Clinical trial Recruiting at 1 site Phase 1 Interventional Ages 18 and up

Using Lopinavir/Ritonavir for High-Grade Anal Neoplasia in HIV-Positive Patients

Official title: A Phase I Study of Intra-anally Administered Lopinavir/Ritonavir in People Living With HIV (PLWH) With High-Grade Anal Intraepithelial Neoplasia (AIN 2/3)

Run by University of Wisconsin, Madison · NCT05334004 · Data updated 2026-11-12

This study is testing if a medication called lopinavir/ritonavir, given as a suppository, is safe and effective for people with HIV who have a serious condition called high-grade anal neoplasia.

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment21 (estimated)
SponsorUniversity of Wisconsin, Madison
Academic / other
Drugs / interventionschemotherapy, radiation
Locations1 site (Madison, Wisconsin)
StatusRecruiting
StartedDecember 19, 2023
Main results expectedJune 2027
Study endsJune 2027
Registry record updatedMay 15, 2026
Trial IDNCT05334004 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are HIV-positive individuals aged 18 and older with biopsy-confirmed high-grade anal intraepithelial neoplasia and a CD4 count greater than 200 cells/mm^3.

Probably not a fit

Patients with low-grade anal dysplasia, those with a CD4 count below 200 cells/mm^3, or those currently undergoing systemic chemotherapy or radiation therapy for another cancer may not 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 clinical trial aims to evaluate the safety and tolerability of intra-anal administration of lopinavir/ritonavir in patients living with HIV who have high-grade anal intraepithelial neoplasia (HGAIN). The study will utilize a modified 3 + 3 dose escalation design to identify the maximum tolerated dose (MTD) of the drug, with 30 participants expected to be involved over approximately 3 months, followed by long-term follow-up. Participants will receive the medication via suppository with varying dosing schedules, and secondary outcomes will include measuring the effect on HPV clearance and understanding the mechanism of action of the drug.

Why it matters

Potential benefit: If successful, this study could provide a new treatment option for patients with high-grade anal neoplasia, potentially improving their health outcomes.

How similar studies have gone: While this approach is novel in the context of using lopinavir/ritonavir for this specific condition, similar studies have explored the use of protease inhibitors in other contexts, indicating potential for success.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* willing to provide informed consent
* greater than or equal to 18 years of age
* Diagnosis of biopsy-confirmed HGAIN
* willing to comply with all study procedures

Exclusion Criteria:

* Diagnosis of low-grade anal dysplasia (AIN, low-grade squamous intraepithelial lesion (LSIL)) by HRA.
* CD4 count less than 200 cells/mm\^3 at the time of consideration for entry into the study
* unable to provide informed consent
* Pregnant or breastfeeding female
* Currently receiving systemic chemotherapy or radiation therapy for another cancer.

Where it's running

  • UW Digestive Health Center Anoscopy Clinic
    Madison, Wisconsin, United States
    Recruiting

Study contacts

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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.