Serum beta 2-microglobulin in acute and chronic leukaemia

Area of Science:

• Hematology
• Clinical Chemistry
• Oncology

Background:

• Beta 2-microglobulin (beta 2-m) is a protein found on the surface of most nucleated cells.
• Elevated serum beta 2-m levels have been associated with various hematologic malignancies.

Purpose of the Study:

• To investigate the diagnostic and prognostic value of serum beta 2-m in patients with lymphoproliferative and myeloproliferative disorders.
• To assess the correlation between serum beta 2-m levels and disease characteristics, including cell infiltration and lymphocyte count.

Main Methods:

• Serum beta 2-m concentrations were measured in 69 patients diagnosed with acute or chronic lympho- and myeloproliferative disorders.
• Data were analyzed for correlations with disease type, clinical parameters, and treatment response.

Main Results:

• Significantly elevated serum beta 2-m was observed in most patients with chronic lymphatic leukemia (12/14), chronic granulocytic leukemia (11/11), and various acute leukemias (21/30).
• In chronic lymphatic leukemia, serum beta 2-m correlated positively with tissue infiltration and inversely with circulating lymphocyte count.
• Cytostatic treatment led to decreased serum beta 2-m, but normalization was not achieved.

Conclusions:

• Serum beta 2-m may serve as a marker for leukaemic cell mass and turnover in chronic leukemias.
• Repeated beta 2-m measurements could be valuable for estimating residual leukaemic cell burden after therapy in chronic leukemia.
• The clinical utility of serum beta 2-m determination appears limited in acute leukemias.