New drug TALZENNA tested for Tough-to-Treat breast cancer
NCT ID NCT06735742
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at the safety of the drug TALZENNA in people with a specific type of breast cancer (BRCA mutation-positive, HER2-negative) that cannot be surgically removed or has come back after previous chemotherapy. Only 3 participants who have not used TALZENNA before will receive the drug as prescribed and be followed for up to 12 months. The main goal is to track any side effects, especially those affecting the bone marrow, lungs, blood vessels, or causing new tumors.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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3 people
The number who actually took part.
- Started
-
Apr 2025
- Expected to finish
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Mar 2029
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.
Who is studied
Patients who satisfy the inclusion criteria
- Ages
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0 years and older
- Sex
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Anyone
- 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.
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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 and HER2- negative unresectable or recurrent breast cancer with a history of cancer chemotherapy * No history of previous use of this drug Exclusion Criteria: * None
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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.
Contacts and locations
Locations
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Pfizer Japan
Tokyo, Japan
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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