ClinicalTrials.gg
Active, not recruitingNCT03491683Updated Oct 22, 2026

INO-5401 and INO-9012 Delivered by Electroporation (EP) in Combination With Cemiplimab (REGN2810) in Newly-Diagnosed Glioblastoma (GBM)

A Phase 1/2 interventional study of INO-5401 and INO-9012 in Glioblastoma, sponsored by Inovio Pharmaceuticals. Active, not recruiting at 21 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-22.

Sponsored by Inovio Pharmaceuticals · Phase 1/2, Interventional, and Treatment

Updated Oct 22, 2026Study documents postedPrimary completion moved+1 moreGo to Updates ↓
Phase
Phase 1/2
Study type
Interventional
Enrollment
52
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 1,300 studies in Glioblastoma with a site in United States — 193 open to participants now, 324 under way, 15 of them phase 3. Glioblastoma · United States.

Enrollment
376th of 1,153
52 · median 33
Started
2018
with 70 others
Phase 1/2
190 of 1,300
32 open now
Primary completion
2027-12
later than 192 of 322 live
Registered
853rd of 1,300
by date

Among the 1,300 studies in Glioblastoma with a site in United States, this one is the 376th largest by enrollment of the 1,153 interventional ones that give a count, is one of 71 that started in 2018, is one of 190 in phase 1/2, reaches primary completion later than 192 of the 322 other live ones, and was the 853rd registered.

Glioblastoma

2,132 studies on the registry are indexed under Glioblastoma; 464 are open to participants now.

Browse Glioblastoma studies →

Open to participants now

193 of the 1,300 studies in Glioblastoma with a site in United States are open now. Recruiting first, the newest first:

188 more — sign in →

All 193 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 339 Glioblastoma studies recruiting now, 234 (69%) set no upper age limit and 65 (19%) stop at 75 or younger; 27 take children under 18; 13 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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02

Study summary

Phase 1/2 trial to evaluate safety, immunogenicity and preliminary efficacy of INO-5401 and INO-9012 in combination with cemiplimab (REGN2810), with radiation and chemotherapy, in subjects with newly-diagnosed glioblastoma (GBM).

Read the detailed description

This is a phase 1/2, open-label, multi-center trial to evaluate safety, immunogenicity and preliminary efficacy of INO-5401 and INO-9012 in combination with cemiplimab in subjects with newly-diagnosed glioblastoma (GBM). INO-5401 and INO-9012 will be delivered by intramuscular (IM) injection followed by electroporation (EP) in combination with cemiplimab and chemoradiation and radiation. There will be 2 cohorts in this trial. Cohort A will be participants with a tumor with an unmethylated O6-methylguanine-deoxyribonucleic acid (DNA) methyltransferase (MGMT) promoter. Cohort B will be participants with a tumor with a MGMT methylated promoter or who have indeterminate MGMT status. Both cohorts will receive INO-5401 and INO-9012 and cemiplimab at the same doses and on the same dosing schedule, and both cohorts will receive radiation and temozolomide (TMZ), if clinically indicated.

03

Conditions studied

  • Glioblastoma

Browse trials for

Keywords

  • Glioblastoma
  • immunotherapy
  • DNA therapy
  • checkpoint inhibitor
04

Who can participate

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

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Newly-diagnosed brain cancer with histopathological diagnosis of GBM;
  • Performance Status (KPS) rating of >/=70 at baseline;
  • Receive dexamethasone equivalent dose \</=2 mg per day, stable or decreased for >/= three days prior to Day 0;
  • Recovery from the effects of prior GBM surgery as defined by the Investigator;
  • (ECG) with no findings as assessed by the Investigator;
  • Adequate organ function as demonstrated by hematological, renal, hepatic laboratory assessments;
  • Agree that during the trial, men will not father a child, and women cannot be or become pregnant. Participants must be of non-child bearing potential or agree to use one highly effective or combined methods that result in a failure rate of \<1% per year during the treatment period and at least through week 12 after last dose;
  • Ability to tolerate magnetic resonance imaging (MRI).

