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AML伴遗传学异常定义类型学习笔记(六)AML伴BCR::ABL1融合

  • 2026-02-09 19:06:03
AML伴遗传学异常定义类型学习笔记(六)AML伴BCR::ABL1融合
说明:笔者为初学者,此为笔者依据文献资料记载自用笔记,不作为自己观点。
前言:
WHO-HAEM5中,AML伴遗传学异常定义类型有13个。其中,融合6个、重排3个、突变2个、骨髓增生异常相关(myelodysplasia-related,MR)1个和其他1个。本篇文章主要针对AML伴BCR::ABL1融合进行总结梳理。
定义

AML伴BCR:ABL1融合定义为原发AML,初诊时即为BCR:ABL1阳性,无CML及其疾病进展证据的特定类型。

形态学

骨髓细胞较多,形态学变化大,可以不伴成熟的微分化或伴单核细胞分化;与CML急变相比,脾肿大少见,原始细胞比例较高,嗜碱性粒细胞虽易见,但很少>2%,侏儒巨核细胞很少见。

免疫表型:

大多数病例表达 CD34、HLA-DR和髓系抗原(CD13、CD33和CD117);CD7、CD19和TdT的表达也可见。

遗传学:

BCR:ABL1融合可以出现在AML(主要是p210),ALL(主要是p190),MPAL(P190 融合转录本比 P210 更常见),CML(p210的占比非常高)中;当诊断为AML伴BCR:ABL1融合时,约一半以上病例存在额外染色体异常;若 P210 阳性,那么在鉴别诊断时应该多注意整体,需想到 CML 急变可能。

诊断标准:

AML伴BCR:ABL1融合类型的诊断,主要依据血中和(或)骨髓原始细胞比例≥20%和遗传学异常证据进行的;BCR:ABL1可在骨髓增生异常肿瘤转化的 AML中继发性获得,或在既往缺乏 BCR:ABL1复发/难治性的AML中出现,这些病例均不应归类于本类型;AML伴BCR:ABL1异常表达淋系抗原并符合混合表型条件者,应归类为MPAL伴BCR:ABL1融合。

基本标准:

1.骨髓和(或)外周血为原始细胞≥20%并表达髓系免疫表型的AML

2.初诊时检测到 BCR:ABL1融合

3.在诊断前至治疗后均缺乏CML特征

理想标准:

1.常规核型检测到t(9;22)(q34.1;q11.2)

2.确定 BCR:ABL1转录亚型并建立BCR:ABL1 转录本基线水平,用于监测治疗反应

关于预后:

根据成人急性髓系白血病(非急性早幼粒细胞白血病)中国诊疗指南(2023年版),t(9;22)(q34.1;q11.2) /BCR::ABL1为预后不良组。

何苗,田红娟,赵霄晨,等. BCR-ABL P190阳性急性髓系白血病的临床分析[J].中国医刊,2026,61(01):124-128.

王珏 | 无锡市人民医院 郑潇寒 | 南京脑科医院,BCR-ABL1融合基因阳性急性淋巴细胞白血病的那些小秘密 数智检验医学

卢兴国,叶向军,吴建国。造血肿瘤诊断学 [M]. 上海上海科学技术出版社,2025

沈悌,赵永强 血液病诊断及疗效标准  第4版[M]. 北京:科学出版社, 2018

中华医学会血液学分会白血病淋巴瘤学组. 成人急性髓系白血病(非急性早幼粒细胞白血病)中国诊疗指南(2023年版) [J] . 中华血液学杂志, 2023, 44(9) : 705-712. DOI: 10.3760/cma.j.issn.0253-2727.2023.09.001.

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  135. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/framework/src/think/contract/TemplateHandlerInterface.php ( 1.60 KB )
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  137. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-template/src/template/driver/File.php ( 2.41 KB )
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  139. /yingpanguazai/ssd/ssd1/www/no.67808.cn/runtime/temp/6df755f970a38e704c5414acbc6e8bcd.php ( 12.06 KB )
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  1. CONNECT:[ UseTime:0.000914s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000905s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000347s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000279s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000507s ]
  6. SELECT * FROM `set` [ RunTime:0.000219s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000564s ]
  8. SELECT * FROM `article` WHERE `id` = 461784 LIMIT 1 [ RunTime:0.000334s ]
  9. UPDATE `article` SET `lasttime` = 1770910758 WHERE `id` = 461784 [ RunTime:0.003400s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000224s ]
  11. SELECT * FROM `article` WHERE `id` < 461784 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000404s ]
  12. SELECT * FROM `article` WHERE `id` > 461784 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001235s ]
  13. SELECT * FROM `article` WHERE `id` < 461784 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003408s ]
  14. SELECT * FROM `article` WHERE `id` < 461784 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.013542s ]
  15. SELECT * FROM `article` WHERE `id` < 461784 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001503s ]
0.172344s