Efficacy and Safety of Two Neoadjuvant Strategies With Bevacizumab in Locally Advanced Resectable Rectal Cancer: A Randomized, Non-Comparative Phase II Study
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 91
- 试验地点
- 20
- 主要终点
- Percentage of Participants With Tumor Sterilization Defined by ypT0-N0
研究概览
简要总结
This study will assess the efficacy and safety of two different neoadjuvant treatment approaches including bevacizumab in newly diagnosed participants with high risk locally advanced rectal cancer. Participants will be randomized into one of two treatment arms (Arm A or Arm B).
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 75 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •histologically confirmed locally advanced rectal cancer;
- •measurable disease;
- •Eastern Cooperative Oncology Group (ECOG) performance status 0-1.
排除标准
- •prior treatment with bevacizumab;
- •prior radiotherapy to pelvic region, or previous cytotoxic chemotherapy;
- •previous history of malignancy (other than basal and squamous cell cancer of the skin, or in situ cancer of the cervix);
- •history or evidence of central nervous system (CNS) disease;
- •clinically significant cardiovascular disease;
- •chronic treatment with high dose aspirin (more than [>] 325 milligrams per day [mg/day]) or non-steroidal anti-inflammatory drugs.
研究组 & 干预措施
Arm A (Bevacizumab, Induction Chemotherapy, Chemoradiotherapy)
In this arm, participants will undergo 3 phases of treatment. During the Phase 1, participants will receive induction chemotherapy with 6 two-week cycles of bevacizumab + Folfox-4 (5-FU + oxaliplatin + folinic acid) for 12 weeks followed by a treatment-free interval of 3 to 4 weeks. The Phase 2 will include 7 weeks of bevacizumab + chemoradiotherapy (intravenous [IV] infusion of bevacizumab alone, 2 weeks before administration of the first cycle of chemoradiotherapy, then 5 one-week cycles of chemoradiotherapy [5-FU + radiotherapy], with administration of bevacizumab every two weeks [Cycles 1, 3 and 5]) followed by a treatment-free interval of 6 to 8 weeks. The Phase 3 will be surgery involving a radical rectal excision using the total mesorectal excision (TME) technique.
干预措施: Bevacizumab (Drug)
Arm A (Bevacizumab, Induction Chemotherapy, Chemoradiotherapy)
In this arm, participants will undergo 3 phases of treatment. During the Phase 1, participants will receive induction chemotherapy with 6 two-week cycles of bevacizumab + Folfox-4 (5-FU + oxaliplatin + folinic acid) for 12 weeks followed by a treatment-free interval of 3 to 4 weeks. The Phase 2 will include 7 weeks of bevacizumab + chemoradiotherapy (intravenous [IV] infusion of bevacizumab alone, 2 weeks before administration of the first cycle of chemoradiotherapy, then 5 one-week cycles of chemoradiotherapy [5-FU + radiotherapy], with administration of bevacizumab every two weeks [Cycles 1, 3 and 5]) followed by a treatment-free interval of 6 to 8 weeks. The Phase 3 will be surgery involving a radical rectal excision using the total mesorectal excision (TME) technique.
干预措施: Oxaliplatin (Drug)
Arm A (Bevacizumab, Induction Chemotherapy, Chemoradiotherapy)
In this arm, participants will undergo 3 phases of treatment. During the Phase 1, participants will receive induction chemotherapy with 6 two-week cycles of bevacizumab + Folfox-4 (5-FU + oxaliplatin + folinic acid) for 12 weeks followed by a treatment-free interval of 3 to 4 weeks. The Phase 2 will include 7 weeks of bevacizumab + chemoradiotherapy (intravenous [IV] infusion of bevacizumab alone, 2 weeks before administration of the first cycle of chemoradiotherapy, then 5 one-week cycles of chemoradiotherapy [5-FU + radiotherapy], with administration of bevacizumab every two weeks [Cycles 1, 3 and 5]) followed by a treatment-free interval of 6 to 8 weeks. The Phase 3 will be surgery involving a radical rectal excision using the total mesorectal excision (TME) technique.
