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IgD paraproteinemias

M Tichý1, F Matĕja, P Urban

  • 12nd Department of Medicine, Charles University, Hradec Králové, Czechoslovakia.

Neoplasma
|January 1, 1993
PubMed
Summary
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This study identified 9 cases of immunoglobulin D (IgD) paraproteins among 2038 samples, with all diagnosed as multiple myeloma. These rare IgD paraproteins were predominantly associated with lambda light chains.

Area of Science:

  • Hematology
  • Clinical Chemistry
  • Immunology

Background:

  • Paraproteinemias, including immunoglobulin D (IgD) types, are uncommon but significant in hematological diagnostics.
  • Understanding the prevalence and characteristics of rare paraproteins like IgD is crucial for accurate multiple myeloma diagnosis.

Purpose of the Study:

  • To determine the frequency of IgD paraproteins in a large cohort of paraproteinemic sera.
  • To characterize the clinical and laboratory features of patients with IgD paraproteins.

Main Methods:

  • Analysis of 2038 paraproteinemic serum samples.
  • Clinical diagnosis and laboratory evaluation of identified IgD paraprotein cases.

Main Results:

  • Nine cases (0.44%) of IgD paraproteins were identified in 2038 samples.

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  • All 9 patients were diagnosed with multiple myeloma; one case progressed to plasmocellular leukemia.
  • The mean age of patients was 58.5 years, with a mean IgD concentration of 6.7 g/l and proteinuria of 5.1 g/24 h.
  • Eight IgD paraproteins had lambda light chains, and one had kappa light chains.

    • Conclusions:

    • IgD paraproteins are rare, constituting 0.44% of paraproteinemic sera in this study.
    • IgD paraproteins are strongly associated with multiple myeloma and can present with aggressive disease progression.
    • The predominance of lambda light chains in IgD paraproteins warrants further investigation.