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Pre-and post-HSCT use of TKI therapy for fusion-driven B-ALL: A case series of five pediatric, adolescent and young adult patients.

Authors
  • Shumock, Savannah
  • Temple, William
  • Marinoff, Amanda
  • Aaronson, Kathryn
  • Southworth, Erica
  • Xirenayi, Simayijiang
  • Lee, Alex
  • Leung, Stanley
  • Sweet-Cordero, E
  • Hermiston, Michelle
  • Stieglitz, Elliot
  • Higham, Christine
Publication Date
Dec 01, 2023
Source
eScholarship - University of California
Keywords
License
Unknown
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Abstract

BACKGROUND: The development of tyrosine kinase inhibitors (TKIs) has significantly improved survival rates among patients with Philadelphia chromosome (Ph+) B cell acute lymphoblastic leukemia (B-ALL). Ph-like B-ALL patients lack the BCR::ABL1 translocation but share gene expression profiles with Ph+ B-ALL. The role of TKIs for Ph-like patients pre- and post-hematopoietic stem cell transplantation (HSCT) is not yet clear. CASE: Here we present five cases of pediatric, adolescent, and young adult patients who presented with Ph-like B-ALL or CML in B-ALL blast phase who were treated with personalized TKI regimens pre- and post-HSCT. CONCLUSION: This report describes several novel Ph-like fusions as well as combinations of TKIs with chemotherapy or immunotherapy not yet reported in the pediatric population. This case series provides real-world experience highlighting the potential application of pre- and post-HSCT use of TKIs in a subset of patients with targetable fusions.

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