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New drug STM-416p tested during prostate surgery in small safety trial

NCT ID NCT06450106

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This early-phase trial tests a drug called STM-416p that is given directly during surgery to remove the prostate in men with prostate cancer. The study involves 18 men and focuses on safety and finding the right dose. It is not yet testing whether the drug works better than standard care.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
STM-416p (a drug given during surgery)
What this could lead to
If it works, this could point toward a new way to treat prostate cancer during surgery, potentially reducing the chance of cancer coming back.
What could go wrong
This is a very early Phase 1 trial with only 18 people, so the main goal is safety, not effectiveness. It may not work or could have side effects.

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

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 18 people

The number the study aims to enrol. It can still change while the study runs.

Started

May 2025

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Male participants only

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Males aged 18 years or older at time of informed consent. 2. Have a histologically confirmed diagnosis of prostate cancer, and are scheduled to undergo radical prostatectomy within 28 days of screening. 3. Grade Group 2-5. 4. Eastern Cooperative Oncology Group (ECOG) Performance Status ≤2 at Screening. 5. Have adequate organ and bone marrow function at screening. 6. Able to understand and be willing to sign an Institutional Review Board/Ethics Committee-approved written informed consent document Exclusion Criteria: 1. Have an invasive malignancy, other than the disease under study. 2. Anticipated to require the use of a drain after radical prostatectomy. 3. Received any other anticancer therapy (e.g., including but not limited to chemotherapy, biologic therapy, immunotherapy, targeted therapy, endocrine therapy, radiation therapy, intravesical therapy ) within 28 days. 4. History of allergic reactions attributed to compounds of similar chemical or biologic composition as those used in the STM-416p formulation including poloxamer 407 and sodium hyaluronate. 5. History of allogeneic organ transplant. 6. History of primary immunodeficiency. 7. QTc interval \>470 msec at Screening.

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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.

  1. The places running it

    4 sites in 2 countries. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Arizona Urology Specialists

    RECRUITING

    Tucson, Arizona, 85715, United States

  • Australian Prostate Center

    RECRUITING

    Melbourne N., Victoria, 3051, Australia

  • Epworth HealthCare

    RECRUITING

    Melbourne N., Victoria, 3051, Australia

  • University of Florida

    RECRUITING

    Gainesville, Florida, 32608, United States

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