Spots Global Cancer Trial Database for Prolonged Tamoxifen Compared With Shorter Tamoxifen in Treating Patients Who Have Breast Cancer

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Trial Identification

Brief Title: Prolonged Tamoxifen Compared With Shorter Tamoxifen in Treating Patients Who Have Breast Cancer

Official Title: Reliable Assessment of the Efficacy and Safety of Prolonging the Use of Adjuvant Tamoxifen: A Large, Simple, Randomised Study

Study ID: NCT00003016

Conditions

Breast Cancer

Interventions

tamoxifen citrate

adjuvant therapy

Study Description

Brief Summary: RATIONALE: Estrogen can stimulate the growth of breast cancer cells. Hormone therapy using tamoxifen may fight breast cancer by reducing the production of estrogen. It is not yet known if prolonged tamoxifen is more effective than shorter tamoxifen therapy following curative treatment for breast cancer. PURPOSE: This randomized phase III trial is studying giving tamoxifen over a prolonged period of time to see how well it works compared to giving tamoxifen over a shorter period of time in treating patients who have had a breast tumor removed.

Detailed Description: OBJECTIVES: * Assess the balance of risks and benefits in prolonging the duration of adjuvant tamoxifen by at least 5 years in patients with curatively treated breast cancer who have already had about 5 years of adjuvant tamoxifen. OUTLINE: This is a randomized study. After about 5 years of adjuvant tamoxifen, recurrence-free patients are randomized to stop tamoxifen treatment immediately or to continue tamoxifen treatment for at least 5 more years. Patients are followed annually. PROJECTED ACCRUAL: Approximately 20,000 patients will be accrued for this study.