At a glance
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Validating CYP2D6 Genotype-Guided Tamoxifen Therapy for a Multiracial U.S. Population
In Brief
A Phase 2 clinical trial evaluating tamoxifen citrate, gene expression analysis, and 3 other interventions for Breast Cancer and Menopausal Symptoms. Completed, enrolled 501 participants across 7 sites.
Detailed Summary
RATIONALE: Studying samples of blood from patients with cancer in the laboratory may help doctors learn more about differences in DNA and predict how well patients will respond to treatment and plan better treatment. PURPOSE: This clinical trial is studying blood samples from women with breast cancer or ductal carcinoma in situ who are receiving tamoxifen.
Study Details
Timeline
Interventions
Women found to be IM or PM will undergo increased tamoxifen to 40 mg/day (20 mg bid). Drug is given orally on a daily basis.
Genetic analysis of blood sample.
Genetic analysis of blood sample.
Questionnaire called the survey of participants. Questionnaires is self administered on paper documents and given pre-study, and at 4 months
Self administration of a multiquestion questionnaire called the Functional Assessment of Cancer Therapy -Breast (FACT-B). Given pre-study, at 4 months and at 8-10 months.