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First received: August 30, 2022

Clinical Trial: Tamoxifen Prediction Study in Patients With ER+ Breast Cancer

Study Status: Completed

Recruit Status: RECRUITING

Condition: ER+ Breast Cancer

Study Type: INTERVENTIONAL


Official Title: Predicting an Accurate Tamoxifen Dose: a Feasibility Study in Patients With Hormone Sensitive Breast Cancer

Brief Summary: Adjuvant treatment with tamoxifen is the standard of care for women with estrogen receptor positive (ER+) breast cancer.Tamoxifen is converted to endoxifen, its active metabolite, via CYP2D6 enzymes.The literature states that an endoxifen concentration of at least 16 nmol/L is needed to produce a therapeutic effect (4).Therapeutic Drug Monitoring (TDM) has been proven to be a successful technique to reach the 16 nmol/L endoxifen threshold after 6 months.However, in general TDM can only be used when a…

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