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Clinical Trials/NCT06536374
NCT06536374
Not yet recruiting
Phase 2

A Phase II, Open Label, Randomized Controlled Pilot Study Evaluating Trimethoprim in Patients Commencing Androgen Deprivation Therapy for Prostate Cancer

University of California, San Diego1 site in 1 country50 target enrollmentJune 1, 2026

Overview

Phase
Phase 2
Intervention
Trimethoprim Tablets
Conditions
Prostate Cancer
Sponsor
University of California, San Diego
Enrollment
50
Locations
1
Primary Endpoint
Safety of Trimethoprim
Status
Not yet recruiting
Last Updated
5 months ago

Overview

Brief Summary

The researchers hope to learn if Trimethoprim, 150mg taken daily for 3 months, is a safe and effective way to reduce folate levels at time of Androgen Deprivation Therapy (ADT) in men with advanced prostate cancer.

This study will help find out what effects, good and/or bad, this drug has on people who take it and on its effect on the disease. The safety of this drug in humans has been tested in prior research studies; however, some side effects may not yet be known.

Detailed Description

While taking part in this study, participants will be asked to attend approximately 4 to 7 visits - depending on what randomized arm they are in - with the researchers or study staff. It may be necessary for participants to return to the hospital/clinic every 1-3 months as part of their regular care. Research procedures will be completed at the same time as these routine standard of care visits. Participants will be asked to stop taking any supplements or medications containing folic acid or potassium prior to enrolling in the study.

Registry
clinicaltrials.gov
Start Date
June 1, 2026
End Date
December 1, 2027
Last Updated
5 months ago
Study Type
Interventional
Study Design
Parallel
Sex
Male

Investigators

Responsible Party
Principal Investigator
Principal Investigator

Michael Liss

Associate Professor

University of California, San Diego

Eligibility Criteria

Inclusion Criteria

  • Not provided

Exclusion Criteria

  • Not provided

Arms & Interventions

Trimethoprim plus androgen deprivation therapy

Administration of trimethoprim to reduce folic acid levels at the time of standard of care androgen deprivation therapy.

Intervention: Trimethoprim Tablets

Outcomes

Primary Outcomes

Safety of Trimethoprim

Time Frame: From first dose of study therapy through 1 month after completion of study therapy.

Proportion of participants with adverse events and serious adverse events as graded by National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE).

Study Sites (1)

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