This is the classic website, which will be retired eventually. Please visit the modernized instead.
Working… Menu

Novel Gamma-Delta (γδ)T Cell Therapy for Treatment of Patients With Newly Diagnosed Glioblastoma (DRI)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT04165941
Recruitment Status : Active, not recruiting
First Posted : November 18, 2019
Last Update Posted : January 24, 2024
In8bio Inc.
Information provided by (Responsible Party):
Louis Burt Nabors, MD, University of Alabama at Birmingham

Brief Summary:
This study is being conducted to find out if the safety and tolerability of an experimental cell therapy is safe to administer to patients with a newly diagnosed glioblastoma multiforme (GBM) in combination with temozolomide (TMZ).

Condition or disease Intervention/treatment Phase
Brain Tumor Adult Biological: DRI cell therapy Phase 1

Detailed Description:

The cell therapy that is being used in this study is called gene-modified gamma delta T cells or Drug Resistant Immunotherapy (DRI). Gamma delta T cells are a type of lymphocyte or white blood cell that may help the immune system to recognize and kill cancer cells. Some chemotherapy can kill these gamma delta T cells. For the cell therapy being used in this study, the genes or DNA within these gamma delta T cells are modified so they are resistant to or may not be affected by chemotherapy. The chemotherapy that is being used in this study is called temozolomide (TMZ) and can reduce the number of these gamma delta T cells or lymphocytes. This study will also find out if these modified gamma delta T cells (DRI) are unaffected by TMZ. The DRI is given in combination with a standard dose of TMZ and is administered into the brain where the tumor is located.

After subjects are consented in Parts A and B of the study, approximately about 2 tablespoons of blood will be collected for tests that may provide additional information about subjects T cells and how they may respond to treatment.

Part A Subjects will have a surgical procedure completed that will remove their tumor (called a surgical resection). They will have a Rickham catheter placed which is a device typically used to deliver chemotherapy into the brain. The infusion catheter will be placed first prior to the tumor resection. A sample of tumor tissue will be taken and examined to confirm the diagnosis of GBM. The diagnosis of GBM must be confirmed prior to beginning Part B.

Part B After the surgical resection and on Study Day 1, subjects will return to the study doctor's office/clinic to undergo a procedure called apheresis. This procedure will separate out cells called peripheral blood mononuclear cells (PBMC). Apheresis is the removal of blood plasma from the body by collecting your blood and separating the plasma from the PBMCs. These cells include the gamma delta T cells that will be used to synthesize the DRI γδ T cells. Once the cells for the DRI γδ T cells are synthesized, they are reintroduced into subject's brain through the Rickham catheter.

Following apheresis and confirmation that the required number of gamma delta T cells were collected, subjects will begin the recommended or standard of care treatment for newly diagnosed GBM. This will include 6 weeks of chemotherapy with TMZ and radiation. Subjects will then have about 4 weeks of no treatment prior to beginning the Part B maintenance phase of treatment, which includes 6 cycles of TMZ. Depending on which dose level they receive, they will be administered either 1 injection of the DRI γδ T cells or 3 and these will be injected through the Rickham catheter.

The first 3 subjects will receive a single dose of the DRI γδ T cells at the lowest dose level. Subjects receiving a single dose of the DRI γδ T cells will be observed for a of minimum 30 days from the time the first subject is enrolled, followed by a minimum of 7 days between each additional subject enrolled to allow for evaluation of potential side effects. If the DRI γδ T cell injection does not cause serious side effects, the second set of 3 subjects will be enrolled. The second set of 3 patients will receive 3 doses of the DRI γδ T cells. The approximate duration of the study may be up to 15 years, or until disease progression or subjects withdraw from the study.

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 21 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase I Study of Drug Resistant Immunotherapy (DRI) With Activated, Gene Modified γδ T Cells in Patients With Newly Diagnosed Glioblastoma Multiforme Receiving Maintenance Temozolomide Chemotherapy
Actual Study Start Date : February 11, 2020
Estimated Primary Completion Date : December 31, 2024
Estimated Study Completion Date : December 31, 2024

Arm Intervention/treatment
Experimental: DRI cell therapy
The only arm will receive the DRI modified gamma delta T cells following standard therapy with radiation and temozolomide chemotherapy concurrent.
Biological: DRI cell therapy
Drug Resistant Immunotherapy with gamma delta modified T cells to be resistance to temozolomide will be infused into the surgical cavity following the completion of standard concurrent radiation and chemotherapy with temozolomide.