Exclusion criteria

Exclusion Criteria:

  • Presence of greater than 1 cm x 1 cm residual tumor enhancement on postoperative MRI;
  • Multifocal disease or (LM) disease on post-operative MRI;
  • Not scheduled to start radiation within 42 days of surgical resection of tumor;
  • Dexamethasone equivalent dose >2 mg per day;
  • Prior treatment with an agent that blocks the /PD-Ligand 1 pathway;
  • Receipt of previous approved or investigative immune modulatory agent within 28 days of receiving the first dose of treatment;
  • Prior treatment with idelalisib;
  • Past, current or planned treatment with tumor treatment fields; oncolytic viral treatment; or prior exposure to an agent or device within 28 days of receiving the first dose of treatment;
  • Allergy or to cemiplimab or to any of its ;
  • History of documented allergic reactions or acute hypersensitivity reaction attributed to antibody treatments;
  • Ongoing or recent (within 5 years) evidence of disease that required treatment with systemic treatments;
  • Diagnosis of immunodeficiency or treatment with systemic immunosuppressive therapy within 28 days prior to the first dose of trial treatment, other than dexamethasone for the underlying disease under investigation, as noted in the inclusion criteria;
  • History of , medically unstable disease which, in the judgment of the investigator, would jeopardize the safety of the subject, interfere with trial assessments or endpoint evaluation, or otherwise impact the validity of the trial results.
Terms in these criteria, in plain language(11)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Karnofsky performance status (KPS)

A 0–100 scale of how well someone can carry out everyday activities. 100 is no complaints and no signs of illness; 70 is able to look after yourself but not to work or keep up normal activity; 50 is needing considerable help and frequent medical care.

Studies often ask for 60 or 70 and above. Your doctor gives the score.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Leptomeningeal disease

Cancer that has spread to the leptomeninges, the thin layers covering the brain and spinal cord, and the fluid between them. It is not the same as brain metastases.

Criteria often treat it separately, and many studies leave it out even where treated brain metastases are allowed.

PD-1, PD-L1 and checkpoint inhibitors

PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.

PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
52 participants (actual)

Study arms

  • Experimental
    Cohort A: Unmethylated MGMT Promoter

    Cohort A will include participants with a glioblastoma tumor with an unmethylated MGMT promoter. Participants will receive INO-5401 and INO-9012 and cemiplimab as well as radiation and temozolomide (TMZ; only during radiation therapy), if clinically indicated.

    Biological: INO-5401 · Biological: INO-9012 · Biological: Cemiplimab · Radiation: Radiation Therapy · Drug: Temozolomide

  • Experimental
    Cohort B: Methylated MGMT Promoter

    Cohort B will include participants with a glioblastoma tumor with a methylated MGMT promoter or with indeterminate MGMT status. Participants will receive INO-5401 and INO-9012 and cemiplimab as well as radiation and temozolomide (TMZ), if clinically indicated. Participants will continue to receive TMZ following radiation therapy, for up to six additional cycles, if clinically indicated.

    Biological: INO-5401 · Biological: INO-9012 · Biological: Cemiplimab · Radiation: Radiation Therapy · Drug: Temozolomide

Interventions

  • BiologicalINO-5401

    INO-5401 is a combination of 3 separate DNA plasmids targeting Wilms tumor gene-1 (WT1) antigen, prostate-specific membrane antigen (PSMA) and human telomerase reverse transcriptase (hTERT) genes. Starting on Day 0 three milligrams (mg) of each plasmid will be delivered IM followed by EP using the CELLECTRA® 2000 EP device every three weeks for four doses, and then every 9 weeks until disease progression as defined by immunotherapy Response Assessment in Neuro-Oncology (iRANO), unacceptable toxicity, withdrawal of consent, or death.

  • BiologicalINO-9012

    INO-9012 is a DNA plasmid for expression of human interleukin-12 (IL-12). Starting on Day 0 one mg plasmid will be delivered IM followed by EP using the CELLECTRA® 2000 EP device every three weeks for four doses, and then every 9 weeks until disease progression as defined by iRANO, unacceptable toxicity, withdrawal of consent, or death.

