Could a common antibiotic boost Chemo's power against breast cancer?
NCT ID NCT06452394
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is for people with early-stage ER+/HER2- breast cancer. It tests whether adding doxycycline, a safe and inexpensive antibiotic, to standard chemotherapy can better target cancer stem cells—cells that may cause the cancer to come back. About 50 participants will receive doxycycline alongside their usual chemo before surgery. The goal is to see if this combination improves the chance of eliminating all cancer cells.
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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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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
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Centre Hospitalier Universitaire Vaudois (CHUV)
RECRUITINGLausanne, CH-1011, Switzerland
Contact Phone: •••-•••-•••• Email: •••••@•••••
Contact
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Clinique de Genolier
RECRUITINGGenolier, Canton of Vaud, 1272, Switzerland
Contact Phone: •••-•••-•••• Email: •••••@•••••
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Kantonsspital Graubünden
RECRUITINGChur, Kanton Graubünden, 7000, Switzerland
Contact Phone: •••-•••-•••• Email: •••••@•••••
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Kantonsspital St.Gallen
RECRUITINGSankt Gallen, Canton of St. Gallen, 9007, Switzerland
Contact Phone: •••-•••-•••• Email: •••••@•••••
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Kantonsspital Winterthur
RECRUITINGWinterthur, Canton of Zurich, 8401, Switzerland
Contact Phone: •••-•••-•••• Email: •••••@•••••
Contact
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Réseau du sein Lausanne
RECRUITINGLausanne, 1004, Switzerland
Contact Phone: •••-•••-•••• Email: •••••@•••••
Contact
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Tumor Zentrum Aarau
RECRUITINGAarau, 5000, Switzerland
Contact Phone: •••-•••-•••• Email: •••••@•••••
Contact
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Tumor- und Brustzentrum Ostschweiz
RECRUITINGSankt Gallen, 9016, Switzerland
Contact
Contact Phone: •••-•••-•••• Email: •••••@•••••