Trial record 2 of 6 for:    tocagen

P2/3 Randomized Study of Toca 511 & Toca FC Versus SOC in Subjects Undergoing Surgery for Recurrent GBM/AA (Toca5)

This study is currently recruiting participants. (see Contacts and Locations)
Verified November 2015 by Tocagen Inc.
Information provided by (Responsible Party):
Tocagen Inc. Identifier:
First received: April 3, 2015
Last updated: November 6, 2015
Last verified: November 2015
This is a multicenter, randomized, open-label phase 2/3 study of Toca 511 and Toca FC versus standard of care that comprises Investigator's choice of single agent chemotherapy (lomustine or temozolomide) or bevacizumab administered to subjects undergoing resection for first or second recurrence (including this recurrence) of GBM or AA. Subjects meeting all of the inclusion and none of the exclusion criteria will be randomized prior to surgery in a 1:1 ratio to receive either Toca 511 and Toca FC (Experimental arm, Arm T) or control treatment with one option of standard of care (Arm SOC). Due to the prognostic influence of molecular subgroups such as isocitrate dehydrogenase mutation, the trial will be stratified based on this determination from the primary pathology or subsequent biopsy known locally or otherwise determined centrally. A second stratification factor is based on the patient's Karnofsky Performance Score (KPS) (70-80 vs 90-100). Further, to account for potential differences in treatment choices for the control arm in regions, the trial will be stratified by geographical region during the randomization process. The study will be conducted in 2 parts; enrollment in the phase 3 will begin after phase 2 results are available.

Condition Intervention Phase
Glioblastoma Multiforme
Anaplastic Astrocytoma
Biological: Toca 511
Drug: Toca FC
Drug: Lomustine
Drug: Temozolomide
Biological: Bevacizumab
Phase 2
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Phase 2/3 Randomized, Open-Label Study of Toca 511, a Retroviral Replicating Vector & Toca FC Versus Standard of Care in Subjects Undergoing Planned Resection for Recurrent Glioblastoma (GBM) or Anaplastic Astrocytoma (AA) "Toca 5"

Resource links provided by NLM:

Further study details as provided by Tocagen Inc.:

Primary Outcome Measures:
  • Compare overall survival between two arms (requires 116 events) [ Time Frame: 21 months from first patient randomized ] [ Designated as safety issue: No ]

Estimated Enrollment: 170
Study Start Date: November 2015
Estimated Study Completion Date: September 2019
Estimated Primary Completion Date: November 2017 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Toca 511/Toca FC

Resection followed by administration of up to 4 mL Toca 511 (vocimagene amiretrorepvec). Toca 511 is administered by injection into the wall of the subject's tumor resection cavity on Day 1 (up to 40 injections of 0.1 mL)

Toca FC is an extended-release formulation of flucytosine. Toca FC will be administered at 220 mg/kg/day orally for 7-day courses beginning at least 6 weeks after resection and repeated approximately every 6 weeks.

Biological: Toca 511
Toca 511 consists of a purified retroviral replicating vector encoding a modified yeast cytosine deaminase (CD) gene. The CD gene converts the antifungal 5-flurocytosine (5FC) to the anticancer drug 5-FU in cells that have been infected by the Toca 511 vector.
Other Names:
  • vocimagene amiretrorepvec
  • RRV
  • retroviral replicating viral
Drug: Toca FC
Toca FC is an extended-release formulation of flucytosine. Toca FC is supplied as 500 mg white, oblong tablets with "TOCA FC" embossed on one side and "500" embossed on the other side
Other Names:
  • flucytosine
  • 5-FC
  • 5-fluorocytosine
Active Comparator: Lomustine, temozolomide, or bevacizumab

Investigator selects one of the following:

Bevacizumab: Beginning 6 weeks after tumor resection, bevacizumab will be administered by IV infusion at 10 mg/kg and repeated every 2 weeks. Refer to the prescribing information and to institutional guidelines for details on the administration procedure.

