复发时间与扩散大B细胞淋巴瘤的明显进化动态有关.
Laura K Hilton1,2, Henry S Ngu1, Brett Collinge1,3
1Centre for Lymphoid Cancer, BC Cancer, Vancouver, British Columbia, Canada.
概括
耐火性或复发性扩散性大B细胞淋巴瘤 (DLBCL) 的结果取决于复发时间. 晚期复发往往代表着不同的,化学疗法原始的疾病,影响治疗策略.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 基因组学就是基因组学.
背景情况:
- 扩散性大B细胞淋巴瘤 (DLBCL) 的治愈率很高,但耐火性或复发性DLBCL (rrDLBCL) 的结果很差,特别是早期复发.
- 以前的研究发现了复发丰富的特征,但需要对连续活检进行直接比较,以了解rrrDLBCL的进化动态.
研究的目的:
- 确认DLBCL中复发时间和二线治疗后的结果之间的关系.
- 确定 rrDLBCL.中这种关系背后的进化动态.
主要方法:
- 检查了221名DLBCL患者的结局,这些患者接受了二线治疗和自身干细胞移植 (ASCT).
- 在129名患者的连续活检上进行了分子表征,包括全基因组/外基因组测序.
主要成果:
- 晚期复发 (>2年) 的结局优于初级耐火性 (<9个月) 或早期复发 (9-24个月) 的结局.
- 诊断和复发活检显示出细胞起源和亚组的一致性,但随着时间的推移,突变分歧越来越大.
- 晚期复发与诊断对应物共享了很少的突变,表明分支进化;在分离的瘤中观察到关键基因的融合进化.
结论:
- 在DLBCL的晚期复发可能代表遗传上不同的,化学疗法-naive疾病.
- 这些发现对优化rrDLBCL患者管理策略有重大影响.
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