在爆发期儿科慢性髓性白血病中基因组变异概况:预易性和驱动性改变
Yvonne Lisa Behrens1,2, Thea Reinkens1, Winfried Hofmann1
1Department of Human Genetics, Hannover Medical School, Hannover, Germany.
British journal of haematology
|May 9, 2025
概括
确定了儿科爆发期慢性髓性白血病 (CML-BP) 的遗传变异. DNA损伤反应 (DDR) 基因变异表明一种倾向,影响癌症治疗和对受影响家庭的监测.
科学领域:
- 遗传学 遗传学 是一个
- 在瘤学瘤学.
- 儿科医学 儿科医学
背景情况:
- 儿科爆发期慢性髓性白血病 (CML-BP) 是一种罕见而严重的疾病.
- 德国CML-PAED-II注册表在231名儿科患者中发现了25例CML-BP病例 (11%).
- 了解基因变异对于儿科CML-BP的早期发病和疾病转变至关重要.
研究的目的:
- 确定与儿科CML-BP早期发病和疾病转变相关的遗传变异.
- 为了比较de novo和二次性CML-BP之间的遗传特征.
- 研究DNA损伤反应 (DDR) 基因在儿科CML-BP中的作用.
主要方法:
- 全基因组测序 (WGS),深度向测序和细胞遗传学分析对19例儿科CML-BP病例进行.
- 分析包括新的 (n=11) 和二次 (n=8) CML-BP.
- 使用了19名慢性阶段的儿科CML患者的比较队列.
主要成果:
- 副本数变异 (CNVs) 比单核酸变异 (SNVs) 更频繁,在二次CML-BP中比de novo更为普遍.
- 在ABL1 (24%),RUNX1 (12%) 和ASXL1 (12%) 中发现了复发性致病性体内SNV.
- 9名患者 (47%) 在DDR基因 (ATM,CHEK2,FANCM,HERC2,NBN,RAD54B,RECQL4,SETD2,TP63) 中具有致病性生殖系或体变异.
- 在对比队列中,只有一个患者 (5%) 患有致病性DDR生殖系变异.
结论:
- 提供了对儿科CML-BP的新型病原遗传见解.
- 致病性DDR相关的生殖系变体的高频率表明存在遗传倾向.
- 这些发现对儿童CML-BP患者及其家属的癌症治疗和监测有潜在的影响.
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