Review

Advances in the treatment of pediatric B-cell acute lymphoblastic leukemia with high-risk cytogenetics

  • TANG Junqian ,
  • LI Benshang
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  • Department of Hematology/Oncology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 201315, China
LI Benshang, E-mail: libenshang@scmc.com.cn.

Received date: 2025-03-25

  Accepted date: 2025-06-19

  Online published: 2025-10-23

Abstract

B-cell acute lymphoblastic leukemia (B-ALL) is one of the most common pediatric malignancies, characterized by highly heterogeneous genetic alterations. The precise identification of high-risk genetic abnormalities, such as BCR-ABL1, KMT2A rearrangement, and TCF3-HLF, plays a crucial role in risk stratification, the formulation of chemotherapy regimens, and the selection of individualized therapies. High-risk cytogenetics can profoundly impact the trajectory of disease progression and therapeutic outcomes. Regarding therapy, the refinement of treatment strategies through precise molecular classification and risk stratification has catalyzed a gradual paradigm shift in clinical practice. This transition moves away from the traditional reliance on conventional chemotherapy agents toward individualized pharmacotherapy and disease management strategies based on prognostic risk stratification. In recent years, immunotherapy has achieved significant progress in leukemia treatment. Chimeric antigen receptor T-cell (CAR-T) therapy and monoclonal antibodies have emerged as novel therapies for patients with relapsed/refractory (R/R) B-ALL harboring high-risk cytogenetic features. These innovations have significantly improved the prognosis for this patient population. Currently, new clinical trials are continuously advancing. Emerging targeted therapies and cell therapies represented by CAR-T cells have become hot spots of current research and have demonstrated remarkable development potential. This review synthesizes recent therapeutic advances across pediatric B-cell acute lymphoblastic leukemia subtypes harboring high-risk genetic abnormalities, with a focused emphasis on the evolving role of immunotherapy. By critically integrating current evidence, we aim to outline rational strategies for developing safer and more effective therapies that can meaningfully improve clinical outcomes in these high-risk children and adolescents.

Cite this article

TANG Junqian , LI Benshang . Advances in the treatment of pediatric B-cell acute lymphoblastic leukemia with high-risk cytogenetics[J]. Journal of Shanghai Jiao Tong University (Medical Science), 2025 , 45(10) : 1390 -1399 . DOI: 10.3969/j.issn.1674-8115.2025.10.015

