Heart shield? diabetes drug tested to prevent chemo heart damage
NCT ID NCT07245069
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This study tests whether dapagliflozin, a drug used for diabetes and heart failure, can prevent heart damage caused by a common type of chemotherapy (anthracyclines) in breast cancer patients. One hundred women will receive either dapagliflozin or a placebo daily during their chemotherapy. Researchers will monitor heart function and blood markers to see if the drug offers protection.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- dapagliflozin
- What this could lead to
- If it works, this could point toward a way to protect the heart during breast cancer chemotherapy, reducing the risk of long-term heart problems.
- What could go wrong
- This is a small, early-stage (Phase 2) study, so results may not be definitive. Dapagliflozin may not prevent heart damage, and it can have side effects like dehydration or urinary infections.
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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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- 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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Feb 2025
- Expected to finish
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Feb 2029
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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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: * Adults ≥18 years. * Histologically confirmed breast cancer with planned (neo)adjuvant anthracycline-based chemotherapy (4 cycles of epirubicin + cyclophosphamide or doxorubicin + cyclophosphamide). * Eligible to start dapagliflozin or placebo prior to or at initiation of chemotherapy. * Able to perform baseline echocardiography, vascular ultrasound (FMD and carotid stiffness), 6-minute walk test, and biomarker sampling. * Willing and able to provide written informed consent. Exclusion Criteria: * Known heart failure (any prior diagnosis of HF). * Clinically significant valvular heart disease. * Prior exposure to chemotherapy or radiotherapy to the left chest. * Type 1 diabetes mellitus. * Symptomatic hypotension. * History of recurrent urinary tract infections. * History of diabetic ketoacidosis or ketonemia. * Severe hepatic impairment (ALT, AST, ALP \>3× upper limit of normal). * Severe renal impairment (eGFR \<20 mL/min/1.73 m²). * Known allergy or intolerance to SGLT-2 inhibitors. * Any use of SGLT-2 inhibitor therapy within 3 months prior to enrollment. * Pregnancy or breastfeeding. * Any condition that, in the investigator's judgment, could interfere with study participation, safety, or completion.
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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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University Medical Centre Ljubljana
RECRUITINGLjubljana, 1000, Slovenia
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- Which SGLT2 inhibitor wins? trial pits empagliflozin against dapagliflozin