Could tailoring tamoxifen doses keep more breast cancer patients on treatment?
NCT ID NCT07502820
First seen Apr 04, 2026 · Last updated Apr 28, 2026 · Updated 3 times
Summary
This phase 3 trial tests whether giving personalized doses of tamoxifen (based on how each person processes the drug) helps more women with hormone-sensitive breast cancer stay on treatment and have better outcomes. Currently, 30-50% of patients stop tamoxifen early due to side effects or lack of effectiveness. The study will enroll 1100 premenopausal or perimenopausal women in Sweden and compare personalized dosing to the standard fixed dose of 20 mg daily.
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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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Study contacts
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Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Capio S:t Görans Sjukhus
Stockholm, 112 81, Sweden
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S:a Älvsborgs Sjukhus
Borås, 501 82, Sweden
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Skaraborgs Sjukhus
Skövde, 549 49, Sweden
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Södersjukhuset, Onkologiska kliniken
Stockholm, 118 61, Sweden
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