Abstract

According to the literature, lineage switch after CAR-T-cell infusion has been described in four cases of B-ALL, including three patients with mixed lineage leukemia (MLL) rearrangement,[1,2] and one pediatric patient with TCF3-ZNF384 fusion. In the present case, the interval between exposure to multidrug chemotherapy including cyclophosphamide and AML relapse was 5 years and 4 months. [...]the possibility cannot be ruled out that AML was secondary to chemotherapy drugs. [...]lineage switch after CD19-directed therapy is a specific mechanism of CAR resistance, with leukemic cells switching from one cell line to another after complete phenotypic alteration, and usually concerns patients with MLL rearrangement.

Details

Title
A report on Lineage switch at relapse of CD19 CAR-T therapy for Philadelphia chromosome-positive B-precursor acute lymphoblastic leukemia
Author
Lan-Zhu, Li; Sun, Qian; Yu, Fang; Li-Jia, Yang; Zi-Yao, Xu; Jin-Hua, Hu; Cao Lan; Jia-Yu, Huang; Hong, Ming; Jian-Yong, Li; Si-Xuan, Qian
Pages
2001-2003
Section
Correspondence
Publication year
2020
Publication date
Aug 2020
Publisher
Lippincott Williams & Wilkins Ovid Technologies
ISSN
03666999
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2480934243
Copyright
Copyright © 2020 The Chinese Medical Association, produced by Wolters Kluwer, Inc. under the CC-BY-NC-ND license. This work is published under http://creativecommons.org/licenses/by-nc-nd/4.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.