Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 18 to 65 Women only

Dysplasix™ intravaginal suppositories for women with high‑risk HPV and mild cervical cell changes

Official title: A Phase II, Randomized, Double-blind, Placebo-Controlled, Proof of Concept Study to Assess the Safety and Efficacy of Dysplasix™ Intravaginally-Administered Suppositories in Patients With High-Risk Human Papillomavirus (Hr-HPV) as Determined by HPV Testing, and Accompanied by Either (1) Atypical Squamous Cells of Undetermined Significance (ASC-US) or (2) Low-Grade Squamous Intraepithelial Lesions (LSIL), as Determined by Cytology

Run by Amplexd Therapeutics, Inc. · NCT07572396 · Data updated 2026-11-12

This trial tests whether nightly Dysplasix™ vaginal suppositories can clear high‑risk HPV and help mild cervical cell changes (ASC‑US or LSIL) in adult women.

More HPV Infection trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years to 65 Years
SexWomen only
Enrollment45 (estimated)
SponsorAmplexd Therapeutics, Inc.
Industry-sponsored
Locations1 site (Shatin, New Territories)
StatusRecruiting
StartedApril 30, 2026
Main results expectedDecember 27, 2026
Study endsJanuary 27, 2027
Registry record updatedMay 14, 2026
Trial IDNCT07572396 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Women aged 18–65 who are immune‑competent, test positive for high‑risk HPV, have ASC‑US or LSIL cytology, can self‑administer vaginal suppositories, and can attend follow‑up visits are the intended participants.

Probably not a fit

Patients with high‑grade cervical lesions (HSIL), glandular abnormalities, immune compromise, or those unable to use contraception or attend clinic visits are unlikely to benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase II, double‑blind, randomized, placebo‑controlled study enrolls women with high‑risk HPV and cytology showing ASC‑US or LSIL. Enrolled participants self‑administer an intravaginal suppository nightly across a fifteen‑day course (three 5‑day cycles with two days off) and are randomized 1:1 to Dysplasix™ (EGCG + quinine sulfate) or matching placebo. Primary outcomes include regression of cervical cytologic abnormalities and clearance of hr‑HPV measured about 30 days after treatment, while safety and tolerability are tracked with participant diaries and clinic visits. Key exclusions include the presence of high‑grade lesions or glandular abnormalities, and participants must be able to attend clinic visits at the enrolling center.

Why it matters

Potential benefit: If successful, this treatment could clear hr‑HPV and reverse low‑grade cervical lesions, potentially reducing the need for invasive follow‑up procedures.

How similar studies have gone: Topical EGCG preparations have shown some promising results in small studies for HPV‑related lesions, but intravaginal EGCG combined with quinine sulfate is a novel approach that has not been widely tested in randomized trials.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

Participants must meet all the following criteria to be eligible to enroll in the study:

1. Participants capable of giving informed consent
2. Females, ages 18 to 65 years old at the time of signature of the informed consent form.
3. Participants who are able to correctly self-administer the intravaginal suppositories
4. One or more hr-HPV oncotypes as confirmed by HPV test
5. Participants with ASCUS or LSIL abnormalities as confirmed by cytology
6. Immune competent
7. Participants of childbearing potential must have a negative pregnancy test at screening.
8. Participants of childbearing potential must agree to use appropriate contraception or abstain from sexual intercourse for the duration of the study
9. Participants must not have received a recent HPV vaccination and must abstain from HPV vaccination until the end of study

Exclusion Criteria:

Participants meeting any of the following criteria will be excluded from the study:

1. Presence of HSIL at screening cytology
2. Evidence of glandular abnormalities (AGC/AIS) at screening cytology
3. BMI below 16
4. Pregnant or nursing females
5. Evidence of vaginal/vulval comorbidities, specifically, common sexually transmitted or vaginal infections, and bloodborne pathogens
6. Using a vaginal contraceptive ring
7. History of irregular menstrual cycles or routine intermenstrual bleeding
8. Active autoimmune disease
9. Taking prohibited concomitant medications
10. Concurrent malignancy except for non-melanoma skin lesions
11. Active participation in another clinical trial involving therapeutic intervention (unless ending within 30 days of screening date)

Where it's running

  • Prince of Wales Hospital
    Shatin, New Territories, Hong Kong
    Recruiting

Study contacts

  • Principal investigator: Kar Kei Yung, MBBS (HK), MRCOG, FHKCOG, FHKA — Prince of Wales Hospital, Chinese University of Hong Kong
  • Study coordinator: Trial Manager
  • Email: p2trialhk@amplexd.com
  • Phone: 713-933-9640

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.