New vaccine aims to reverse HPV-Linked cervical changes without surgery
NCT ID NCT07454915
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This phase 2 trial tests a DNA vaccine called PVX4 in 138 women with HPV16-related high-grade cervical dysplasia (CIN2/3). The vaccine is given as a shot with a small electrical pulse to help it enter cells. The goal is to see if it can clear the virus and make abnormal cervical tissue return to normal within 6 months, potentially avoiding the need for surgery.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- PVX4 (pBI-4 DNA vaccine delivered via electroporation)
- What this could lead to
- If successful, this could offer a non-surgical treatment to clear HPV16 and reverse early cervical changes, potentially preventing cervical cancer.
- What could go wrong
- This is a mid-stage trial with only 138 participants. The vaccine may not work better than placebo, and long-term effects are unknown.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 138 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2026
- Expected to finish
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Jun 2028
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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18 to 60 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: 1. Female subjects 18-60 years old with biopsy-confirmed high grade cervical intraepithelial neoplasia (CIN2/3) confirmed by central review. 2. Patients whose cytobrush samples are HPV16+ by Roche Cobas genotyping test. Co-infections with HPV types other than HPV16 are permissible for study entry 3. HIV negative 4. Patients who are able and willing to comply with all study procedures, and with anticipated availability for the planned follow-up period of one year 5. Patients who are of childbearing potential agree to remain sexually abstinent, use methods of contraception (e.g. oral contraception, barrier methods, spermicide, intrauterine device (IUD)), or have a partner who is sterile (i.e., vasectomy) through 6 months. 6. Patients must have adequate organ function at the time of enrollment as defined by the following parameters: white blood cell count \>3,000/mcL; lymphocyte number \>500/mcL; absolute neutrophil count \>1,000/mcL; platelets \>90,000/mcL; hemoglobin \>9 g/dL; total bilirubin \<3 X the institutional limit of normal; aspartate aminotransferase (AST \[SGOT\]) / alanine aminotransferase (ALT \[SGPT\]) \<3 X the institutional limit of normal; creatinine \<2.5X the institutional limit of normal. Exclusion Criteria: 1. Patients who are attempting pregnancy within 6 months, pregnant, or breastfeeding. 2. Patients with immunodeficiency, or treatment with immunosuppressive medications 3. Administration of any blood product within 3 months of enrollment. 4. Administration of any licensed vaccine within 2 weeks of enrollment (4 weeks for a live vaccine) 5. Participation in a study with an investigational compound or device within 30 days of signing informed consent. 6. History of seizures (unless seizure free for 5 years) 7. Previous cancer history within the past 5 years, except localized skin cancer. 8. Patients who have had chemotherapy, radiation, biological cancer therapy, or other investigational agents within 28 days prior to the first dose of study drug. 9. Patients who have had surgery within 28 days, excluding minor procedures (dental work, skin biopsy, etc). 10. 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 with study requirements. 11. Patients who have an active autoimmune disease (e.g., rheumatoid arthritis, systemic lupus erythematosus (SLE), ulcerative colitis, Crohn's Disease, multiple sclerosis (MS), ankylosing spondylitis). 12. Previous cervical conization or LEEP procedure or previous total hysterectomy due to cervical lesions at enrollment 13. High-grade intraepithelial lesions (CIN2/3) encompassing more than 180-degree (more than 2 quarters) of cervix 14. Positive HBV PCR if Hepatitis B surface antigen positive 15. Positive HCV PCR if anti-HCV positive 16. Border of high-grade intraepithelial lesions (CIN2/3) could not be completely observed by colposcope and positive for high grade disease by endocervical curettage. 17. Cervical biopsy and/or ECC of adenocarcinoma in situ (AIS) 18. Pre-biopsy Pap of Atypical Glandular Cells (AGC)/AGC favor neoplasm, squamous cell carcinoma (SCC), or cervical biopsy of CIN2/3 with postmenopausal bleeding 19. Participant has: 1. Less than 2 acceptable potential injection sites for IM injection and electroporation considering the left and right medial deltoid, and anterolateral quadriceps muscles. A site for injection and electroporation is not acceptable if there is inadequate muscle mass to support at least a 19 mm/0.75 inch injection depth or a skinfold thickness measurement of ≥50 mm as assessed using the provided caliper. Eligible injection sites must also be free from tattoos, hypertrophic skin patches, keloids or other skin conditions which could interfere with the administration procedure or subsequent assessment of local reactogenicity. 2. Note: To ensure adequate muscle mass for administrations, for participants with a weight ≤65 kg, potentially eligible administration sites are confined to the outer aspect of the upper thigh (left or right vastus lateralis muscle) (i.e., the left and right medial deltoid are not eligible administration sites). 20. Contraindication to intramsucular injections and blood draws. 21. A metal implant or implantable device within the area of the electroporation injection site at \> 2 of the eligible injection sites. 22. A nonremovable electronic stimulation device, such as cardiac demand pacemakers, automatic implantable cardiac defibrillator, nerve stimulators, or deep brain stimulators. 23. Participant is an employee of the investigator or study site, with direct involvement in the proposed study or other studies under the direction of that investigator or study site, as well as family members of the employees or the investigator. 24. Vulnerable participants (e.g., incarcerated individuals, individuals under a legal protection measure).
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Conditions
The condition(s) this trial relates to.
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
10 sites in 2 countries. 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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China Medical University Hospital
NOT_YET_RECRUITINGTaichung, Taiwan, 40447, Taiwan
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Kaohsiung Chang Gung Memorial Hospital
NOT_YET_RECRUITINGKaohsiung, Taiwan, 83301, Taiwan
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Linkou Chang Gung Memorial Hospital
RECRUITINGTaoyuan, Taiwan, 33305, Taiwan
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MacKay Memorial Hospital
NOT_YET_RECRUITINGTaipei, Taiwan, 10449, Taiwan
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Montefiore Medical Center
NOT_YET_RECRUITINGThe Bronx, New York, 10467, United States
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National Cheng Kung University Hospital
NOT_YET_RECRUITINGTainan, Taiwan, 70403, Taiwan
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National Taiwan University Hospital
NOT_YET_RECRUITINGTaipei, Taiwan, 100225, Taiwan
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Taichung Veterans General Hospital
NOT_YET_RECRUITINGTaichung, Taiwan, 40705, Taiwan
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Taipei Medical University Hospital
NOT_YET_RECRUITINGTaipei, Taiwan, 11031, Taiwan
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Taipei Veterans General Hospital
NOT_YET_RECRUITINGTaipei, Taiwan, 11217, Taiwan
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