Dendritic Cell Immunotherapy for Treatment of Adult GBM

Last updated: June 9, 2025
Sponsor: Diakonos Oncology Corporation
Overall Status: Active - Recruiting

Phase

2

Condition

Gliomas

Astrocytoma

Treatment

DOC1021

SOC cranial radiation

Temodar (Temozolomide)

Clinical Study ID

NCT06805305
DOC-GBM2
  • Ages > 18
  • All Genders

Study Summary

The goal of this clinical trial is to learn if DOC1021 + pIFN alongside standard of care (SOC) will improve survival in adult patients newly diagnosed with glioblastoma (IDH-wt). It will also evaluate the safety of DOC1021 + pIFN. Researchers will compare DOC1021 dendritic cell immunotherapy regimen added to SOC compared to SOC treatment alone.

Participants in the DOC1021 + pIFN + SOC arm will:

  • Take filgrastim subcutaneously x 5 doses and subsequently undergo a leukapheresis collection

  • Undergo ultrasound guided perinodal DOC1021 injections every 2 weeks for a total of 3 doses

  • Receive subcutaneous pIFN injections weekly for a total of 6 doses in parallel with the DOC1021 injections

Both arms of the trial will:

  • Visit the clinic regularly to assess quality of life, symptoms, medication use, imaging, bloodwork, and to receive SOC treatment with surgery, temozolomide chemotherapy and radiation

Eligibility Criteria

Inclusion

Inclusion Criteria:

  1. Provision of signed and dated informed consent form

  2. Stated willingness to comply with all study procedures and availability for theduration of the study

  3. Age 18 years or older

  4. Presumed diagnosis of GBM deemed to be potentially resectable and deemed to be agood candidate for postoperative standard of care temozolomide and radiationtherapy.

  5. The surgical objective is for gross total resection (GTR)/near-total resection (NTR) defined as greater than or equal to 95% of contrast enhancing (CE) tumorremoved plus less than or equal to 1 cm3 residual CE tumor. Patients withsubtotal resection will still be eligible if at least 70% of the CE tumor isresected.

  6. Eligibility will be confirmed after surgery when diagnosis of GBM IDH-wtconfirmed prior to randomization.

  7. Patients with prior biopsy or subtotal resection are eligible if no otheranti-cancer treatment received for glioblastoma and additional resectionindicated.

  8. Ability to receive filgrastim (e.g. Neupogen), leukapheresis and 3 bi-weeklyinjections of DOC1021 near deep cervical lymph nodes + weekly pIFN x 6 weeks.

  9. Females of reproductive potential must have a negative serum pregnancy test andagree to use effective contraception (as determined appropriate for the patient bythe investigator) during study treatment.

  10. Adequate kidney, liver, bone marrow function, and immune function, as follows:

  11. Hemoglobin ≥ 8.0 gm/dL (use of transfusion or other intervention to achieve isacceptable)

  12. Absolute neutrophil count (ANC) ≥ 1,500 cells/mm3

  13. Platelet count ≥ 75,000/mm3

  14. Calculated creatinine clearance (CrCl) > 30 mL/min using Cockcroft and Gaultformula: i. For males = (140 - age[years]) x (body weight [kg]) / (72 x serum creatinine [mg/dL]) ii. For females = 0.85 x value from male formula e. Total bilirubin ≤ 1.5times upper limit of normal (ULN) except in patients with Gilbert's disease forwhich total bilirubin must be ≤ 2 times ULN f. Aspartate transaminase AST (SGOT) andalanine aminotransferase ALT (SGPT) ≤ 3 times the ULN

  15. Karnofsky Performance Score ≥ 70

Exclusion

Exclusion Criteria:

  1. Multifocal, deep midline, infratentorial, recurrent, leptomeningeal or extracranialdisease.

  2. Patients who are pregnant or breastfeeding.

  3. Known active HIV or hepatitis infection. Patients with HIV that is well-controlledand have undetectable viral titers remain eligible. Patients with history of HCVadequately treated such that RNA viral load is negative also remain eligible.

  4. Any severe or uncontrolled medical condition or other condition that could affectparticipation in this study as determined by the investigator, including but notlimited to uncontrolled or severe cardiac disease, systemic autoimmune disordersrequiring immunosuppression in the past 2 years, autoimmune hyper/hypothyroidism,untreated vi-ral hepatitis, autoimmune hepatitis.

  5. Treatment with another investigational drug or other experimental interventionwithin the last 30 days.

Study Design

Total Participants: 135
Treatment Group(s): 4
Primary Treatment: DOC1021
Phase: 2
Study Start date:
March 17, 2025
Estimated Completion Date:
March 31, 2032

Connect with a study center

  • City of Hope

    Duarte, California 91010
    United States

    Active - Recruiting

  • Atlantic Health

    Summit, New Jersey 07901
    United States

    Active - Recruiting

Not the study for you?

Let us help you find the best match. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.