Bicalutamide for the Treatment of Androgen Receptor Positive (AR(+)), Estrogen Receptor Negative, Progesterone Receptor Negative (ER(-)/PR(-)) Metastatic Breast Cancer Patients: A Phase II Feasibility Study
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 28
- 试验地点
- 8
- 主要终点
- 6-month Response Rate (Complete Response, Partial Response, and Stable Disease)
研究概览
简要总结
RATIONALE: Androgens can cause the growth of breast cancer cells. Antihormone therapy, such as bicalutamide, may stop the adrenal glands from making androgens.
PURPOSE: This phase II trial is studying how well bicalutamide works in treating patients with metastatic breast cancer.
详细描述
OBJECTIVES:
Primary
- Determine the 6-month efficacy rate of bicalutamide as first-, second-, or third-line therapy in patients with androgen receptor-positive and estrogen receptor- and progesterone receptor-negative metastatic breast cancer.
Secondary
- Determine the 6-month progression-free survival of patients treated with this drug.
- Evaluate the safety of this drug in these patients.
- Evaluate changes in estradiol, total and free testosterone, and sex-hormone binding globulin in response to androgen blockade in patients treated with this drug.
- Evaluate tissue, including cytokeratins 5/6 and 17, SPDEF, ALCAM, ERBB2, FGFR4, and prostate-specific antigen (PSA), using immunohistochemical analysis in patients treated with this drug.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 120 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- 未提供
排除标准
- 未提供
研究组 & 干预措施
bicalutamide
This is a multicenter, open-label, phase II study to evaluate the antitumor activity and safety of bicalutamide administered orally daily to patients with ER(-)/PR(-)/AR(+) metastatic breast cancer. Eligible patients who have consented to trial participation will receive bicalutamide at a dose of 150mg PO daily.
干预措施: bicalutamide (Drug)
bicalutamide
This is a multicenter, open-label, phase II study to evaluate the antitumor activity and safety of bicalutamide administered orally daily to patients with ER(-)/PR(-)/AR(+) metastatic breast cancer. Eligible patients who have consented to trial participation will receive bicalutamide at a dose of 150mg PO daily.
干预措施: diagnostic laboratory biomarker analysis (Other)
bicalutamide
This is a multicenter, open-label, phase II study to evaluate the antitumor activity and safety of bicalutamide administered orally daily to patients with ER(-)/PR(-)/AR(+) metastatic breast cancer. Eligible patients who have consented to trial participation will receive bicalutamide at a dose of 150mg PO daily.
干预措施: immunohistochemistry staining method (Other)
结局指标
主要结局
6-month Response Rate (Complete Response, Partial Response, and Stable Disease)
时间窗: 6 months
Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.
次要结局
- Count of Participants With Progression-free Survival(1 year)
- Number of Participants Evaluated for Toxicity(1 year)