前线TKI抗慢性髓性白血病患者中BCR-ABL-1激酶域突变的回顾性分析:一个单一中心的经验
Gaurav Datta1, S P Verma1, A K Tripathi1
1Department of Clinical Hematology, King George's Medical University, Uttar Pradeshm, Lucknow, 226003 India.
概括
慢性髓性白血病 (CML) 中的氨酸激酶抑制剂耐药性通常与氨酸激酶域 (TKD) 突变有关. 识别这些TKD突变,特别是T315I,对于选择有效的治疗方法和改善患者存活率至关重要.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 慢性髓性白血病 (CML) 是一种在印度普遍存在的骨髓增殖性瘤.
- 氨酸激酶抑制剂 (TKIs) 是CML的主要治疗方法.
- 对TKI的耐药性通常来自于氨酸激酶域 (TKD) 内的突变.
研究的目的:
- 调查CKD突变在CML患者中存在的流行率和模式,这些患者对一线TKIs具有抗性或不充分的反应.
- 分析TKD突变对CML患者整体存活时间 (OS) 的影响.
主要方法:
- 一项回顾性观察性研究分析了2014年至2021年期间1633名CML患者的医疗记录.
- 在治疗失败的患者中识别和描述TKD突变.
- 具有TKD突变和没有TKD突变的患者之间的整体存活时间的比较.
主要成果:
- 6.6%的患者 (108/1633) 经历了治疗失败.
- 在这些患者中,TKD突变在71%的患者中被发现 (62/108).
- 最常见的突变是T315I (46%),M351T (16%),以及G250E (11%).
- ATP结合区域是受影响最常见的部位 (50%).
- 患有T315I突变和ATP结合域突变的患者的整体存活率明显较低.
结论:
- TKD突变是CKL中TKI耐药性的重要原因.
- 特定突变的存在,如T315I和ATP结合域中的突变,会对患者的生存产生负面影响.
- 对TKD突变的基因型测试对于TKI耐药CML至关重要,以指导治疗选择和改善结果.
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