Can a simple blood test predict dangerous side effects in breast cancer treatment?
NCT ID NCT07049133
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is for people with advanced breast cancer who are about to start treatment with the drug T-DXd. The goal is to find markers in the blood that could predict serious side effects, like lung inflammation. By collecting blood samples before and during treatment, researchers hope to make this powerful therapy safer 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
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About 84 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jul 2025
- Expected to finish
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Dec 2027
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
male or female advanced breast cancer patient, either HER2-positive or HER2-low/ultralow, candidate to receive T-DXd as per standard practice
- Ages
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18 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.
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: * Male or female, aged at least 18 years. * Histologically documented invasive breast cancer, either HER2-positive or HER2-low/ultralow. * Candidate to receive T-DXd as per standard practice. * Consent for the provision of blood samples for exploratory analyses. Exclusion Criteria: * Operable, non-metastatic breast cancer * Unwillingness to provide additional blood draws
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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
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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European Institute of Oncolgy
RECRUITINGMilan, 20141, Italy
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a blood test reveal when breast cancer treatment stops working?
- New antibody aims to preserve immune checkpoint while fighting cancer
- Zapping a few growing tumors may keep breast cancer drugs working longer
- Can a Two-Drug combo outsmart resistant breast and ovarian cancers?
- Can a platform trial match the right drug combo to each tumor?
- Can a vaccine teach the immune system to fight HER2-Positive tumors?