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Ph1-positive acute leukemia.

A Raza, J Minowada, M Barcos

    European Journal of Cancer & Clinical Oncology
    |December 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

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    Ph1-positive acute leukemia (AL) cases show unique granules, distinct from Ph1-negative AL. This form of leukemia may be more resistant to chemotherapy and differs from chronic myelocytic leukemia (CML).

    Area of Science:

    • Hematology
    • Oncology
    • Cytogenetics

    Background:

    • Ph1-positive acute leukemia (AL) is a distinct subtype.
    • Understanding its unique characteristics is crucial for diagnosis and treatment.

    Purpose of the Study:

    • To describe the clinical and cytogenetic features of Ph1-positive acute leukemia.
    • To identify pathognomonic markers and compare Ph1-positive AL with Ph1-negative AL and chronic myelocytic leukemia (CML).

    Main Methods:

    • Case series analysis of 25 patients with Ph1-positive AL.
    • Cytogenetic studies for monitoring disease status.
    • Morphological examination of leukemic cells for specific granules.

    Main Results:

    • 13 cases of acute lymphocytic leukemia (ALL) and 12 of acute non-lymphocytic leukemia (ANLL) were identified.

    Related Experiment Videos

  • Unique coarse, pink, peroxidase-negative cytoplasmic granules were observed in 12 cases, potentially pathognomonic for Ph1-positive AL.
  • Some patients achieved Ph1-negative status during remission.
  • Ph1-positive AL demonstrated greater resistance to chemotherapy compared to Ph1-negative AL.

    • Conclusions:

    • Coarse, pink, peroxidase-negative granules are a potential diagnostic marker for Ph1-positive acute leukemia.
    • Ph1-positive AL presents differently and responds less favorably to chemotherapy than Ph1-negative AL.
    • While sharing the Ph1 translocation with CML, Ph1-positive AL differs in age of onset and therapeutic response.