References

[1] BROWN P, INABA H, ANNESLEY C, et al. Pediatric acute lymphoblastic leukemia, version 2.2020, NCCN clinical practice guidelines in oncology[J]. J Natl Compr Canc Netw, 2020, 18(1): 81-112.
[2] YIN H X, WANG J F, TAN Y X, et al. Transcription factor abnormalities in B-ALL leukemogenesis and treatment[J]. Trends Cancer, 2023, 9(10): 855-870.
[3] SUZUKI K, OKUNO Y, KAWASHIMA N, et al. MEF2D-BCL9 fusion gene is associated with high-risk acute B-cell precursor lymphoblastic leukemia in adolescents[J]. J Clin Oncol, 2016, 34(28): 3451-3459.
[4] ZHANG M, ZHANG H, LI Z H, et al. Functional, structural, and molecular characterizations of the leukemogenic driver MEF2D-HNRNPUL1 fusion[J]. Blood, 2022, 140(12): 1390-1407.
[5] LEO I R, ASWAD L, STAHL M, et al. Integrative multi-omics and drug response profiling of childhood acute lymphoblastic leukemia cell lines[J]. Nat Commun, 2022, 13(1): 1691.
[6] SALIM M, HELDT F, THOMAY K, et al. Cryptic TCF3 fusions in childhood leukemia: detection by RNA sequencing[J]. Genes Chromosomes Cancer, 2022, 61(1): 22-26.
[7] TASIAN S K. TCF3:: HLF acute lymphoblastic leukemia: still challenging to cure thirty years later[J]. Haematologica, 2023, 108(7): 1713-1714.
[8] FISCHER U, FORSTER M, RINALDI A, et al. Genomics and drug profiling of fatal TCF3-HLF-positive acute lymphoblastic leukemia identifies recurrent mutation patterns and therapeutic options[J]. Nat Genet, 2015, 47(9): 1020-1029.
[9] PADELLA A, GHELLI LUSERNA DI RORà A, MARCONI G, et al. Targeting PARP proteins in acute leukemia: DNA damage response inhibition and therapeutic strategies[J]. J Hematol Oncol, 2022, 15(1): 10.
[10] LEONARD J, WOLF J S, DEGNIN M, et al. Aurora A kinase as a target for therapy in TCF3-HLF rearranged acute lymphoblastic leukemia[J]. Haematologica, 2021, 106(11): 2990-2994.
[11] HUNGER S P, TRAN T H, SAHA V, et al. Dasatinib with intensive chemotherapy in de novo paediatric Philadelphia chromosome-positive acute lymphoblastic leukaemia (CA180-372/COG AALL1122): a single-arm, multicentre, phase 2 trial[J]. Lancet Haematol, 2023, 10(7): e510-e520.
[12] JABBOUR E, KANTARJIAN H M, ALDOSS I, et al. Ponatinib vs imatinib in frontline Philadelphia chromosome-positive acute lymphoblastic leukemia: a randomized clinical trial[J]. JAMA, 2024, 331(21): 1814-1823.
[13] LIU W Y, WANG C, OUYANG W Y, et al. Efficacy and safety of olverembatinib in adult BCR: : ABL1-positive ALL with T315I mutation or relapsed/refractory disease[J]. Br J Haematol, 2024, 205(6): 2228-2233.
[14] JAIN N, ROBERTS K G, JABBOUR E, et al. pH-like acute lymphoblastic leukemia: a high-risk subtype in adults[J]. Blood, 2017, 129(5): 572-581.
[15] SENAPATI J, JABBOUR E, KONOPLEVA M, et al. Philadelphia-like genetic rearrangements in adults with B-cell ALL: refractoriness to chemotherapy and response to tyrosine kinase inhibitor in ABL class rearrangements[J]. JCO Precis Oncol, 2023, 7: e2200707.
[16] ROBERTS K G, YANG Y L, PAYNE-TURNER D, et al. Oncogenic role and therapeutic targeting of ABL-class and JAK-STAT activating kinase alterations in Ph-like ALL[J]. Blood Adv, 2017, 1(20): 1657-1671.
[17] EL CHAER F, KENG M, BALLEN K K. MLL-rearranged acute lymphoblastic leukemia[J]. Curr Hematol Malig Rep, 2020, 15(2): 83-89.
[18] GUNDRY M C, GOODELL M A, BRUNETTI L. It's all about MEis: menin-MLL inhibition eradicates NPM1-mutated and MLL-rearranged acute leukemias in mice[J]. Cancer Cell, 2020, 37(3): 267-269.
[19] ISSA G C, ALDOSS I, THIRMAN M J, et al. Menin inhibition with revumenib for KMT2A-rearranged relapsed or refractory acute leukemia (AUGMENT-101)[J]. J Clin Oncol, 2025, 43(1): 75-84.
[20] MOORMAN A V, RICHARDS S M, ROBINSON H M, et al. Prognosis of children with acute lymphoblastic leukemia (ALL) and intrachromosomal amplification of chromosome 21 (iAMP21)[J]. Blood, 2007, 109(6): 2327-2330.
[21] MOORMAN A V, ROBINSON H, SCHWAB C, et al. Risk-directed treatment intensification significantly reduces the risk of relapse among children and adolescents with acute lymphoblastic leukemia and intrachromosomal amplification of chromosome 21: a comparison of the MRC ALL97/99 and UKALL2003 trials[J]. J Clin Oncol, 2013, 31(27): 3389-3396.
[22] HEEREMA N A, CARROLL A J, DEVIDAS M, et al. Intrachromosomal amplification of chromosome 21 is associated with inferior outcomes in children with acute lymphoblastic leukemia treated in contemporary standard-risk children's oncology group studies: a report from the children's oncology group[J]. J Clin Oncol, 2013, 31(27): 3397-3402.
[23] RYAN S L, MATHESON E, GROSSMANN V, et al. The role of the RAS pathway in iAMP21-ALL[J]. Leukemia, 2016, 30(9): 1824-1831.
[24] MOORMAN A V, ENSOR H M, RICHARDS S M, et al. Prognostic effect of chromosomal abnormalities in childhood B-cell precursor acute lymphoblastic leukaemia: results from the UK Medical Research Council ALL97/99 randomised trial[J]. Lancet Oncol, 2010, 11(5): 429-438.
[25] MULLIGHAN C G, JEHA S, PEI D Q, et al. Outcome of children with hypodiploid ALL treated with risk-directed therapy based on MRD levels[J]. Blood, 2015, 126(26): 2896-2899.
[26] LEE S H R, YANG W J, GOCHO Y, et al. Pharmacotypes across the genomic landscape of pediatric acute lymphoblastic leukemia and impact on treatment response[J]. Nat Med, 2023, 29(1): 170-179.
[27] LEAHY A B, DEVINE K J, LI Y M, et al. Impact of high-risk cytogenetics on outcomes for children and young adults receiving CD19-directed CAR T-cell therapy[J]. Blood, 2022, 139(14): 2173-2185.
[28] DAI H P, KONG D Q, SHEN H J, et al. CAR-T cell therapy followed by allogenic hematopoietic stem cell transplantation yielded comparable outcome between Ph like ALL and other high-risk ALL[J]. Biomark Res, 2023, 11(1): 19.
[29] WANG T Y, WAN X Y, YANG F, et al. Successful treatment of TCF3-HLF-positive childhood B-ALL with chimeric antigen receptor T-cell therapy[J]. Clin Lymphoma Myeloma Leuk, 2021, 21(6): 386-392.
[30] YAO Y, ZHOU J, LI Y T, et al. CD19 CAR T-cell therapy in relapsed TCF3-HLF-positive B-cell acute lymphoblastic leukemia[J]. Ann Hematol, 2024, 103(12): 6031-6033.
[31] RUELLA M, KORELL F, PORAZZI P, et al. Mechanisms of resistance to chimeric antigen receptor-T cells in haematological malignancies[J]. Nat Rev Drug Discov, 2023, 22(12): 976-995.
[32] LAMBLE A J, KOVACH A E, SHAH N N. How I treat postimmunotherapy relapsed B-ALL[J]. Blood, 2025, 145(1): 64-74.
[33] PAN J, TANG K T, LUO Y C, et al. Sequential CD19 and CD22 chimeric antigen receptor T-cell therapy for childhood refractory or relapsed B-cell acute lymphocytic leukaemia: a single-arm, phase 2 study[J]. Lancet Oncol, 2023, 24(11): 1229-1241.
[34] WANG T Y, TANG Y J, CAI J Y, et al. Coadministration of CD19- and CD22-directed chimeric antigen receptor T-cell therapy in childhood B-cell acute lymphoblastic leukemia: a single-arm, multicenter, phase Ⅱ trial[J]. J Clin Oncol, 2023, 41(9): 1670-1683.
[35] MULVEY A, TRUEB L, COUKOS G, et al. Novel strategies to manage CAR-T cell toxicity[J]. Nat Rev Drug Discov, 2025, 24(5): 379-397.
[36] BRUDNO J N, KOCHENDERFER J N. Current understanding and management of CAR T cell-associated toxicities[J]. Nat Rev Clin Oncol, 2024, 21(7): 501-521.
[37] JAIN M D, SMITH M, SHAH N N. How I treat refractory CRS and ICANS after CAR T-cell therapy[J]. Blood, 2023, 141(20): 2430-2442.
[38] LU J, QIU H Y, WANG Y, et al. Reduced-dose chemotherapy and blinatumomab as induction treatment for newly diagnosed Ph-negative B-cell precursor acute lymphoblastic leukemia: a phase 2 trial[J]. J Hematol Oncol, 2024, 17(1): 79.
[39] LOCATELLI F, ZUGMAIER G, MERGEN N, et al. Blinatumomab in pediatric patients with relapsed/refractory acute lymphoblastic leukemia: results of the RIALTO trial, an expanded access study[J]. Blood Cancer J, 2020, 10(7): 77.
[40] LOCATELLI F, ZUGMAIER G, RIZZARI C, et al. Effect of blinatumomab vs chemotherapy on event-free survival among children with high-risk first-relapse B-cell acute lymphoblastic leukemia: a randomized clinical trial[J]. JAMA, 2021, 325(9): 843-854.
[41] BROWN P A, JI L Y, XU X X, et al. Effect of postreinduction therapy consolidation with blinatumomab vs chemotherapy on disease-free survival in children, adolescents, and young adults with first relapse of B-cell acute lymphoblastic leukemia: a randomized clinical trial[J]. JAMA, 2021, 325(9): 833-842.
[42] LOCATELLI F, ZUGMAIER G, RIZZARI C, et al. Improved survival and MRD remission with blinatumomab vs. chemotherapy in children with first high-risk relapse B-ALL[J]. Leukemia, 2023, 37(1): 222-225.
[43] GABALLA M R, BANERJEE P, MILTON D R, et al. Blinatumomab maintenance after allogeneic hematopoietic cell transplantation for B-lineage acute lymphoblastic leukemia[J]. Blood, 2022, 139(12): 1908-1919.
[44] PENNESI E, MICHELS N, BRIVIO E, et al. Inotuzumab ozogamicin as single agent in pediatric patients with relapsed and refractory acute lymphoblastic leukemia: results from a phase Ⅱ trial[J]. Leukemia, 2022, 36(6): 1516-1524.
[45] O'BRIEN M M, JI L Y, SHAH N N, et al. Phase Ⅱ trial of inotuzumab ozogamicin in children and adolescents with relapsed or refractory B-cell acute lymphoblastic leukemia: children's oncology group protocol AALL1621[J]. J Clin Oncol, 2022, 40(9): 956-967.
[46] MIYAGAWA N, GOTO H, OGAWA A, et al. Phase 2 study of combination chemotherapy with bortezomib in children with relapsed and refractory acute lymphoblastic leukemia[J]. Int J Hematol, 2023, 118(2): 267-276.
[47] TASIAN S K, SILVERMAN L B, WHITLOCK J A, et al. Temsirolimus combined with cyclophosphamide and etoposide for pediatric patients with relapsed/refractory acute lymphoblastic leukemia: a Therapeutic Advances in Childhood Leukemia Consortium trial (TACL 2014-001)[J]. Haematologica, 2022, 107(10): 2295-2303.
[48] VAN DER SLUIS I M, DE LORENZO P, KOTECHA R S, et al. Blinatumomab added to chemotherapy in infant lymphoblastic leukemia[J]. N Engl J Med, 2023, 388(17): 1572-1581.
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