Department of Medical Oncology, University Hospital of Besançon and CIC-BT506, Besançon, France.
Department of Medical Oncology, University Hospital of Besançon and CIC-BT506, Besançon, France.
Clin Colorectal Cancer. 2019 Sep;18(3):200-208.e1. doi: 10.1016/j.clcc.2019.04.006. Epub 2019 May 3.
BACKGROUND: Recurrence and distant metastases remain a significant issue in locally advanced rectal cancer (LARC). Several multimodal strategies are assessed in clinical trials. PATIENTS AND METHODS: Patients with mid/low magnetic resonance imaging-defined high-risk LARC were randomized to arm A (12-week bevacizumab + FOLFOX-4 then bevacizumab-5-fluorouracil [5-FU]-radiotherapy [RT] before total mesorectal excision [TME]) or arm B (bevacizumab-5-FU-RT then TME). Long-term efficacy and safety up to 5 years' follow-up are reported. No comparison between arms was planned. RESULTS: Overall, 91 patients (46 in arm A and 45 in arm B) were included. Main results have been presented previously. During the late follow-up period (> 4 weeks after surgery), 4 patients (8.7%) in arm A and 4 (8.9%) in arm B experienced grade 3/4 adverse events related to bevacizumab; the most frequent were 2 anastomotic fistulas (both in arm A) and abscesses (1 in arm A and 2 in arm B). At 5 years' follow-up, 9 (19.6%) and 11 (24.4%) patients in arms A and B developed a fistula in the year after surgery, and 2 (4.3%) in arm A at > 1 year after surgery. Most resolved before study end. Five-year disease-free survival was 70% and 64.3% in arms A and B, respectively. Five-year overall survival was 90.5% (95% confidence interval, 76.7, 96.3) in arm A and 72.7% (95% confidence interval, 56.0, 83.9) in arm B. CONCLUSION: Neoadjuvant bevacizumab + FOLFOX-4 may have the potential to increase survival outcomes when followed by bevacizumab-5-FU-RT and TME in LARC. Bevacizumab-5-FU-RT then TME was associated with a higher-than-projected rate of anastomotic fistulas. Further research of neoadjuvant strategies in LARC is encouraged.
背景:局部晚期直肠癌(LARC)仍然存在复发和远处转移的问题。目前正在临床试验中评估多种多模式策略。
患者和方法:中/低位磁共振成像定义的高危 LARC 患者被随机分配到 A 组(12 周贝伐珠单抗+FOLFOX-4 然后贝伐珠单抗-氟尿嘧啶[5-FU]-放疗[RT]前全直肠系膜切除[TME])或 B 组(贝伐珠单抗-5-FU-RT 然后 TME)。报告了最长 5 年随访的长期疗效和安全性。未计划对臂进行比较。
结果:共有 91 名患者(A 组 46 名,B 组 45 名)入选。主要结果以前已经报告过。在晚期随访期间(手术后>4 周),A 组有 4 名(8.7%)患者和 B 组有 4 名(8.9%)患者发生与贝伐珠单抗相关的 3/4 级不良事件;最常见的是 2 例吻合口瘘(均在 A 组)和脓肿(A 组 1 例,B 组 2 例)。在 5 年随访时,A 组和 B 组分别有 9 名(19.6%)和 11 名(24.4%)患者在手术后 1 年内发生瘘,A 组有 2 名(4.3%)患者在手术后 1 年以上发生瘘。大多数在研究结束前得到解决。A 组和 B 组的 5 年无病生存率分别为 70%和 64.3%。A 组的 5 年总生存率为 90.5%(95%置信区间,76.7,96.3),B 组为 72.7%(95%置信区间,56.0,83.9)。
结论:新辅助贝伐珠单抗+FOLFOX-4 联合贝伐珠单抗-5-FU-RT 和 TME 治疗 LARC 可能增加生存结果。贝伐珠单抗-5-FU-RT 然后 TME 与吻合口瘘的发生率高于预期相关。鼓励进一步研究 LARC 的新辅助策略。
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