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Study identifier: NCT06671912 Synced from ClinicalTrials.gov · August 05, 2026
● Suspended

Testing Low Dose Tamoxifen for Invasive Breast Cancer, LoTam Trial

Condition: Anatomic Stage 0 Breast Cancer AJCC v8 · Anatomic Stage 1 Breast Cancer AJCC v8 · Anatomic Stage IIA Breast Cancer AJCC v8  ·  Sponsor: Alliance for Clinical Trials in Oncology

PhasePhase 3
Planned participants1556
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This phase III trial compares the effect of low dose tamoxifen to usual hormonal therapy, including aromatase inhibitors, in treating post-menopausal women with hormone positive, HER2 negative early stage breast cancer. Tamoxifen is in a class of medications known as antiestrogens. It blocks the activity of estrogen (a female hormone) in the breast. This may stop the growth of some breast tumors that need estrogen to grow. Aromatase inhibitors, such as anastrozole, letrozole, and exemestane, prevent the formation of estradiol, a female hormone, by interfering with an aromatase enzyme. Aromatase inhibitors are used as a type of hormone therapy to treat postmenopausal women with hormone-dependent breast cancer. Giving low dose tamoxifen may be more effective compared to usual hormone therapy in treating post-menopausal women with hormone-positive, HER2 negative early stage breast cancer.

This description comes directly from the study's public registry record.

Talk to the study team

No contact information is available for this study as per the public registry record.

Always discuss trial participation with your own doctor first.

Locations (732)

Katmai Oncology GroupAnchorage, Alaska, United States
Arizona Center for Cancer Care - GilbertGilbert, Arizona, United States
CTCA at Western Regional Medical CenterGoodyear, Arizona, United States
Arizona Center for Cancer Care-PeoriaPeoria, Arizona, United States
Arizona Center for Cancer Care - BiltmorePhoenix, Arizona, United States
Arizona Center for Cancer Care - PhoenixPhoenix, Arizona, United States
Mayo Clinic Hospital in ArizonaPhoenix, Arizona, United States
Arizona Center for Cancer Care - OsbornScottsdale, Arizona, United States
Arizona Center for Cancer Care - ScottsdaleScottsdale, Arizona, United States
Arizona Center for Cancer Care-SurpriseSurprise, Arizona, United States
Arizona Center for Cancer CareTempe, Arizona, United States
Mercy Hospital Fort SmithFort Smith, Arkansas, United States

+ 720 more locations — full list on the registry record.

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