DNA vaccine aims to clear HPV16 and reverse early cervical changes

NCT ID NCT07809997

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

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Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Sep 09, 2026 · Last updated Sep 15, 2026 · Updated 3 times

Summary

Researchers are testing a therapeutic DNA vaccine called pBI-4 in women with HPV16-positive grade 1 cervical intraepithelial neoplasia or persistent HPV16 infection. The vaccine is designed to train the immune system to target HPV16 proteins. Participants receive either the vaccine or a placebo, given into the thigh muscle with a device that uses mild electrical pulses to help cells take up the vaccine. The trial measures whether the vaccine clears HPV16 and helps early cervical lesions regress over six months, with safety checks for a year.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
an experimental therapeutic DNA vaccine called pBI-4, given with a device that uses mild electrical pulses to help cells take it up
What this could lead to
If it works, this could offer a way to clear HPV16 and reverse early cervical changes without surgery, lowering the risk of cervical cancer.
What could go wrong
The vaccine may not trigger a strong enough immune response to clear the virus, and electroporation can cause discomfort at the injection site. This is a mid-stage trial, so results may not hold in larger groups.

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Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

About 94 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Mar 2030

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

19 to 65 years

Sex

Female participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patients with CIN1 on biopsy and whose cytologic sample is HPV16+ by Roche Cobas test in the past 30 days, OR patients with CIN\<1 on biopsy whose cytologic sample is HPV16+ by Roche Cobas test in the past 30 days and a history of a second HPV16+ test at least 6 months prior * (Co-infections with HPV types other than HPV16 are permissible for study entry) * Age ≥ 19 years * Baseline Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 at the time of study treatment administration * Adequate organ function at the time of enrollment as defined by: White blood cell count \> 3,000/mcL Absolute lymphocyte number \> 500/mcL Absolute neutrophil count \> 1,000/mcL Platelets \> 90,000/mcL Hemoglobin \> 9 g/dL Total bilirubin \< 3 x institutional limit of normal AST(SGOT)/ALT(SGPT) \< 3 x institutional limit of normal Creatinine \< 2.5 x institutional limit of normal Women of child-bearing potential must agree to use effective contraception (hormonal and/or barrier) prior to study entry and for the duration of the study * Ability to understand and willingness to sign a written informed consent document * Subject is able to adhere to the study visit schedule and other protocol requirements Exclusion Criteria: * Patients with AIS (adenocarcinoma in situ) or cancer determined by cervical cytology at study entry * Histologic evidence of CIN2 or above * Patients with a diagnosis of immunosuppression or prolonged, active use of immunosuppressive medications such as steroids * Prior treatment with any HPV therapeutic agent (e.g., Imiquimod, Veregen, Podophylotoxin) * Patients who are receiving any other investigational agents or blood products within 30 days prior to the first dose * Patients with an 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 * Patients with a history of autoimmune disease such as multiple sclerosis (exclusive of a history of thyroiditis, psoriasis, Sjogren's, or inflammatory bowel disease) * Patients with a history of allergic reactions attributed to compounds used in agent preparation * Patients who are pregnant or breast feeding * Patients with active or chronic infection of HIV, HCV, or HBV * Patients who have had a prior LEEP or cervical conization procedure * History of prior malignancy (permitted only if the patient has been disease-free for ≥ 5 years, or has completely resected basal cell or squamous cell carcinoma of the skin) * Less than 1 acceptable potential injection site for intramuscular injection and electroporation (considering the left/right medial deltoid, and anterolateral quadriceps muscles) * A site is unacceptable if there is inadequate muscle mass to support at least a 19 mm (0.75 inch) injection depth or a skinfold thickness of ≥ 50 mm * (Note: For participants weighing ≤ 65 kg, acceptable sites are confined to the outer aspect of the upper thigh, and the deltoids are not eligible) * Contraindication to intramuscular injections and blood draws * A metal implant or implantable device within the area of the electroporation injection site at \> 2 of the eligible injection sites .A nonremovable electronic stimulation device (such as cardiac demand pacemakers, automatic implantable cardiac defibrillators, nerve stimulators, or deep brain stimulators).

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As listed by the trial registrant

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How to take part

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  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

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Contacts and locations

Locations

  • Kaohsiung Chang Gung Memorial Hospital

    Kaohsiung City, Kaohsiung, 833, Taiwan

  • Linkou Chang Gung Memorial Hospital

    Taoyuan, Taoyuan, 333, Taiwan

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