针对低风险胚胎狂痛瘤的JRS-I LRA0401和LRB0402日本狂痛瘤研究小组试验的结果
Hajime Hosoi1,2,3, Mitsuru Miyachi4,5, Satoshi Teramukai6,5,7
1Department of Pediatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine (KPUM), Kyoto, Japan. hhosoi@koto.kpu-m.ac.jp.
International journal of clinical oncology
|August 23, 2024
概括
降低低风险性拉布多米索尔科马患者治疗中循环胺剂量的降低并没有降低无失败生存率 (FFS). 这种方法可以减少不良事件,如不孕不育,同时保持治疗疗效.
科学领域:
- 儿科瘤学 儿科瘤学
- 结核肉瘤治疗方法 结核肉瘤治疗方法
- 临床试验分析
背景情况:
- 跨组狂肌肉瘤研究IV显示,使用更高的环胺剂量 (26.4 g/m2) 改善了无故障生存率 (FFS).
- 高剂量环胺可能会增加小儿狂宫肌肉瘤患者的不良事件风险,包括不孕不育.
- 在JRS-I LRA0401和LRB0402协议中,研究了降低环胺剂量 (9.6 g/m2和17.6 g/m2) 以减轻毒性.
研究的目的:
- 为了评估在低风险狂宫肌肉瘤治疗中降低环胺剂量是否会影响FFS的发生率.
- 评估改性化疗方案的安全性和有效性,用于小儿rhabdomyosarcoma亚组.
主要方法:
- 小组A接受了24周的温克里斯,阿克丁诺米辛D和环胺 (1.2 g/m2/周期).
- 亚组B接受了24周的温克里斯,阿提诺米辛D和环胺 (2.2g/m2/周期),随后是24周的温克里斯和阿提诺米辛D.
- 在两个小组中的II/III组患者接受了放射治疗.
主要成果:
- 小组A (n=12): 3年FFS率为83%,3年整体存活率 (OS) 为100%,有1次局部复发,没有4级毒性或死亡.
- 小组B (n=16): 3年FFS率为88%,3年OS率为94%,没有意外的4级毒性或死亡.
- 两种降低剂量方案都显示了有利的生存结果和可接受的毒性概况.
结论:
- 对于低风险亚组A的狂宫肌肉瘤,使用低剂量环胺 (JRS-I LRA0401) 进行较短时间的治疗并没有影响FFS.
- 对于低风险亚组B的拉布多米索尔科马,中度降低环胺剂量 (JRS-I LRB0402) 也维持了FFS的发病率.
- 这些发现支持在特定的儿科狂肌肉瘤方案中使用较低的环胺剂量,以潜在地减少长期不良影响.
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