Hidden heart risk: routine cancer scans could reveal cardiovascular danger in breast cancer survivors
NCT ID NCT07703033
First seen Jul 14, 2026 · Last updated Jul 15, 2026 · Updated 1 time
Summary
This study tests whether measuring calcium buildup in heart arteries from routine radiotherapy planning CT scans can identify breast cancer patients at risk for heart disease. Researchers will share this personalized risk information with patients and their doctors to see if it influences treatment decisions and patient satisfaction. The goal is to improve long-term heart health in breast cancer survivors without extra scans or radiation.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- measuring coronary artery calcifications (Agatston score) using routine radiotherapy planning CT scans and communicating the associated risk of cardiovascular disease to the patient
- What this could lead to
- If successful, this approach could help identify breast cancer patients at high risk for heart disease earlier, leading to better preventive care and improved long-term health.
- What could go wrong
- This is a decision-impact study, not a treatment trial. It measures whether sharing risk information changes care, but it may not directly improve health outcomes. Some patients may experience anxiety from learning their heart risk.
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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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 1,000 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2026
- Expected to finish
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May 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.
- Ages
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35 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: * diagnosed with breast cancer or ductal carcinoma in situ * Planned for radiotherapy * From 35 years of age onwards Exclusion Criteria: * Pregnancy * Breastfeeding
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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
5 sites in 4 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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Amsterdam University Medical Center
NOT_YET_RECRUITINGAmsterdam, Netherlands
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Champalimaud Foundation
NOT_YET_RECRUITINGLisbon, Portugal
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LMU University Hospital
NOT_YET_RECRUITINGMünchen, Germany
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RegionH
NOT_YET_RECRUITINGCopenhagen, Denmark
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St. Antonius Hospital
RECRUITINGUtrecht, Netherlands
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