To align with industry best practices for security and data integrity, Project Data Sphere is requiring users to upgrade their browsers to one that supports encryption protocol TLS 1.2 by December 15, 2017. On that date, Project Data Sphere will disable support of browsers that permit SSL 3.0/TLS 1.0. To prevent any disruption to your access to Project Data Sphere, you must take action. This browser was not recognized and may not be compatible with TLS 1.2 or higher. Please check with the browser's developer to confirm. To view information about this, please visit the FAQ. If you have any further questions, please contact us.
A Clinical Trial to Determine the Efficacy of Five Years of Letrozole Compared to Placebo in Patients Completing Five Years of Hormonal Therapy Consisting of an Aromatase Inhibitor (AI) or Tamoxifen Followed by an AI in Prolonging Disease-Free Survival in Postmenopausal Women With Hormone Receptor Positive Breast Cancer
Provider Data DescriptionThere are two data submissions (NCT00382070-D1 and NCT00382070-D2) for PMID 30509771, the primary publication for NCT00382070 (NSABP-B-42). This dataset, NCT00382070-D1, contains baseline characteristic, survival, disease recurrence, and serious adverse event data.
SponsorNSABP Foundation Inc
Data ProviderNational Cancer Institute
Clinical Trials.gov Information
Brief SummaryRATIONALE: Estrogen can cause the growth of breast cancer cells. Hormone therapy using letrozole may fight breast cancer by lowering the amount of estrogen the body makes. It is not yet known whether letrozole is more effective than a placebo in treating patients with hormone receptor-positive breast cancer.
PURPOSE: This randomized phase III trial is studying letrozole to see how well it works compared with a placebo in treating postmenopausal women who have received hormone therapy for hormone receptor-positive breast cancer.