干预措施: Folinic Acid (Drug)
Arm A (Bevacizumab, Induction Chemotherapy, Chemoradiotherapy)
In this arm, participants will undergo 3 phases of treatment. During the Phase 1, participants will receive induction chemotherapy with 6 two-week cycles of bevacizumab + Folfox-4 (5-FU + oxaliplatin + folinic acid) for 12 weeks followed by a treatment-free interval of 3 to 4 weeks. The Phase 2 will include 7 weeks of bevacizumab + chemoradiotherapy (intravenous [IV] infusion of bevacizumab alone, 2 weeks before administration of the first cycle of chemoradiotherapy, then 5 one-week cycles of chemoradiotherapy [5-FU + radiotherapy], with administration of bevacizumab every two weeks [Cycles 1, 3 and 5]) followed by a treatment-free interval of 6 to 8 weeks. The Phase 3 will be surgery involving a radical rectal excision using the total mesorectal excision (TME) technique.
干预措施: 5-fluorouracil (Drug)
Arm A (Bevacizumab, Induction Chemotherapy, Chemoradiotherapy)
In this arm, participants will undergo 3 phases of treatment. During the Phase 1, participants will receive induction chemotherapy with 6 two-week cycles of bevacizumab + Folfox-4 (5-FU + oxaliplatin + folinic acid) for 12 weeks followed by a treatment-free interval of 3 to 4 weeks. The Phase 2 will include 7 weeks of bevacizumab + chemoradiotherapy (intravenous [IV] infusion of bevacizumab alone, 2 weeks before administration of the first cycle of chemoradiotherapy, then 5 one-week cycles of chemoradiotherapy [5-FU + radiotherapy], with administration of bevacizumab every two weeks [Cycles 1, 3 and 5]) followed by a treatment-free interval of 6 to 8 weeks. The Phase 3 will be surgery involving a radical rectal excision using the total mesorectal excision (TME) technique.
干预措施: Preoperative Radiotherapy (Radiation)
Arm A (Bevacizumab, Induction Chemotherapy, Chemoradiotherapy)
In this arm, participants will undergo 3 phases of treatment. During the Phase 1, participants will receive induction chemotherapy with 6 two-week cycles of bevacizumab + Folfox-4 (5-FU + oxaliplatin + folinic acid) for 12 weeks followed by a treatment-free interval of 3 to 4 weeks. The Phase 2 will include 7 weeks of bevacizumab + chemoradiotherapy (intravenous [IV] infusion of bevacizumab alone, 2 weeks before administration of the first cycle of chemoradiotherapy, then 5 one-week cycles of chemoradiotherapy [5-FU + radiotherapy], with administration of bevacizumab every two weeks [Cycles 1, 3 and 5]) followed by a treatment-free interval of 6 to 8 weeks. The Phase 3 will be surgery involving a radical rectal excision using the total mesorectal excision (TME) technique.
干预措施: Surgery (Procedure)
Arm B (Bevacizumab, Chemoradiotherapy)
In this arm, participants will receive the Phase 2 and Phase 3 treatments only. The phase 2 will include 7 weeks of bevacizumab + chemoradiotherapy (IV infusion of bevacizumab alone, 2 weeks before administration of the first cycle of chemoradiotherapy, then 5 one-week cycles of chemoradiotherapy [5-FU + radiotherapy], with administration of bevacizumab every two weeks [Cycles 1, 3 and 5]) followed by a treatment-free interval of 6 to 8 weeks. The phase 3 will be surgery involving a radical rectal excision using the TME technique.
