A Study of a Retroviral Replicating Vector Combined With a Prodrug Administered to Patients With Recurrent Malignant Glioma

May 16, 2018 updated by: Tocagen Inc.

A Phase 1 Ascending Dose Trial of the Safety and Tolerability of Toca 511 in Patients With Recurrent High Grade Glioma

This is a multicenter, open-label, ascending-dose trial of the safety and tolerability of increasing doses of Toca 511, a Retroviral Replicating Vector (RRV), administered to patients with recurrent high grade glioma (rHGG) who have undergone surgery followed by adjuvant radiation therapy and chemotherapy. Patients will receive Toca 511 either via stereotactic, transcranial injection into their tumor or as an intravenous injection given daily for 3 & 5 days, depending on cohort. Approximately 3-4 weeks following injection of the RRV, treatment with Toca FC, an antifungal agent, will commence and will be repeated approximately every 6 weeks until study completion. After completion of this study, all patients will be eligible for enrollment and encouraged to enter a long-term continuation protocol that enables additional Toca FC treatment cycles to be given, as well as permits the collection of long-term safety and survival data.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
54

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • California
      • Duarte, California, United States, 91010
        • City of Hope
      • Los Angeles, California, United States, 90095
        • UCLA
      • San Diego, California, United States, 92093
        • UCSD
      • San Francisco, California, United States, 94143
        • UCSF
    • Michigan
      • Detroit, Michigan, United States, 48202
        • Henry Ford Hospital
    • New Jersey
      • Hackensack, New Jersey, United States, 07601
        • Hackensack University Medical Center
    • Ohio
      • Cleveland, Ohio, United States, 44195
        • Cleveland Clinic Foundation
      • Columbus, Ohio, United States, 43210
        • The Ohio State University
    • Pennsylvania
      • Pittsburgh, Pennsylvania, United States, 15232
        • University of Pittsburgh Medical Center
    • Texas
      • Houston, Texas, United States, 77030
        • The Methodist Hospital Research Institute

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • at least 18 years of age
  • for intratumoral cohorts, supratentorial HGG (WHO grade III or IV)
  • technically unresectable HGG
  • initial definitive therapy such as surgery with or without adjuvant radiation
  • subject elected not to undergo treatment with Gliadel wafer
  • if receiving corticosteroids, dose is stable or decreasing for past 7 days
  • KPS: at least 70
  • absolute neutrophil count > 1500/mm^3
  • absolute lymphocyte count > 500/mm^3
  • platelet count > 100,000/mm^3
  • hemoglobin > 10 g/dL
  • for intratumoral cohort, coagulation profile favorable to surgery
  • estimated glomerular filtration rate > 50 mL/min
  • ALT < 3 times ULN and bilirubin < 1.5 mg/dL
  • negative serum pregnancy test

Exclusion Criteria:

  • cytotoxic therapy within the past 4 weeks (6 weeks for BCNU/CCNU)
  • more than 2 recurrences including present recurrence
  • Gliadel wafer or wafers implanted within the past 8 weeks
  • taking more than 8 mg of dexamethasone per day
  • for intratumoral cohorts, injection of tumor would require violation of ventricular system
  • any infection requiring antibiotic, anticoagulant, or antiplatelet agents within the past 4 weeks
  • for intratumoral cohort, bleeding diathesis or use of anticoagulants/antiplatelet agents that cannot be stopped
  • allergy or intolerance to 5-FC
  • HIV positive
  • g.i. condition that would prevent ingestion or absorption of 5-FC
  • any investigational treatment within the past 30 days
  • pregnant or breast feeding
  • received Avastin
  • history of prior malignancy, excluding basal or squamous cell carcinoma of the skin, with an expected survival of less than 5 years.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: NA
  • Interventional Model: SINGLE_GROUP
  • Masking: NONE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
EXPERIMENTAL: Single arm
Toca 511 vector/ Toca FC prodrug
Biological: Toca 511 vector
Single, stereotactic, transcranial, intratumoral injection or intravenous injection
Other Names:
  • Gene Therapy
  • Retroviral Replicating Vector (RRV)
  • Gene Transfer
Drug: Toca FC
4-6 week cycles of Toca FC. Doses evaluated from 120 mg/kg/day or 300 mg/kg/day. Duration of dosing evaluated: 6 days, 7 days or 14 days.
Other Names:
  • flucytosine, 5-FC, 5-FC XR, Toca FC (extended release flucytosine)

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Maximum Feasible, Safe and Well Tolerated Dose of Toca 511
Time Frame: 8-10 weeks
8-10 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Safety and tolerability of repeated treatment with Toca FC following administration of Toca 511
Time Frame: 6 months
Review of adverse events including laboratory safety data (specifically any Grade 3 or higher non-hematologic toxicity or any Grade 4 or higher hematologic toxicity, felt to be related to Toca 511 or the Toca 511/Toca FC combination)
6 months
Overall survival of Subjects
Time Frame: Overall survivial, Overall survivial at 6 months (OS6), 9 months (OS9), and 12 months (OS12)
Overall survivial, Overall survivial at 6 months (OS6), 9 months (OS9), and 12 months (OS12)
Evaluate progression free survival (PFS) at 6 months
Time Frame: 6 months
6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Tocagen Inc.

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Manish Aghi, MD, NS, University of California, San Francisco

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 1, 2010

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 18, 2016

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 18, 2016

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 1, 2010

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 2, 2010

First Posted (ESTIMATE)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 5, 2010

Study Record Updates

Last Update Posted (ACTUAL)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 21, 2018

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 16, 2018

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Tg 511-08-01

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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