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白蛋白紫杉醇:三周或许优于四周

2023年11月02日
来源:SIBCS


  紫杉类是晚期乳腺癌最有效的标准化疗药物之一,但是传统紫杉类难溶于水,需要聚氧乙烯蓖麻油或乙醇等作为溶剂,因此过敏反应发生率较高。白蛋白紫杉醇不需要溶剂就可溶解于水,可以避免溶剂所致过敏反应,故被广泛用于晚期乳腺癌。不过,白蛋白紫杉醇标准用药方案为每4周3次,每次150mg/m²,患者耐受性较差,导致至少47%的患者减量甚至停药。为了兼顾有效性和耐受性,优化用药方案仍然是提高患者依从性的当务之急。

  2023年10月26日,美国转化肿瘤学会《肿瘤学家》在线发表北京大学肿瘤医院刘雅昕、宋国红、邸立军、姜晗昉、冉然、张如艳、张燕、李惠平等学者的CABC012研究报告,头对头比较了晚期乳腺癌3周4周白蛋白紫杉醇化疗方案的有效性和安全性。

CABC012 (NCT04192331): Nab-paclitaxel Dose Schedual for HER-2 Negative Advanced Breast Cancer (A Single-arm Opened Randomized Phase II Study of Nab-paclitaxel Dose Schedual in Advanced Breast Cancer)

  该单中心非盲随机对照二期临床研究于2019年3月~2021年7月入组HER2阴性晚期乳腺癌既往不超过二线化疗患者94例,按1∶1的比例随机分为两组:
  • 3周方案47例:每3周第1、8天给予白蛋白紫杉醇125mg/m²
  • 4周方案47例:每4周第1、8、15天给予白蛋白紫杉醇125mg/m²


  上述治疗直至无法耐受或疾病进展。无法耐受毒性的患者对白蛋白紫杉醇获益后可以接受维持治疗。主要研究终点为无进展生存。

  结果,3周方案与4周方案相比:
  • 中位无进展生存:未达中位6.8个月
  • 进展或死亡风险:减少56%(风险比:0.44,P=0.029)
  • 中位总生存:28.0个月比25.8个月
  • 客观缓解率:51.1%比48.9%
  • 疾病控制率:93.6%比80.9%
  • 毒性相关治疗中断率:8.5%比29.8%
  • 毒性相关治疗推迟率:6.4%比23.4%




  因此,该单中心小样本二期临床研究初步结果表明,对于HER2阴性晚期乳腺癌,白蛋白紫杉醇3周方案与4周方案相比,抗肿瘤活性和安全性较好,依从性较高,医院就诊次数较少,化疗药物成本和不良反应治疗成本较低,3周方案可能是临床实践更好的治疗方案,故有必要进一步长期随访,并开展多中心大样本三期临床研究进行验证。

  对此,我们不由想起一句话:陪伴是最长情的告白。对于大多数晚期癌症患者而言,毒性(包括经济学毒性)较低、耐受性较好、少折腾、能够长期坚持的治疗方案效果或许更好更持久。我们既需要高富帅、白富美、轰轰烈烈、风光惊艳的新药研究,也需要此类接地气的经济实用型研究,尤其对于月收入仅1000元的6亿人口。




Oncologist. 2023 Oct 26. IF: 5.8

Three-Week Versus 4-Week Schedule of nab-Paclitaxel in Patients With Metastatic Breast Cancer: A Randomized Phase II Study.

Liu Y, Song G, Di L, Jiang H, Ran R, Zhang R, Zhang Y, Li H.

Peking University Cancer Hospital and Institute, Beijing, China.

LESSONS LEARNED
  • This study demonstrated the better safety profile and antitumor activity of a 3-week schedule of nab-paclitaxel compared with a 4-week schedule in patients with HER2-negative metastatic breast cancer.
  • A 3-week schedule yielded an improved safety profile, better compliance, and fewer hospital visits.

BACKGROUND: This head-to-head study compared a 3-week versus 4-week schedule of nab-paclitaxel in patients with metastatic breast cancer (mBC).

METHODS: Patients with HER2-negative mBC were enrolled and randomly assigned (1:1) to receive nab-paclitaxel for a 3-week schedule (125 mg/m2 on days 1 and 8) or a 4-week schedule (same dose on days 1, 8, and 15) until disease progression or treatment intolerance. Patients with intolerable toxicities were allowed to receive a maintenance regimen after benefiting from nab-paclitaxel. The primary endpoint was progression-free survival (PFS).

RESULTS: Ninety-four patients were included in the analysis (n = 47 in each arm). A longer median PFS (mPFS) was observed in the 3-week versus the 4-week schedule in the overall population (not reached vs. 6.8 months; hazard ratio [HR] = 0.44; P = .029). Patients in the 2 arms had a similar overall survival (28.0 vs. 25.8 months), objective response rate (51.1% vs. 48.9%), and disease control rate (93.6% vs. 80.9%). The 3-week schedule was associated with a lower rate of toxicity-related treatment discontinuation (8.5% vs. 29.8%) and dose delays (6.4% vs. 23.4%).

CONCLUSION: This study demonstrated the better antitumor activity and safety profile of a 3-week over 4-week nab-paclitaxel schedule in HER2-negative mBC, suggesting that a 3-week schedule may be a better treatment regimen in clinical practice.

ClinicalTrials.gov Identifier: NCT04192331

KEYWORDS: HER2-negative; dose schedule; metastatic breast cancer; nab-paclitaxel; prospective randomized control trial.

PMID: 37882706

DOI: 10.1093/oncolo/oyad288












































               
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评论
02月18日
李刚
梧州市红十字会医院 | 肿瘤内科
是临床需要这类更接地气的科研项目,以帮助临床实践为患者服务。
02月16日
杨世忠
阳泉市肿瘤防治研究所 | 肿瘤内科
白紫三周方案优于四周方案
02月15日
夏月琴
盐城市第七人民医院(盐城市公共卫生临床中心、盐城市职业病防治院) | 肿瘤内科
对于大多数晚期癌症患者而言,毒性(包括经济学毒性)较低、耐受性较好、少折腾、能够长期坚持的治疗方案效果或许更好更持久。