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Updated: Aug 9, 2026
Immunoglobulin Gene Sequence Analysis In Chronic Lymphocytic Leukemia: From Patient Material To Sequence Interpretation
Published on: November 26, 2018
[Immunologic classification used in typing of 68 cases of acute leukemias]
Xiu-Li Sun1, Mei-Yun Fang, Feng Jiang
1Department of Hematology, The First-Affiliated Hospital, Dalian Medical University, Dalian 116011, China.
Insights
Immunologic classification significantly improves acute leukemia diagnosis accuracy, correcting morphological misdiagnoses. This method is crucial for diagnosing special acute leukemia subtypes like acute unidentified leukemia.
Area of Science:
- Hematology
- Immunology
- Oncology
Background:
- Accurate typing of acute leukemia (AL) is essential for effective treatment.
- Morphological classification has limitations in diagnosing certain AL subtypes.
Purpose of the Study:
- To evaluate the diagnostic significance of immunologic classification in acute leukemia.
- To compare immunologic typing with morphological classification for AL diagnosis.
Main Methods:
- Classified 68 acute leukemia cases using both morphological and immunologic methods.
- Analyzed expression of specific lineage-associated antigens (CD13, CD33, CD14, CD7, HLA-DR) and CD34.
Main Results:
- Achieved a 94.1% consistency rate between morphological and immunologic classifications.
- Immunologic typing corrected 4 cases misdiagnosed morphologically.
- Identified specific antigen profiles for different acute myeloid leukemia (AML) subtypes (e.g., AML-M(3), AML-M(4), AML-M(5)) and found lineage-associated antigens in both myeloid and lymphoid leukemias.
Conclusions:
- Immunologic classification enhances the accuracy of acute leukemia diagnosis.
- Immunologic typing is indispensable for diagnosing challenging cases, including acute unidentified leukemia (AUL) and AML-M(0).
Abstract:
To evaluate the significance of immunologic classification for typing of acute leukemia (AL). 68 cases of AL were classified by morphologic and immunologic typings. The results showed that the consistency rate was 94.1% between morphology and immunology, and 4 morphologic misdiagnosed cases were corrected by immunology; CD13 and CD33 were special myeloid lineage-associated antigens; AML-M(3) was often CD34 low-expressed and HLA-DR-negative; CD14 was often expressed in AML-M(4) and M(5); lymphoid lineage-associated antigens (CD7) were easily found in ANLL, and myeloid lineage-associated antigens were also found in ALL. In conclusion, immunologic classification can improve the accuracy in acute leukemia diagnosis. The diagnosis of some special AL, such as acute unidentified leukemia (AUL), AML-M(0) and so on, must rely on immunologic classification.
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