Primary Outcome Measures :
  1. Primary: Highest safe dose frequency or maximally planned dose, if no dose-limiting toxicity observed. [ Time Frame: 12 weeks ]
    Safety and toxicity of intracranially infused DRI gamma delta T cells

Secondary Outcome Measures :
  1. Time to progression [ Time Frame: Through study completion, on average one year ]
    Time to disease progression

  2. Overall survival [ Time Frame: Through study completion, on average one year ]
    Time that participants survive

  3. Assessment of biological activity [ Time Frame: Through study completion, on average one year ]
    Serum measurements of cell therapy activity

Information from the National Library of Medicine

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, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Must have magnetic resonance imaging (MRI) features consistent with and suspicious for malignant glioma. This will be Part A - Tissue (biopsy) and Rickham catheter placement.
  • Must have histologically or cytologically confirmed glioblastoma multiforme prior to administration of the DRI γδ T cell injection. This will be Part B - Screening and Study Treatment.
  • Prior therapy: Must have completed a standard temozolomide and radiotherapy treatment as described in Part A and be eligible to receive maintenance therapy with temozolomide (consistent with NCCN guidelines for newly diagnosed GBM and maintenance therapy).
  • Age ≥18 yearsΦ: Because no dosing or adverse event data are currently available on the use of γδ T cells in patients <18 years of age, children are excluded from this study but will be eligible for future pediatric Phase I single-agent trials.
  • Karnofsky Performance Status ≥70%
  • Life expectancy of greater than 12 weeks
  • Patients must have organ and marrow function as defined below:

    1. leukocytes >3,000/µl
    2. absolute neutrophil count >1,500/µl
    3. Hgb greater than or equal to 9.0 g/dL
    4. platelets >100,000/µl
    5. total bilirubin within normal institutional limits
    6. AST (SGOT)/ALT (SGPT) <2.5 X institutional upper limit of normal
    7. Normal electrolyte levels including sodium, calcium, potassium, chloride and magnesium
    8. INR/PT/aPTT ≤1.5xULN
    9. Normal EKG; if abnormal, NCS
    10. Normal blood presure as adjusted for age
  • Creatinine within normal institutional limits or if higher than the normal range, calculated creatinine clearance (CrCl) must be ≥ 50 mL/min/1.73 m2 (e.g., by Cockcroft-Gault formula); actual body weight must be used for CrCl unless body mass index (BMI) is > 30 kg/m2, in which case, lean body weight must be used

Exclusion Criteria:

  • Patients who have received any therapy for the treatment of GBM prior to inclusion in Part A and any treatment other than standard of care as described in Part A of this study including: cellular immunotherapy or gene therapy within 6 weeks prior to entering the study, surgical resection or alkylating agent chemotherapy within 4 weeks prior to entering the study, or have received experimental immunotherapy at any time, and those who have not recovered from adverse events due to therapeutic interventions administered more than 4 weeks earlier.
  • Patients may not be receiving any other investigational agents.
  • Contraindication to the placement of an intracranial access device (Rickham catheter) at the time of surgery.
  • Prior history of encephalitis, multiple sclerosis, or other CNS infection
  • Required steroid increase within 2 weeks of scheduled DRI γδ T cells administration.
  • Uncontrolled intercurrent illness including, but not limited to ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or any othermedical condition that precludes surgery. Also, psychiatric illness/social situations that would limit compliance with study requirements.
  • Allergies/hypersensitivity: Aminobisphosphonates such as Zoledronate®, Pamidronate® or similar
  • Pregnant women are excluded from this study because the lentiviral- modified γδ T cells designed to express MGMT cells have an unknown potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with these cells, breastfeeding should be discontinued if the mother is treated with the lentiviral-modified γδ T cells designed to express MGMT. The following birth control methods are acceptable for this study in women of child- bearing potential:
  • A Combination of TWO of the following:

    1. Barrier method of contraception:

      1. condoms (male or female) with or without a spermicidal agent, diaphragm or cervical cap with spermicide
      2. IUD
    2. Hormone-based Contraceptive
  • Note: Drug-drug interactions with some ARVs will make hormonal contraception a less reliable method.
  • Because patients with immune deficiency will be unable to mount the anticipated immune response underlying this therapeutic rationale, HIV-seropositive patients are excluded from this study.
  • Some of the contraceptive methods listed above may not prevent the spread of HIV to other people. Patients should discuss their contraceptive choices with their health care provider to choose the best way to both prevent pregnancy as required by this study and to prevent the spread of HIV to any partner(s).
  • Patients with history of prior organ or bone marrow transplantation are not eligible.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT04165941

Layout table for location information
United States, Alabama
University of Alabama at Birmingham
Birmingham, Alabama, United States, 35294
Sponsors and Collaborators
University of Alabama at Birmingham
In8bio Inc.
Layout table for investigator information
Principal Investigator: Louis B Nabors, MD University of Alabama at Birmingham
Layout table for additonal information
Responsible Party: Louis Burt Nabors, MD, Professor, Neurology Chair Office, University of Alabama at Birmingham Identifier: NCT04165941    
Other Study ID Numbers: UAB 1773
First Posted: November 18, 2019    Key Record Dates
Last Update Posted: January 24, 2024
Last Verified: January 2024
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Layout table for additional information
Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Louis Burt Nabors, MD, University of Alabama at Birmingham:
Newly diagnosed brain tumor
Phase 1
Drug Resistant Immunotherapy
Additional relevant MeSH terms:
Layout table for MeSH terms
Brain Neoplasms
Neoplasms, Neuroepithelial
Neuroectodermal Tumors
Neoplasms, Germ Cell and Embryonal
Neoplasms by Histologic Type
Neoplasms, Glandular and Epithelial
Neoplasms, Nerve Tissue
Central Nervous System Neoplasms
Nervous System Neoplasms
Neoplasms by Site
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases