t(18;22) / IGL::BCL2转位定义了一个独特的CLL亚型:与早期治疗启动相关
Shaobin Yang1, Huilan Li2, Jingya Yao2
1Sino-US Diagnostics Lab, Tianjin Enterprise Key Laboratory of AI-Aided Hematopathology Diagnosis, Tianjin, China. hbyangshaobin@163.com.
Journal of hematopathology
|April 16, 2025
概括
罕见的t(18;22) 转位,产生IGL::BCL2融合,主要在慢性淋巴细胞白血病 (CLL) 中见到,并且经常与三形12同时发生. 这些CLL病例可能进展得更快,需要更早的治疗,但需要更多的研究.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 遗传学 遗传学 是一个
背景情况:
- 通过t(14;18) 与IGH的BCL2基因融合在B细胞淋巴瘤,特别是毛囊淋巴瘤中很常见.
- 通过t(18;22) 的BCL2与IGL的融合是一种较少发生的染色体异常.
研究的目的:
- 研究具有t(18;22) /IGL::BCL2转位的B细胞淋巴瘤的临床病理特征.
- 分析患者数据和文献,寻找与这种罕见转位相关的特征和临床结果.
主要方法:
- 分析了5例B细胞淋巴瘤病例,其中t(18;22) 转位.
- 综合性诊断评估包括病理学,流细胞计,型,FISH和突变分析.
- 关于t(18;22) 案例的广泛文献综述.
主要成果:
- 所有五名被研究的患者都是男性,被诊断患有慢性淋巴细胞白血病 (CLL).
- 观察到t(18;22) 转位,通常与三发症12 (+12).
- 免疫类型分析显示,与经典的CLL没有显著差异;在一些人中存在IGHV突变.
- 文献审查发现了51例病例,主要是CLL,t(18;22).
- 初步数据表明,在这些情况下,初次治疗 (TTFT) 的时间较短,有些人对布鲁顿氨酸激酶 (BTK) 抑制剂表现出耐药性.
结论:
- 导致IGL::BCL2融合的t(18;22) 转位是罕见的,主要发生在CLL中.
- 这种遗传异常常常与三症12并存.
- 案例的t(18;22) 可能有较短的TTFT,保证在更大的队列中进行进一步调查.
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