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Related Experiment Videos

Positive Coombs test in acute leukaemia.

P Solal-Celigny, R Vazeux, M Vroclans

    British Journal of Haematology
    |August 1, 1984
    PubMed
    Summary

    In acute leukaemia patients, 13% showed a positive Coombs test at diagnosis, often linked to anti-I antibodies. These immunohaematological abnormalities did not correlate with leukaemia subtype or clinical course.

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    Area of Science:

    • Hematology
    • Immunology
    • Oncology

    Background:

    • Acute leukaemia is a heterogeneous group of blood cancers.
    • Immunohaematological abnormalities can occur in patients with malignancies.
    • The Coombs test is a key diagnostic tool for detecting antibody-mediated red blood cell destruction.

    Purpose of the Study:

    • To investigate the prevalence and characteristics of immunohaematological abnormalities in patients with acute leukaemia.
    • To determine the association between these abnormalities and clinical parameters of the disease.

    Main Methods:

    • Prospective study of unselected acute leukaemia patients.
    • Performance of immunohaematological tests, including Coombs testing, at diagnosis and during follow-up.
    • Elution of antibodies from patient red blood cells (RBCs) for identification.

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    Main Results:

    • Thirteen of 112 (11.6%) patients had a positive Coombs test at diagnosis.
    • Six additional patients developed a positive Coombs test during remission.
    • All positive Coombs tests were complement-type, with anti-I antibodies identified in 11 cases.
    • No correlation was found between immunohaematological findings and FAB subtype, other immune issues, or disease course.

    Conclusions:

    • Complement-mediated Coombs positivity, often with anti-I antibodies, is observed in a subset of acute leukaemia patients.
    • These immunohaematological findings appear independent of leukaemia morphology and clinical progression.