Lomustine: Beginning 6 weeks after tumor resection, lomustine will be administered as a single oral dose of 110 mg/m2 and repeated every 6 weeks. Refer to the prescribing information and to institutional guidelines for details regarding the administration procedure.

Temozolomide: Beginning 6 weeks after tumor resection, temozolomide will be administered per 1 of 2 options:

  • at a dose of 50 mg/m2 PO once daily continuously, or
  • at an initial dose of 150 mg/m2 IV or PO once daily for 5 consecutive days per 28-day treatment cycle that may be raised to 200 mg/ m2 once daily for 5 consecutive days in the following 28-day treatment cycles
Drug: Lomustine
Other Names:
  • CCNU
  • CeeNU
Drug: Temozolomide
Other Name: Temodar
Biological: Bevacizumab
Other Name: Avastin


Ages Eligible for Study:   18 Years to 75 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Subject has given written informed consent
  2. Subject is between 18 years old and 75 years old, inclusive
  3. Subjects must have histologically proven GBM or AA in first or second recurrence (including this recurrence) or progression following initial definitive multimodal therapy with surgery, temozolomide (unless MGMT promoter unmethylated) and radiation (confirmed by diagnostic biopsy with local pathology review or contrast enhanced MRI). If first recurrence of GBM is documented by MRI, an interval of at least 12 weeks after the end of prior radiation therapy is required unless there is either: i) histopathologic confirmation of recurrent tumor, or ii) new enhancement on MRI outside of the radiotherapy treatment field
  4. Subjects must have measurable disease preoperatively, defined as at least 1 contrast enhancing lesion, measuring at least 1 cm in 2 planes (axial, coronal, or sagittal)
  5. Subjects must be at least 4 weeks post last dose of temozolomide
  6. Prior gamma knife, stereotactic radiosurgery, or other focal high-dose radiotherapy is allowed but the subject must have either histopathologic confirmation of recurrent tumor, or new enhancement on MRI outside of the radiotherapy treatment field
  7. Based on the pre operative evaluation by neurosurgeon, the subject is a candidate for ≥ 80% resection of enhancing region
  8. IDH mutation status of the primary tumor must be available or tumor samples must be available for pre randomization testing
  9. Laboratory values adequate for patient to undergo surgery, including:

    • Platelet count ≥ 60,000/mm3
    • Hgb ≥ 10 g/dL
    • Absolute neutrophil count (ANC) ≥ 1,500/mm3
    • Absolute lymphocyte count (ALC) ≥ 500/mm3
    • Adequate liver function, including:

      • Total bilirubin ≤ 1.5 x ULN (unless has Gilbert's syndrome)
      • ALT ≤ 2.5 x ULN f. Estimated glomerular filtration rate of at least 50 mL/min by the Cockcroft Gault formula below:
  10. Women of childbearing potential (≥12 months of non-therapy-induced amenorrhea or surgically sterile) must have had a negative serum pregnancy test within the past 21 days and must use a birth control method in addition to barrier methods (condoms).
  11. Subject or subject's partner is willing to use condoms for 12 months after receiving Toca 511 or until there is no evidence of the virus in his/her blood, whichever is longer.
  12. The subject has a KPS ≥ 70
  13. The subject is willing and able to abide by the protocol

Exclusion Criteria:

  1. History of more than 2 prior recurrences (including this recurrence) of GBM or AA
  2. History of other malignancy, unless the patient has been disease free for at least 5 years. Adequately treated basal cell carcinoma or squamous cell skin cancer is acceptable regardless of time, as well as localized prostate carcinoma or cervical carcinoma in situ after curative treatment
  3. Histological confirmed oligodendroglioma or mixed glioma
  4. Known 1p/19q co deletion
  5. A contrast enhancing brain tumor that is any of the following:

    • Multi focal (defined as 2 separate areas of contrast enhancement measuring at least 1 cm in 2 planes that are not contiguous on either fluid attenuated inversion recovery (FLAIR) or T2 sequences);
    • Associated with either diffuse subependymal or leptomeningeal dissemination; or > 5 cm in any dimension
  6. The subject has or had any active infection requiring antibiotic, antifungal or antiviral therapy within the past 4 weeks
  7. The subject has any bleeding diathesis, or must take anticoagulants, or antiplatelet agents, including nonsteroidal anti inflammatory drugs (NSAIDs), at the time of the scheduled resection that cannot be stopped for surgery
  8. The subject is HIV positive
  9. The subject has a history of allergy or intolerance to flucytosine
  10. The subject has a gastrointestinal disease that would prevent him or her from being able to swallow or absorb flucytosine
  11. The subject received cytotoxic chemotherapy within the past 4 weeks (6 weeks for nitrosoureas) of the planned surgery date
  12. The subject received any investigational treatment within the past 30 days or prior immunotherapy or antibody therapy within the past 45 days.
  13. The subject is breast feeding
  14. The subject intends to undergo treatment with the Gliadel® wafer at the time of this surgery or has received the Gliadel® wafer < 30 days from W1D1 (surgery)
  15. The subject has received bevacizumab for their disease unless in the context of primary therapy for newly diagnosed glioma
  16. For subjects planned to potentially receive bevacizumab, they have no evidence of uncontrolled hypertension (defined as a blood pressure of ≥ 150 mm Hg systolic and/or ≥ 100 mm Hg diastolic on medication) or active GI perforation
  17. The subject has received systemic dexamethasone continuously at a dose > 8 mg/day for 8 weeks prior to the date of the screening assessment
  18. Severe pulmonary, cardiac or other systemic disease, specifically:

    • New York Heart Association > Grade 2 congestive heart failure within 6 months prior to study entry, unless asymptomatic and well controlled with medication
    • Uncontrolled or significant cardiovascular disease, clinically significant ventricular arrhythmia (such as ventricular tachycardia, ventricular fibrillation, or Torsades des pointes), clinically significant pulmonary disease (such as ≥ Grade 2 dyspnea, according to CTCAE 4.03)
    • Subjects who have any other disease, either metabolic or psychological, which as per Investigator assessment may affect the subject's compliance or place the subject at higher risk of potential treatment complications
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT02414165

Contact: Asha Das, MD 858-412-8468
Contact: Mary Rose Keller 858-412-8440

United States, California
University of California, Irvine Recruiting
Irvine, California, United States, 92868
Contact: Jinah Chung    714-456-8442   
Contact: Blake Johnson    714-456-3476   
Principal Investigator: Daniela Bota, MD PhD         
United States, Michigan
Henry Ford Health System Recruiting
Detroit, Michigan, United States, 48202
Contact: John Gaggin, RN BSN    313-916-3137   
Contact: Stephanie Marl    313-916-7231   
Principal Investigator: Tobias Walbert, MD         
Sponsors and Collaborators
Tocagen Inc.
Principal Investigator: Timothy Cloughesy, MD University of California, Los Angeles
  More Information

Central Brain Tumor Registry of the United States. 2014 CBTRUS Fact Sheet. Accessed March 30, 2015 at, M. Treatment options for glioblastoma. Neurosurg Focus 20 (4):E19, 2006.

Responsible Party: Tocagen Inc. Identifier: NCT02414165     History of Changes
Other Study ID Numbers: Tg 511-15-01
Study First Received: April 3, 2015
Last Updated: November 6, 2015
Health Authority: United States: Food and Drug Administration

Keywords provided by Tocagen Inc.:

Additional relevant MeSH terms:
Neoplasms by Histologic Type
Neoplasms, Germ Cell and Embryonal
Neoplasms, Glandular and Epithelial
Neoplasms, Nerve Tissue
Neoplasms, Neuroepithelial
Neuroectodermal Tumors
Alkylating Agents
Angiogenesis Inhibitors
Angiogenesis Modulating Agents
Anti-Infective Agents
Antifungal Agents
Antineoplastic Agents
Antineoplastic Agents, Alkylating
Growth Inhibitors
Growth Substances
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Physiological Effects of Drugs
Therapeutic Uses processed this record on November 25, 2015