ClinicalTrials.gg
Active, not recruitingNCT02772003Updated Sep 11, 2026

DNA Vaccine Therapy in Treating Patients With Chronic Hepatitis C Virus Infection

A Phase 1 interventional study of Electroporation-Mediated Plasmid DNA Vaccine Therapy and HCV DNA Vaccine INO-8000 in Chronic Hepatitis, Hepatitis C Infection and Hepatocellular Carcinoma, sponsored by National Cancer Institute (NCI). Active, not recruiting at 5 sites in 2 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-11.

Sponsored by National Cancer Institute (NCI) · Phase 1, Interventional, and Prevention

Phase
Phase 1
Study type
Interventional
Enrollment
33
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

This phase I trial studies the side effects and best dose of deoxyribonucleic acid (DNA) vaccine therapy in treating patients with hepatitis C virus (HCV) infection that persists or progresses over a long period of time. Vaccines made from DNA may help the body build an effective immune response to kill cancer cells that express HCV infection.

Read the detailed description

PRIMARY OBJECTIVES:

I. To determine the safety profile of the HCV DNA vaccine, consisting of INO-8000 (HCV antigen DNA) alone or co-administered with INO-9012 (interleukin [IL]-12 adjuvant DNA) (DNA plasmid encoding interleukin-12 INO-9012).

II. To identify a dose of INO-9012 (IL-12 adjuvant DNA) for co-administration with INO-8000 (HCV antigen DNA) based on induction of HCV-specific interferon (IFN)-gamma production by peripheral blood mononuclear cells at 26 weeks compared to baseline in HCV-infected participants.

TRANSLATIONAL OBJECTIVES:

I. Determine the rate at which INO-8000 with different doses of INO-9012 induces a > 1 log decrease (or undetectable) in HCV ribonucleic acid (RNA) level at weeks 14 and 26.

II. Determine the rate at which INO-8000 with different doses of INO-9012 induces an end-of-treatment undetectable HCV RNA (end-of-treatment virologic response - EVR) at 26 weeks and a sustained virologic response (SVR) at 36 weeks.

III. Determine the rate at which INO-8000 with different doses of INO-9012 induces other parameters of cluster of differentiation (CD)8 and CD4 T lymphocyte responses as measured by flow cytometry, and antibody responses to HCV antigen at weeks 14 and 26.

OUTLINE: This is a dose-escalation study of INO-9012.

Patients receive INO-8000 intramuscularly (IM) and DNA plasmid encoding interleukin-12 INO-9012 IM (dose levels 2-4) followed by electroporation (EP) at day 0 and at weeks 4, 12, and 24.

After completion of study treatment, patients are followed up at weeks 48 and 76.

02

Conditions studied

  • Chronic Hepatitis
  • Hepatitis C Infection
  • Hepatocellular Carcinoma
03

In context

Hepatitis, Chronic

83 studies on the registry are indexed under Hepatitis, Chronic; 10 are open to participants now.

This study's enrollment of 33 is below the median of 84 across 59 interventional studies indexed under Hepatitis, Chronic.

Browse Hepatitis, Chronic studies →

Lead sponsor

National Cancer Institute (NCI) is the lead sponsor of 3,556 studies on the registry; 336 are open to participants now.

Of its 411 completed or terminated interventional studies of FDA-regulated products, 373 (91%) 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

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

  • PRE-REGISTRATION INCLUSION CRITERIA
  • Presence of active, chronic infection confirmed by positive HCV RNA
  • Willingness to use adequate to avoid pregnancy or impregnation for the duration of study participation; Note:

