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NSABP Clinical Trials Overview


Protocol B-34
A Clinical Trial Comparing Adjuvant Clodronate Therapy vs. Placebo in Early-Stage Breast Cancer Patients Receiving Systemic Chemotherapy and/or Tamoxifen or No Therapy

Specific Aims
The primary aim of this phase III trial is to determine whether clodronate administered for 3 years either alone or in addition to adjuvant chemotherapy and/or hormonal therapy, in patients with early-stage breast cancer will improve disease-free survival. Secondary aims include determining whether clodronate will reduce the incidence of skeletal metastases, improve overall survival, improve relapse-free survival, reduce the incidence of non-skeletal metastases, and reduce the incidence of skeletal morbidity (skeletal fractures, hypercalcemia, skeletal pain, need for radiation therapy, spinal cord compression). Also to investigate the relevance of serum markers of bone turnover as a prognostic factor for the development of bone metastasis.