New study aims to predict dangerous side effects of common breast cancer drugs
NCT ID NCT07100054
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at 100 breast cancer patients taking CDK4/6 inhibitor drugs. Researchers want to find genetic and blood markers that can predict who will have bad side effects or not get enough benefit from the medication. The goal is to help doctors choose safer and more effective treatments for each patient.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2025
- Expected to finish
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Sep 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
This observational cohort will consist of female adult cancer patients routinely seen at the London Regional Cancer Program for breast cancer chemotherapy. Patients must be starting or currently on the CDK4/6 inhibitors abemaciclib, ribociclib and palbociclib for the treatment of breast cancer.
- Ages
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18 years and older
- Sex
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Female 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: * female * breast cancer diagnosis * over 18 years of age * indication for a CDK4/6 inhibitor treatment * proficient in English 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.
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
1 site. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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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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London Health Sciences Centre Research Institute
London, Ontario, Canada
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Other studies related to the condition(s) this trial covers.
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