsCombined Modality TherapyFemaleFollow-Up StudiesGlioblastomaHumansMaleMiddle AgedNeoplasm Recurrence, LocalBevacizumabNitroimidazolesPhosphoramide MustardsTH 302

Identifiers

PMID29415215
PMCPMC6071657

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.