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Related Experiment Video

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Murine Model of Leukemia Relapse to Induction Chemotherapy for Acute Lymphoblastic Leukemia
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Infant acute bilineal leukemia.

Katarzyna Derwich1, Lukasz Sedek, Claus Meyer

  • 1Department of Pediatric Hematology, Oncology and Haematopoietic Stem Cell Transplantation, University of Medical Sciences, Szpitalna 27/33, 60-572 Poznań, Poland. kderwich@poczta.onet.pl

Leukemia Research
|March 17, 2009
PubMed
Summary
This summary is machine-generated.

Acute bilineal leukemia (aBLL) is a rare, aggressive leukemia in infants, presenting with mixed myeloid and B-cell lineages. This case highlights the need for individualized treatment and close monitoring due to high relapse rates after stem cell transplant.

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Published on: September 18, 2013

Area of Science:

  • Pediatric Hematology Oncology
  • Molecular Diagnostics in Leukemia
  • Immunophenotyping of Acute Leukemia

Background:

  • Acute leukemias are typically classified into myeloid, B-cell, or T-cell lineages.
  • Acute biphenotypic leukemias (aBL) and acute bilineal leukemias (aBLL) represent rare subtypes with mixed or co-existing lineage characteristics.
  • MLL gene rearrangements are common in infant acute leukemias.

Observation:

  • A 10-month-old infant presented with de novo acute bilineal leukemia (aBLL).
  • The leukemic blasts exhibited characteristics of both monocytic and B-cell precursor lineages.
  • All leukemic cells shared an identical complex MLL gene rearrangement.

Findings:

  • The infant showed a poor initial response to standard acute lymphoblastic leukemia (ALL) and acute myeloid leukemia (AML) induction therapies.
  • The patient achieved complete remission post-hematopoietic stem cell transplant (HSCT) with minimal residual disease negativity.
  • A bone marrow relapse occurred 16 months post-HSCT, with all blasts displaying a pro-B-ALL immunophenotype.

Implications:

  • Acute bilineal leukemia (aBLL) is an aggressive pediatric leukemia requiring tailored treatment strategies.
  • Close monitoring is crucial, especially in infants under one year old, due to the high risk of relapse.
  • Understanding the immunophenotypic evolution post-treatment is vital for managing aBLL.