    • The effects of INO-8000 with or without INO-9012 on the developing human fetus at the recommended therapeutic dose are unknown; for this reason, women of and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation
    • For men and women who are not (i.e., >= 12 months of non-therapy-induced amenorrhea, confirmed by follicle stimulating hormone [FSH], if not on hormone replacement) or surgically sterile (vasectomy in males or absence of ovaries and/or uterus in females), agreement to remain abstinent or use highly effective or combined contraceptive methods that result in a failure rate of \< 1% per year during the treatment period and at least through week 12 after last dose
    • Abstinence is only acceptable if it is in line with the preferred and usual lifestyle of the subject; periodic abstinence (e.g., calendar, ovulation, symptothermal, or post-ovulation methods) and withdrawal are not acceptable methods of contraception
    • Examples of contraceptive methods with an expected failure rate of \< 1% per year include male sterilization and hormonal implants; alternatively, proper use of combined oral or injected hormonal contraceptives and certain intrauterine devices or two methods (e.g., two barrier methods such as a condom and a cervical cap) may be combined to achieve a failure rate of \< 1% per year (barrier methods must always be supplemented with the use of a spermicide)
    • Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her study physician immediately
    • Should a female partner of a male study participant become pregnant while the male participant is on study, the male participant should inform his study physician immediately
  • Willingness to avoid excessive use of alcohol during the study; note: excessive use is defined as drinking >= 8 alcoholic drinks per week on average
  • Willingness to provide blood samples for research tests specified in the protocol
  • Ability to understand and willingness to sign a written document
  • REGISTRATION INCLUSION CRITERIA
  • Serum or plasma HCV RNA level >= 10,000 IU/mL
  • Screening HCV genotype, demonstrating genotype 1
  • Alpha feto protein (AFP) levels within normal institutional limits or judged to be not by the investigator; Exception: If deemed clinically significant, then liver imaging must be available within previous 6 months (e.g., ultrasound, computed tomography [CT] scan, magnetic resonance imaging [MRI]) showing no evidence of hepatocellular carcinoma
  • (ECOG) performance status (PS) 0 or 1
  • Screening laboratory values (serum chemistry, hematology, [PT](international normalized ratio [INR])/activated partial thromboplastin time [APTT], and creatine phosphokinase [CPK]) obtained up to 45 days prior to administration of first vaccine injection on day 0 within institutional normal range or judged to be not clinically significant by principal investigator (PI) and medical monitor
  • 12-lead (ECG) showing normal heart rhythm; note: if there are abnormalities, then the abnormalities must be deemed of no clinical significance

Exclusion criteria

Exclusion Criteria:

  • PRE-REGISTRATION EXCLUSION CRITERIA
  • Failure of previous therapies
  • (HIV) infection
  • Any previous treatment for HCV =\< 6 months prior to registration
  • Other uncontrolled immune-compromising illness
  • disorders, transplant recipients, other including any concurrent condition requiring the use of immunosuppressive/ immunomodulating agents; Exception: eye drop-containing and infrequent inhaled are permissible; topical corticosteroids are permissible at locations other than the administration site (upper arm); Note: All systemic corticosteroids must be discontinued at least 4 weeks prior to randomization; inhaled corticosteroids must be discontinued >= 48 hours prior to randomization and courses of more than 2 weeks are not permissible within 4 weeks of randomization
  • Ongoing virus (HBV) infection
  • Documented evidence of fibrosis or cirrhosis (Metavir 2, 3, and 4) and subjects with significant extrahepatic manifestations of hepatitis C (such as cryoglobulinemia with symptoms or evidence of end-organ manifestations, renal disease, type 2 diabetes, or porphyria cutanea tarda
  • Other known causes of significant liver disease including chronic or acute hepatitis B, acute hepatitis A, hemochromatosis, or homozygote alpha-1 antitrypsin deficiency
  • Active ; exception: non-melanoma skin cancers cancer(s) for which diagnosis and treatment was completed >= 3 years prior to pre-registration
  • History of major organ transplantation with an existing functional graft
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
  • History of cardiac arrhythmia, controlled or uncontrolled, including ventricular and supraventricular arrhythmia
  • Pregnant or nursing women; Note: Pregnant women are excluded from this study because INO-8000 has 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 this DNA vaccine, breastfeeding should be discontinued if the mother is treated with INO-8000
  • Current diagnosis or history of cardiac pre-excitation syndromes (e.g. Wolff-Parkinson-White)
  • Metal implants on same limb as intended administration site
  • Tattoos, scars, active lesions, or rashes =\< 2 cm of the intended site of study treatment
  • Documentation of history of seizure within previous 5 years
  • Pacemaker or other implanted device
  • Any condition that, in the clinical judgement of the investigator, would place a participant at unreasonably increased risk
  • REGISTRATION EXCLUSION CRITERIA
  • Receiving any other agents =\< 6 months prior to Registration
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to INO-8000 and INO-9012
Terms in these criteria, in plain language(16)

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.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

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.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

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.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

INR, PT and aPTT (clotting tests)

Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.

Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.

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.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

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.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

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.

05

Study design

Phase
Phase 1
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Masking
Single (Outcomes assessor)
Enrollment
33 participants (actual)

Study arms

  • Experimental
    Treatment (INO-8000, INO-9012, EP)

    Patients receive INO-8000 IM and DNA plasmid encoding interleukin-12 INO-9012 IM (dose levels 2-4) followed by EP at day 0 and at weeks 4, 12, and 24.

