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Acute non-lymphocytic leukemia with t(16;21)

M C Nobbs1, D Chan-Lam, R T Howell

  • 1South Western Regional Cytogenetics Centre, Southmead Hospital, Bristol, U.K.

Cancer Genetics and Cytogenetics
|October 15, 1993
PubMed
Summary

A patient diagnosed with acute myeloid leukemia (AML) showed a specific chromosomal translocation, t(16;21), and an extra copy of chromosome 10. This rare AML genetic finding is discussed in relation to disease characteristics.

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Area of Science:

  • Hematology
  • Cytogenetics
  • Oncology

Background:

  • Acute myeloid leukemia (AML) is a heterogeneous hematologic malignancy.
  • Cytogenetic abnormalities are crucial for AML classification and prognosis.
  • The FAB M1 subtype of AML is characterized by myeloid blasts with minimal maturation.

Observation:

  • A case of acute myeloid leukemia, FAB subtype M1, presented with a novel chromosomal abnormality: a translocation between chromosomes 16 and 21, specifically t(16;21)(p11;q22).
  • The patient also exhibited trisomy 10, indicating an extra copy of chromosome 10.

Findings:

  • The t(16;21) translocation has been previously documented in 12 other cases of acute myeloid leukemia (AML).
  • This translocation has been observed across various AML subtypes, suggesting a potential role in leukemogenesis.

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  • The study discusses the relationship between this specific translocation and the overall disease profile in AML patients.

    • Implications:

    • Understanding the significance of t(16;21) in AML can refine diagnostic and prognostic strategies.
    • Further research into the molecular mechanisms underlying t(16;21) may reveal therapeutic targets.
    • This case contributes to the growing body of knowledge on cytogenetic alterations in acute myeloid leukemia.