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SuspendedNCT06169280Updated Jun 30, 2026

Repeated Neural Stem Cell Based Virotherapy for Newly Diagnosed High Grade Glioma

A Phase 1 interventional study of NSC-CRAd-S-pk7 in Glioma, Malignant and New Diagnosis Tumor, sponsored by Northwestern University. Suspended at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-30.

Sponsored by Northwestern University · Phase 1, Interventional, and Treatment

Why this study was suspended
Safety issues
Phase
Phase 1
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this clinical trial is to learn about the safety and feasibility of administering repeated doses of neural stem cell (NSC)-conditionally replicative adenovirus (CRAd)-survivin (S)-protomer (p)k7, in persons with newly diagnosed high grade glioma.

The main questions it aims to answer are:

  • whether multiple doses of NSC-CRAd-S-pk7 are safe and feasible
  • how multiple doses of NSC-CRAd-S-pk7 influence tumor response, overall survival, time to tumor progression, and quality of life.

Participants will:

  • undergo a biopsy to confirm high grade glioma, then receive the first dose of NSC-CRAd-S-pk7 into the brain
  • about 2 weeks later, undergo surgery to remove the tumor and receive the second dose of NSC-CRAd-S-pk7 into the brain
  • start chemoradiation about 2 weeks after surgery, then about 2 weeks later, receive the 3rd dose of NSC-CRAd-S-pk7 into the brain
  • four weeks later, at the end of chemoradiation, receive a fourth dose of NSC-CRAd-S-pk7 into the brain.
  • after radiation is finished, receive standard of care chemotherapy and tumor-treating fields. Two additional doses of NSC-CRAd-S-pk7 will be given every 4 weeks.
Read the detailed description

The treatment regimen contains 3 phases:

Surgical phase:

Patients undergo a biopsy and upon intraoperative confirmation of high grade glioma, NSC-CRAd-S-pk7 dose #1 will be injected into the biopsy site. Patients will undergo resection of the tumor 14 (+/- 3) days later, administration of second dose of the investigational product (NSC-CRAd-S-pk7 dose #2), and implantation of the catheter system. The investigational product will then be given monthly for a total of 6 doses (see below).

Radiotherapy phase:

After recovery from surgery (usually within 2 weeks), standard chemoradiotherapy will be initiated consisting of daily radiotherapy (2 Gy per fraction x 30 fractions) and concomitant temozolomide (TMZ) chemotherapy (75 mg/m2 daily from day 1 of RT until last day of RT).

About 10-14 days into radiotherapy (= approx. 4 weeks after intraoperative dose #2), patients will be receiving NSC-CRAd-S-pk7 dose #3 through the previously implanted catheter system. This also marks the beginning of the formal dose-limiting toxicity (DLT) period, as this virus' survivin gene promoter is activated by the concomitant irradiation.

Four weeks later, ie. at the end of radiotherapy dose #4 is administered as previously, provided no DLT toxicity has been observed and viral treatment related toxicities have returned to grade ≤ 2.

Adjuvant (also called maintenance) phase:

As per standard of care, approx. 4 weeks after end of radiotherapy, patients will start maintenance TMZ chemotherapy (150 - 200 mg/m2, daily x 5 every 28 days) and loco-regional treatment with alternating Tumor Treating Fields (TTFields, Optune®). NSC-CRAd-S-pk7 doses #5 and #6 will be administered concurrently (± 3 days) with adjuvant cycle 1 and 2 of TMZ.

02

Conditions studied

  • Glioma, Malignant
  • New Diagnosis Tumor

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Keywords

  • Virotherapy
  • NSC-CRAd-S-pk7
03

In context

Glioma

1,397 studies on the registry are indexed under Glioma; 351 are open to participants now.

This study's planned enrollment of 20 is below the median of 32 across 1,065 interventional studies indexed under Glioma.

Browse Glioma studies →

Lead sponsor

Northwestern University is the lead sponsor of 1,396 studies on the registry; 199 are open to participants now.

Of its 102 completed or terminated interventional studies of FDA-regulated products, 73 (72%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Diagnosis of a high-grade glioma (WHO grade 3 or grade 4).
  • Patients must have presumed high grade glioma (WHO grade 3 or 4) based on clinical and radiologic evaluation for registration.
  • A pathologic confirmation of high grade glioma must be made at the time of stereotactic biopsy prior to NSC-CRAd-S-pk7 injection; if this is not possible, the injection will not be performed and the subject will no longer be eligible for the study).
  • Tumor must be accessible for injection and must not be located in the brainstem or contained within the ventricular system.
  • Planning to undergo standard radiation/chemotherapy.
  • 18 years of age or older.
  • Performance status (PS) must be WHO PS of \< 2.
  • Stable or decreasing dose of corticosteroids equivalent to ≤ 6 mg/day for the 5 days prior to inclusion
  • Serum glutamic-oxaloacetic transaminase (SGOT or AST) \< 3x upper limit of normal
  • Serum creatinine \< 2mg/dl
  • Platelets > 100,000/mm3 and white blood cells (WBCs) > 3000/mm3

Exclusion criteria

Exclusion Criteria:

  • Prior or ongoing liver disease including known cirrhosis.
  • Known hepatitis B or C infection, known HIV infection.
  • Chronic use of immunosuppressive drugs (with exception of corticosteroids required for mass effect).
  • Acute viral, bacterial or fungal infections requiring therapy.
  • Pregnant or breast-feeding patients.
  • Evidence of metastatic disease or other malignancy (except squamous or basal cell skin cancers).
  • Prior radiation therapy to the brain or prior treatment for brain tumor.
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Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (estimated)

Study arms

  • Experimental
    NSC-CRAd-S-pk7

    NSC-CRAd-S-pk7 1·50 x 10⁸ NSCs loaded with1·875 x viral particles administered intra-tumorally on Day 0 and Day 15, then every 4 weeks for up to 6 total doses.

