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Tiny study eyes safety of TALZENNA in tough prostate cancer

NCT ID NCT06733337

Disease control Sponsor: Pfizer Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study tracks the safety of the drug TALZENNA in one man with a specific type of advanced prostate cancer that has a BRCA gene mutation and no longer responds to hormone therapy. The participant takes TALZENNA as prescribed and is monitored for side effects for up to a year. Because it involves only one person and focuses on safety, it cannot tell us whether the drug works well.

What this could mean

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

Active substance
TALZENNA (talazoparib)
What this could lead to
If successful, this study could confirm that TALZENNA is safe enough to use more widely for this type of prostate cancer.
What could go wrong
This is a very small study (only 1 person) focused on safety, not effectiveness. It cannot prove the drug works or is safe for everyone.

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.

Participants

1 person

The number who actually took part.

Started

Jul 2025

Expected to finish

Jun 2029

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.

Who is studied

Patients who satisfy the inclusion criteria

Ages

0 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: * Patients with BRCA mutation-positive metastatic castration-resistant prostate cancer * No history of previous use of this drug Exclusion Criteria: * None

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Conditions

The condition(s) this trial relates to.

castration-resistant prostate carcinoma metastatic prostate carcinoma prostate cancer

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Prostate cancer

Contacts and locations

Locations

  • Pfizer Japan

    Tokyo, Japan

More trials for these conditions

Other studies related to the condition(s) this trial covers.