世界卫生组织第五版分类 (WHO 2022) 和国际共识分类建议MDS-SFB31的验证和比较
Linlin Liu1, Bing Li1,2, Zefeng Xu1,2
1State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, National Clinical Research Centre for Blood Diseases, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China.
British journal of haematology
|April 24, 2024
概括
带有SF3B1突变的骨髓发育综合征 (MDS) 需要验证诊断标准. 环状 sideroblasts (RS) ≥15%可能替代SF3B1突变,变异性等位基因频率<10%表明预后较差.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 分子病理学分子病理学
背景情况:
- 骨髓发育综合征 (MDS) 是一种克隆性造血干细胞疾病.
- 世卫组织第五版分类和国际共识分类 (ICC) 提出了SF3B1突变的MDS标准 (MDS-SF3B1).
- 验证这些标准,特别是环状 sideroblasts (RS) 和 SF3B1 变异基因频率 (VAF) 的作用,至关重要.
研究的目的:
- 为验证世卫组织2022年和ICC提出的MDS-SF3B1的诊断标准.
- 评估RS百分比的预后意义,SF3B1VAF,以及MDS中的多系生殖不良症 (MLD).
主要方法:
- 分析了125个连续的MDS病例,其中SF3B1突变或RS≥15%没有过多的爆发.
- 基于RS状态,SF3B1VAF和MLD存在的临床特征和生存结果的比较.
主要成果:
- 具有RS的SF3B1阴性MDS显示出明显的临床特征和更差的预后.
- ≥15%的RS存在与与SF3B1突变相似的预后相关,当排除高风险遗传特征时.
- SF3B1 VAF <10%与较短的整体存活 (OS) 相关,支持ICC的10%值.
- 多血统发育不良 (MLD) 是世卫组织2022年和ICC定义的MDS-SF3B1.1中较短的OS的重要独立预测因素.
结论:
- 这项研究支持世卫组织2022年提出的建议,即≥15%的RS可以替代MDS诊断中的SF3B1突变,前提是没有高风险的遗传特征.
- SF3B1 VAF <10%是MDS生存的相关预后标志物.
- 在MDS-SF3B1分类系统中,多系遗传症仍然是预后不佳的关键形态指标.
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