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Related Experiment Videos

Double light-chain disease: a case report.

F R Dalal, S Winsten

    Clinical Chemistry
    |January 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    This study reports a rare case of double light-chain disease, where both lambda and kappa monoclonal light chains were found in a patient with multiple myeloma. These distinct proteins were separate from whole molecule immunoglobulins.

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    Area of Science:

    • Nephrology
    • Immunology
    • Hematology

    Background:

    • Massive proteinuria can indicate underlying kidney disease.
    • Monoclonal gammopathies, including multiple myeloma, are associated with abnormal protein production.

    Observation:

    • A patient presented with significant proteinuria.
    • Immunological analysis revealed the presence of both lambda and kappa monoclonal light chains in the urine.
    • These light chains were found to be distinct and not part of intact immunoglobulins (IgG, IgM, IgA, IgD, IgE).

    Findings:

    • The patient was diagnosed with double light-chain disease, a rare condition characterized by the co-existence of two distinct monoclonal light chains.
    • Column chromatography confirmed the unique nature of these separate light chain proteins.

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  • Clinical correlation identified multiple myeloma as the underlying cause.

    • Implications:

    • This case highlights the diagnostic complexity of proteinuria and monoclonal gammopathies.
    • Understanding double light-chain disease is crucial for accurate diagnosis and management of multiple myeloma.
    • Further research into the pathogenesis of producing distinct monoclonal light chains may offer new therapeutic targets.