NCT04165941

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).

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
22

participants targeted

Target at P25-P50 for phase_1

Timeline
8mo left

Started Feb 2020

Longer than P75 for phase_1

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress91%
Feb 2020Dec 2026

First Submitted

Initial submission to the registry

November 12, 2019

Completed
6 days until next milestone

First Posted

Study publicly available on registry

November 18, 2019

Completed
3 months until next milestone

Study Start

First participant enrolled

February 11, 2020

Completed
6.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2026

Last Updated

December 26, 2025

Status Verified

December 1, 2025

Enrollment Period

6.9 years

First QC Date

November 12, 2019

Last Update Submit

December 18, 2025

Conditions

Keywords

Newly diagnosed brain tumorPhase 1Drug Resistant ImmunotherapyTemozolomide

Outcome Measures

Primary Outcomes (1)

  • Primary: Highest safe dose frequency or maximally planned dose, if no dose-limiting toxicity observed.

    Safety and toxicity of intracranially infused DRI gamma delta T cells

    12 weeks

Secondary Outcomes (3)

  • Time to progression

    Through study completion, on average one year

  • Overall survival

    Through study completion, on average one year

  • Assessment of biological activity

    Through study completion, on average one year

Study Arms (1)

DRI cell therapy

EXPERIMENTAL

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

Interventions

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.

DRI cell therapy

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • 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:
  • leukocytes \>3,000/µl
  • absolute neutrophil count \>1,500/µl
  • Hgb greater than or equal to 9.0 g/dL
  • platelets \>100,000/µl
  • total bilirubin within normal institutional limits
  • AST (SGOT)/ALT (SGPT) \<2.5 X institutional upper limit of normal
  • Normal electrolyte levels including sodium, calcium, potassium, chloride and magnesium
  • INR/PT/aPTT ≤1.5xULN
  • +3 more criteria

You may not qualify if:

  • 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:
  • Barrier method of contraception:
  • condoms (male or female) with or without a spermicidal agent, diaphragm or cervical cap with spermicide
  • IUD
  • 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).
  • +1 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Alabama at Birmingham

Birmingham, Alabama, 35294, United States

Location

Related Publications (2)

  • Nabors LB, Lamb LS, Goswami T, Rochlin K, Youngblood SL. Adoptive cell therapy for high grade gliomas using simultaneous temozolomide and intracranial mgmt-modified gammadelta t cells following standard post-resection chemotherapy and radiotherapy: current strategy and future directions. Front Immunol. 2024 Feb 7;15:1299044. doi: 10.3389/fimmu.2024.1299044. eCollection 2024.

  • Zhao Y, Dong P, He W, Zhang J, Chen H. gammadelta T cells: Major advances in basic and clinical research in tumor immunotherapy. Chin Med J (Engl). 2024 Jan 5;137(1):21-33. doi: 10.1097/CM9.0000000000002781. Epub 2023 Aug 18.

Study Officials

  • Louis B Nabors, MD

    University of Alabama at Birmingham

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 1
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor, Neurology Chair Office

Study Record Dates

First Submitted

November 12, 2019

First Posted

November 18, 2019

Study Start

February 11, 2020

Primary Completion (Estimated)

December 31, 2026

Study Completion (Estimated)

December 31, 2026

Last Updated

December 26, 2025

Record last verified: 2025-12

Data Sharing

IPD Sharing
Will not share

Locations