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Chromosomes in acute leukemia.

E L Prigogina, E W Fleischman, G P Puchkova

    Human Genetics
    |January 1, 1979
    PubMed
    Summary

    Chromosomal abnormalities are common in acute leukemia, affecting 72% of patients studied. Specific chromosome rearrangements, like t(8;21) in acute myeloid leukemia and t(4;11) in acute lymphoblastic leukemia, were frequently observed.

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    Area of Science:

    • Hematology
    • Cytogenetics
    • Oncology

    Background:

    • Acute leukemias, including acute myeloid leukemia (AML) and acute lymphoblastic leukemia (ALL), are characterized by genetic alterations.
    • Karyotyping is a crucial diagnostic tool for identifying chromosomal abnormalities in leukemia.

    Purpose of the Study:

    • To investigate the karyotypic abnormalities in a cohort of acute leukemia patients.
    • To identify frequently involved chromosomes and specific recurrent rearrangements in both AML and ALL.

    Main Methods:

    • G-banding technique was employed to analyze the chromosomes of leukemic cells.
    • Karyotype analysis was performed on 78 patients with acute leukemia (37 AML, 34 ALL, 7 unknown).

    Main Results:

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    • Chromosomal abnormalities were detected in 50 out of 78 patients (72%).
    • Chromosomes 8, 21, 5, 7, 11, and 19 were preferentially involved in these abnormalities.
    • The characteristic t(8;21) translocation was observed in 6 of 22 AML patients, and t(4;11) translocation in 4 of 34 ALL patients.

    Conclusions:

    • Karyotypic abnormalities are prevalent in acute leukemia.
    • Specific chromosomal rearrangements, such as t(8;21) in AML and t(4;11) in ALL, are significant findings that may aid in diagnosis and prognosis.