Evidence map›Paper›PMID 29762717›Full record

ArticleNeuro-oncology2018

Durable complete responses in some recurrent high-grade glioma patients treated with Toca 511 + Toca FC.

Timothy F Cloughesy, Joseph Landolfi, Michael A Vogelbaum, Derek Ostertag, James B Elder, Stephen Bloomfield, Bob Carter, Clark C Chen, Steven N Kalkanis, Santosh Kesari and 16 more

Registry-linked trialOpen access · bronzeAbstract readClinical Trial, Phase I
In one paragraph

Article in Neuro-oncology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01470794 (A Phase 1 Ascending Dose Trial of Safety and Tolerability of Toca 511, a Retroviral Replicating Vector, Administered to Subjects at the Time of Resection for Recurrent High Grade Glioma & Followed by Treatment With Toca FC, Extended-Release 5-FC), which is not on this map. Cited by 118 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
118citing papers in PubMed, 1 pooled it
13.7field-weighted citation impact, top 1% 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.

NCT01470794 phase1completednot on this map

A Phase 1 Ascending Dose Trial of Safety and Tolerability of Toca 511, a Retroviral Replicating Vector, Administered to Subjects at the Time of Resection for Recurrent High Grade Glioma & Followed by Treatment With Toca FC, Extended-Release 5-FC

TypeinterventionalSponsorTocagen Inc.Ran2012 to 2016Enrolled58ConditionsGlioblastoma Multiforme, Anaplastic Astrocytoma, Anaplastic Oligodendroglioma, Anaplastic OligoastrocytomaArmsToca 511 vector, Toca FC
3 · Its place in the literature

Who cites it

118 citing papers in PubMed, 1 synthesis or guideline pooled it, 174 citations in OpenAlex.

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  3. Next-generation therapeutics for glioblastoma: Challenges and future directions.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
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58 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

26 authors at 8 institutions in 1 country.

Timothy F CloughesyDepartments of Neuro-Oncology and Neurosurgery, University of California, Los Angeles, California.
Joseph LandolfiNew Jersey Neuroscience Institute, JFK Brain Tumor Center, Edison, New Jersey.
Michael A VogelbaumCleveland Clinic Foundation, Cleveland, Ohio.
Derek OstertagTocagen Inc., San Diego, California.
James B ElderOhio State University Wexner Medical Center, Columbus, Ohio.
Stephen BloomfieldNew Jersey Neuroscience Institute, JFK Brain Tumor Center, Edison, New Jersey.
Bob CarterMoores Cancer Center, Department of Neurosciences, University of California, San Diego, California.
Clark C ChenMoores Cancer Center, Department of Neurosciences, University of California, San Diego, California.
Steven N KalkanisHenry Ford Hospital, Detroit, Michigan.
Santosh KesariMoores Cancer Center, Department of Neurosciences, University of California, San Diego, California.
Albert LaiDepartments of Neuro-Oncology and Neurosurgery, University of California, Los Angeles, California.
Ian Y LeeHenry Ford Hospital, Detroit, Michigan.
Linda M LiauDepartments of Neuro-Oncology and Neurosurgery, University of California, Los Angeles, California.
Tom MikkelsenHenry Ford Hospital, Detroit, Michigan.
Phioanh NghiemphuDepartments of Neuro-Oncology and Neurosurgery, University of California, Los Angeles, California.
David PiccioniMoores Cancer Center, Department of Neurosciences, University of California, San Diego, California.
William AccomandoTocagen Inc., San Diego, California.
Oscar R DiagoTocagen Inc., San Diego, California.
Daniel J HoganTocagen Inc., San Diego, California.
Dawn GammonTocagen Inc., San Diego, California.
Noriyuki KasaharaTocagen Inc., San Diego, California.
Thian KheohTocagen Inc., San Diego, California.
Douglas J JollyTocagen Inc., San Diego, California.
Harry E GruberTocagen Inc., San Diego, California.
Asha DasTocagen Inc., San Diego, California.
Tobias WalbertHenry Ford Hospital, Detroit, Michigan.
Retriev Technologies (United States) · USHenry Ford Hospital · USUniversity of California, Los Angeles · USUniversity of California, San Diego · USJohn F. Kennedy Medical Center · USCleveland Clinic · USThe Ohio State University Wexner Medical Center · USUniversity of Miami · US

Funding

UCLA SPORE in Brain CancerP50CA211015 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI Yvonne Yu-Hsuan Chen · 2017 to 2026
$25.2M
NCI NIH HHS P50 CA211015
6 · The paper itself

Abstract

Background: Vocimagene amiretrorepvec (Toca 511) is an investigational gamma-retroviral replicating vector encoding cytosine deaminase that, when used in combination with extended-release 5-fluorocytosine (Toca FC), results preclinically in local production of 5-fluorouracil, depletion of immune-suppressive myeloid cells, and subsequent induction of antitumor immunity. Recurrent high-grade glioma (rHGG) patients have a high unmet need for effective therapies that produce durable responses lasting more than 6 months. In this setting, relapse is nearly universal and most responses are transient. Methods: In this Toca 511 ascending-dose phase I trial (NCT01470794), HGG patients who recurred after standard of care underwent surgical resection and received Toca 511 injected into the resection cavity wall, followed by orally administered cycles of Toca FC. Results: Among 56 patients, durable complete responses were observed. A subgroup was identified based on Toca 511 dose and entry requirements for the follow-up phase III study. In this subgroup, which included both isocitrate dehydrogenase 1 (IDH1) mutant and wild-type tumors, the durable response rate is 21.7%. Median duration of follow-up for responders is 35.7+ months. As of August 25, 2017, all responders remain in response and are alive 33.9+ to 52.2+ months after Toca 511 administration, suggesting a positive association of durable response with overall survival. Conclusions: Multiyear durable responses have been observed in rHGG patients treated with Toca 511 + Toca FC in a phase I trial, and the treatment will be further evaluated in a randomized phase III trial. Among IDH1 mutant patients treated at first recurrence, there may be an enrichment of complete responders.

Indexed as

Drug SynergismAntimetabolitesBrain NeoplasmsCombined Modality TherapyCytosine DeaminaseFlucytosineFluorouracilFollow-Up StudiesGenetic VectorsGliomaHumansPrognosisRetroviridaeSurvival RateAntimetabolitesCytosine DeaminaseFlucytosineFluorouracil

Identifiers

PMID29762717
PMCPMC6120351
OpenAlexW2800438974

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.