    Biological: NSC-CRAd-S-pk7

Interventions

  • BiologicalNSC-CRAd-S-pk7

    NSC-CRAd-S-pk7 1·50 x 10⁸ NSCs loaded with1·875 x viral particles administered intra-tumorally on Day 0 and Day 15, then every 4 weeks for up to 6 total doses.

06

What researchers measure

Primary outcomes

  1. Dose-limiting toxicity of repeat NSC-CRAd-S-pk7 dosing

    Determination of the dose limiting toxicity of repeated dosing of NSC-CRAd-S-pk7

    Time frame: 8 weeks

Secondary outcomes

  1. Objective response to therapy

    Objective response to therapy as determined by Immune Response Assessment in Neuro-Oncology (iRANO) criteria

    Time frame: 5 years

  2. Overall survival

    Overall survival time from the first study product injection to death

    Time frame: 5 years

  3. Progression-free survival

    Time from the first study product injection to first confirmed disease progression as determined by objective tumor response

    Time frame: 18 months

Other outcomes

  1. Functional Assessment of Cancer Therapy-Brain (FACT-Br) score change

    Change in score on FACT-Br over time as a measure of quality of life, with scores ranging from 0-200; higher scores indicate better quality of life.

    Time frame: 22 weeks

07

Study locations

1 site
  • Northwestern University
    Chicago, Illinois 60611, United States
08

References and documents

Publications

  • Ahmed AU, Thaci B, Tobias AL, Auffinger B, Zhang L, Cheng Y, Kim CK, Yunis C, Han Y, Alexiades NG, Fan X, Aboody KS, Lesniak MS. A preclinical evaluation of neural stem cell-based cell carrier for targeted antiglioma oncolytic virotherapy. J Natl Cancer Inst. 2013 Jul 3;105(13):968-77. doi: 10.1093/jnci/djt141. PubMed 23821758 ↗
  • Ahmed AU, Thaci B, Alexiades NG, Han Y, Qian S, Liu F, Balyasnikova IV, Ulasov IY, Aboody KS, Lesniak MS. Neural stem cell-based cell carriers enhance therapeutic efficacy of an oncolytic adenovirus in an orthotopic mouse model of human glioblastoma. Mol Ther. 2011 Sep;19(9):1714-26. doi: 10.1038/mt.2011.100. Epub 2011 May 31. PubMed 21629227 ↗
  • Fares J, Ahmed AU, Ulasov IV, Sonabend AM, Miska J, Lee-Chang C, Balyasnikova IV, Chandler JP, Portnow J, Tate MC, Kumthekar P, Lukas RV, Grimm SA, Adams AK, Hebert CD, Strong TV, Amidei C, Arrieta VA, Zannikou M, Horbinski C, Zhang H, Burdett KB, Curiel DT, Sachdev S, Aboody KS, Stupp R, Lesniak MS. Neural stem cell delivery of an oncolytic adenovirus in newly diagnosed malignant glioma: a first-in-human, phase 1, dose-escalation trial. Lancet Oncol. 2021 Aug;22(8):1103-1114. doi: 10.1016/S1470-2045(21)00245-X. Epub 2021 Jun 29. PubMed 34214495 ↗
  • Kim CK, Ahmed AU, Auffinger B, Ulasov IV, Tobias AL, Moon KS, Lesniak MS. N-acetylcysteine amide augments the therapeutic effect of neural stem cell-based antiglioma oncolytic virotherapy. Mol Ther. 2013 Nov;21(11):2063-73. doi: 10.1038/mt.2013.179. Epub 2013 Jul 25. PubMed 23883863 ↗
  • Stupp R, Mason WP, van den Bent MJ, Weller M, Fisher B, Taphoorn MJ, Belanger K, Brandes AA, Marosi C, Bogdahn U, Curschmann J, Janzer RC, Ludwin SK, Gorlia T, Allgeier A, Lacombe D, Cairncross JG, Eisenhauer E, Mirimanoff RO; European Organisation for Research and Treatment of Cancer Brain Tumor and Radiotherapy Groups; National Cancer Institute of Canada Clinical Trials Group. Radiotherapy plus concomitant and adjuvant temozolomide for glioblastoma. N Engl J Med. 2005 Mar 10;352(10):987-96. doi: 10.1056/NEJMoa043330. PubMed 15758009 ↗

Individual participant data

Plan to share: No — No individual participant data (IPD) will be shared with other researchers.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 30, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06169280
Lead sponsor
Northwestern University
Responsible party
Sponsor
First posted
Dec 13, 2023
Start date
Jun 27, 2025
Primary completion
Dec 31, 2029 (estimated)
Completion
Dec 31, 2030 (estimated)
Last update
Jun 30, 2026

Study contacts

Roger Stupp, MD
principal investigator · Northwestern University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is suspended, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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