[Two cases of refractory childhood acute B-lymphoblastic leukemia with positive KMT2A-USP2 treated with Belintouximab]

Zhonghua Er Ke Za Zhi. 2023 Oct 2;61(10):930-932. doi: 10.3760/cma.j.cn112140-20230406-00244.
[Article in Chinese]

Abstract

例1,女,3月龄,因“发现血常规异常2 d”就诊,初诊急性B淋巴细胞白血病(B-ALL),KMT2A-USP2融合基因阳性,高危组,应用Interfant-06方案化疗,化疗3个疗程后微小残留病(MRD)及融合基因持续阳性。例2,男,4岁,因“反复下肢痛、发现中性粒细胞减少1个月”就诊,初诊B-ALL,KMT2A-USP2融合基因阳性,中危组,应用中国儿童肿瘤协作组急性淋巴细胞白血病2020方案化疗,化疗第19天、第46天MRD及融合基因阳性,因第46天MRD大于1.00%升为高危组。2例患儿诱导及早期强化治疗后MRD持续阳性,接受28 d贝林妥欧单抗治疗后,MRD与融合基因均转阴。.

Publication types

  • Case Reports

MeSH terms

  • Child
  • Humans
  • Myeloid-Lymphoid Leukemia Protein* / genetics
  • Precursor Cell Lymphoblastic Leukemia-Lymphoma*
  • Ubiquitin Thiolesterase

Substances

  • Myeloid-Lymphoid Leukemia Protein
  • USP2 protein, human
  • Ubiquitin Thiolesterase