DNA vaccine aims to clear HPV16 and reverse early cervical changes
NCT ID NCT07809997
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
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Phase 1/2
Runs two stages together: safety and dose first, then whether the treatment works.
- Participants
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About 94 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2026
An estimate. Start dates often move.
- Expected to finish
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Mar 2030
An estimate. End dates often move.
- Lead sponsor
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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
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19 to 65 years
- Sex
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Female participants only
- Healthy volunteers
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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 Hide 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
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
2 sites. The list below names each one and where it is.
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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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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Kaohsiung Chang Gung Memorial Hospital
Kaohsiung City, Kaohsiung, 833, Taiwan
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Linkou Chang Gung Memorial Hospital
Taoyuan, Taoyuan, 333, Taiwan
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