  • BiologicalCemiplimab

    Cemiplimab is an antibody to programmed death-1 (PD-1) protein. Starting on Day 0 cemiplimab will be administered intravenously (IV) every three weeks at a dose of 350 mg per dose in the absence of dose holding, until disease progression as defined by iRANO, unacceptable toxicity, withdrawal of consent, or death.

    Also known as: REGN2810

  • RadiationRadiation Therapy

    Radiation therapy (RT) will begin no later than 42 days after surgical intervention, and should start approximately 2 weeks after Day 0. RT will be given for three weeks.

  • Temozolomide (TMZ) will be given daily during radiation therapy (RT) at a dose of 75 milligrams per square meter (mg/m\^2).

06

What researchers measure

Primary outcomes

  1. Percentage of Participants with Adverse Events (AEs)

    Time frame: From Day 0 to 30 days after the last dose of study treatment (non-serious AEs) and to 6 months after the last dose of study treatment (immune-related AEs, AEs of special interest and serious AEs) up to approximately 24 months

Secondary outcomes

  1. Overall survival at 18 months (OS18)

    Time frame: At Month 18

  2. Change from Baseline in Interferon-gamma Secreting T Lymphocytes in Peripheral Blood Mononuclear Cells (PBMCs)

    Time frame: From Day 0 to last dose of study treatment up to approximately 18 months

  3. Change from Baseline in T-Cell Phenotypes in PBMCs

    Time frame: From Day 0 to last dose of study treatment up to approximately 18 months

  4. Change from Baseline in T Cell Receptor (TCR) Subtypes in PBMCs

    Time frame: From Day 0 to last dose of study treatment up to approximately 18 months

  5. Change from Baseline in Antigen-Specific Humoral Response

    Time frame: From Day 0 to last dose of study treatment up to approximately 18 months

07

Study locations

21 sites
08

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedDate before it movedWhere the date was before it movedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started May 2018 (actual). Primary completion is estimated for Dec 2027, 115 months after the start.

Of 53 industry-sponsored phase 1/2 interventional studies under Glioblastoma, half reached primary completion within 55 months of starting (the median), counting those still running; a quarter within 39 and three quarters within 75. This study's planned 115 months is above that.

Counting every sponsor, half of 137 studies reached it within 66 months; a quarter within 45 and three quarters within 100.

Since we started tracking on Sep 25, 2026, the dates moved once, on Oct 22, 2026: primary completion Dec 2026 → Dec 2027 and completion Dec 2026 → Dec 2027.

Earlier changes are on the record history on ClinicalTrials.gov ↗

How these figures are worked out, and which studies are left out of them.

Registered
Apr 2, 2018
First posted
Apr 9, 2018
StartActual
May 31, 2018
Primary completionEst.
Dec 31, 2027was Dec 2026
CompletionEst.
Dec 31, 2027was Dec 2026
Last update
Oct 22, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Primary completion
Dec 31, 2026→Dec 31, 2027
Oct 22, 2026
Study completion
Dec 31, 2026→Dec 31, 2027
Oct 22, 2026
Documents
Oct 22, 2026
Show all 1 update
  1. Oct 22, 2026
    Documents Study protocol ↗ posted
    Primary completion Dec 31, 2026→Dec 31, 2027
    Study completion Dec 31, 2026→Dec 31, 2027
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT03491683
Responsible party
Sponsor
First posted
Apr 9, 2018
Start date
May 31, 2018
Primary completion
Dec 31, 2027 (estimated)
Completion
Dec 31, 2027 (estimated)
Last update
Oct 22, 2026

Study contacts

Jeffrey Skolnik, MD
study director · Inovio Pharmaceuticals

Oversight

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

Not currently enrolling

This study is active, not recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drugs tested here: WT1/PSMA/hTERT-encoding Plasmid DNA INO-5401 · Rocakinogene sifuplasmid

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