干预措施: Bevacizumab (Drug)
Arm B (Bevacizumab, Chemoradiotherapy)
In this arm, participants will receive the Phase 2 and Phase 3 treatments only. The phase 2 will include 7 weeks of bevacizumab + chemoradiotherapy (IV infusion of bevacizumab alone, 2 weeks before administration of the first cycle of chemoradiotherapy, then 5 one-week cycles of chemoradiotherapy [5-FU + radiotherapy], with administration of bevacizumab every two weeks [Cycles 1, 3 and 5]) followed by a treatment-free interval of 6 to 8 weeks. The phase 3 will be surgery involving a radical rectal excision using the TME technique.
干预措施: 5-fluorouracil (Drug)
Arm B (Bevacizumab, Chemoradiotherapy)
In this arm, participants will receive the Phase 2 and Phase 3 treatments only. The phase 2 will include 7 weeks of bevacizumab + chemoradiotherapy (IV infusion of bevacizumab alone, 2 weeks before administration of the first cycle of chemoradiotherapy, then 5 one-week cycles of chemoradiotherapy [5-FU + radiotherapy], with administration of bevacizumab every two weeks [Cycles 1, 3 and 5]) followed by a treatment-free interval of 6 to 8 weeks. The phase 3 will be surgery involving a radical rectal excision using the TME technique.
干预措施: Preoperative Radiotherapy (Radiation)
Arm B (Bevacizumab, Chemoradiotherapy)
In this arm, participants will receive the Phase 2 and Phase 3 treatments only. The phase 2 will include 7 weeks of bevacizumab + chemoradiotherapy (IV infusion of bevacizumab alone, 2 weeks before administration of the first cycle of chemoradiotherapy, then 5 one-week cycles of chemoradiotherapy [5-FU + radiotherapy], with administration of bevacizumab every two weeks [Cycles 1, 3 and 5]) followed by a treatment-free interval of 6 to 8 weeks. The phase 3 will be surgery involving a radical rectal excision using the TME technique.
干预措施: Surgery (Procedure)
结局指标
主要结局
Percentage of Participants With Tumor Sterilization Defined by ypT0-N0
时间窗: After surgery (Arm A: approximately 28-31 weeks after initiation of treatment; Arm B: approximately 13-15 weeks after initiation of treatment)
Tumor sterilization was defined as the absence of residual tumor cells in the resected specimen including lymph nodes (ypT0-N0). The rate of sterilization of the tumoral specimen was assessed after surgery on the surgical specimen by local review. Analyses were performed for participants who have been operated as defined by the protocol (within the study and TME technique) and for all participants who have been operated. Reported is the percentage of participants with tumor sterilization.
次要结局
- Percentage of Participants Who Died(Baseline up to approximately 6 years)
- Number of Cycles of Chemotherapy(Arm A: Week 16 to Week 23; Arm B: Week 1 to Week 7)
- Percentage of Participants With Surgery(Arm A: approximately 28-31 weeks after initiation of treatment; Arm B: approximately 13-15 weeks after initiation of treatment)
- Percentage of Participants With Second Cancer, Local or Regional Recurrence, Distant Metastasis, or Death(Baseline up to approximately 6 years)
- Overall Survival(From the first treatment administration to the date of death (up to approximately 6 years))
- Percentage of Participants With Tumor Down-Staging (ypT0-pT2)(After surgery (Arm A: approximately 28-31 weeks after initiation of treatment; Arm B: approximately 13-15 weeks after initiation of treatment))
- Percentage of Participants With Local and Distant Recurrences(After surgery (Arm A: approximately 28-31 weeks after initiation of treatment; Arm B: approximately 13-15 weeks after initiation of treatment))
- Disease-Free Survival (DFS)(From first time of the treatment administration to the date of second cancer, local or regional recurrence, distant metastasis or death from any cause (up to approximately 6 years))
- Number of Cycles of Induction Chemotherapy(6 cycles (12 weeks; cycle length = 14 days))
- Number of Cycles of Radiotherapy(Arm A: Week 16 to Week 23; Arm B: Week 1 to Week 7)