New drug STM-416p tested during prostate surgery in small safety trial
NCT ID NCT06450106
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
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 18 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2025
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Male 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. 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.
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The places running it
4 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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Arizona Urology Specialists
RECRUITINGTucson, Arizona, 85715, United States
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Australian Prostate Center
RECRUITINGMelbourne N., Victoria, 3051, Australia
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Epworth HealthCare
RECRUITINGMelbourne N., Victoria, 3051, Australia
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University of Florida
RECRUITINGGainesville, Florida, 32608, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Radioactive missile aims at prostate cancer that spread
- New PET tracer targets ACP3 to spot prostate cancer
- Can a One-Week radiation course match four weeks for prostate cancer?
- Can a new PET tracer spot hidden prostate cancer spread?
- Can a gel cushion shield the rectum during prostate radiation?
- A scanner in the operating room could show surgeons exactly where prostate cancer remains