    Biological: Electroporation-Mediated Plasmid DNA Vaccine Therapy · Biological: HCV DNA Vaccine INO-8000 · Other: Laboratory Biomarker Analysis · Other: Quality-of-Life Assessment · Biological: Rocakinogene Sifuplasmid

Interventions

  • BiologicalElectroporation-Mediated Plasmid DNA Vaccine Therapy

    Undergo electroporation

  • BiologicalHCV DNA Vaccine INO-8000

    Given IM

    Also known as: INO-8000

  • OtherLaboratory Biomarker Analysis

    Correlative studies

  • OtherQuality-of-Life Assessment

    Ancillary studies

    Also known as: Quality of Life Assessment

  • Given IM

    Also known as: DNA Plasmid Encoding Interleukin-12 INO-9012, INO-9012

06

What researchers measure

Primary outcomes

  1. Incidence of dose-limiting toxicity

    Will be defined as an adverse event occurring after the initial vaccine administration, based on the National Cancer Institute Common Terminology Criteria for Adverse Events version 4.0. The percentage of participants who experience grade 3 or worse adverse events and administration-site reactions following each dose will be summarized using descriptive statistics across each dose level.

    Time frame: Baseline to 26 weeks

  2. Mean change of interferon-gamma production by peripheral blood mononuclear cells

    Change in production of interferon-gamma by peripheral blood mononuclear cells will be based on a one-way analysis of variance model using data from all dose levels at the 2-sided 5% level. Mean change (and % change) and the associated 95% confidence intervals in the production of IFN-gamma by peripheral blood mononuclear cells for all evaluable participants enrolled at each dose level will be computed, and compared across the dose levels in an exploratory fashion using graphical approaches, one-way analysis of variance models etc. to ascertain a dose-response curve.

    Time frame: Baseline to 26 weeks

Other outcomes

  1. Percentage of participants with > 1 log decrease (or undetectable) in hepatitis C virus ribonucleic acid level

    The point estimate (and the associated 95% confidence intervals) for primary immune response endpoint will be estimated within each arm and formally compared using a chi-squared test (or Fisher's exact test, if the data warrant). A logistic regression analysis will also be utilized to adjust for potential baseline covariates considered critical for this population.

    Time frame: Up to 26 weeks

  2. Percentage of participants with end-of-treatment undetectable hepatitis C virus ribonucleic acid for the dose levels determined to be safe

    The immune response comparisons will be made using descriptive statistics and graphical methods for both phases of the study. Descriptive statistics and simple scatter plots will be generated to review the continuous immune response data. For continuous immune response values, the actual and % change in the level of each of the biomarkers from baseline to post-baseline time points will be explored within each dose level/arm using Wilcoxon signed rank tests, and paired sample t-tests.

    Time frame: 26 weeks

  3. Sustained virologic response defined as undetectable hepatitis C virus ribonucleic acid

    The immune response comparisons will be made using descriptive statistics and graphical methods for both phases of the study. Descriptive statistics and simple scatter plots will be generated to review the continuous immune response data. For continuous immune response values, the actual and % change in the level of each of the biomarkers from baseline to post-baseline time points will be explored within each dose level/arm using Wilcoxon signed rank tests, and paired sample t-tests.

    Time frame: 36 weeks

  4. CD8 and CD4 T lymphocyte responses as measured by flow cytometry, and antibody responses, to hepatitis C virus antigen for the dose levels determined to be safe

    The immune response comparisons will be made using descriptive statistics and graphical methods for both phases of the study. Descriptive statistics and simple scatter plots will be generated to review the continuous immune response data. For continuous immune response values, the actual and % change in the level of each of the biomarkers from baseline to post-baseline time points will be explored within each dose level/arm using Wilcoxon signed rank tests, and paired sample t-tests.

    Time frame: Up to 26 weeks

07

Study locations

5 sites
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 11, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02772003
Responsible party
Sponsor
First posted
May 13, 2016
Start date
Jun 6, 2016
Primary completion
Mar 4, 2020
Completion
Mar 9, 2027 (estimated)
Last update
Sep 11, 2026

Study contacts

Jeffrey M Jacobson
principal investigator · Mayo Clinic

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

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

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Studies of the drug tested here: Rocakinogene sifuplasmid

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