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  2. Monoclonal gammopathy - Wikipedia

    en.wikipedia.org/wiki/Monoclonal_gammopathy

    Monoclonal gammopathy, also known as paraproteinemia, is the presence of excessive amounts of myeloma protein or monoclonal gamma globulin in the blood. It is usually due to an underlying immunoproliferative disorder or hematologic neoplasms, especially multiple myeloma. It is sometimes considered equivalent to plasma cell dyscrasia.

  3. Immunoglobulin light chain - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_light_chain

    The immunoglobulin light chain genes in tetrapods can be classified into three distinct groups: kappa (κ), lambda (λ), and sigma (σ). The divergence of the κ, λ, and σ isotypes preceded the radiation of tetrapods. The σ isotype was lost after the evolution of the amphibian lineage and before the emergence of the reptilian lineage.

  4. Myeloma protein - Wikipedia

    en.wikipedia.org/wiki/Myeloma_protein

    Serum protein electrophoresis showing a paraprotein (spike/peak in the gamma zone) in a patient with multiple myeloma.. A myeloma protein is an abnormal antibody (immunoglobulin) or (more often) a fragment thereof, such as an immunoglobulin light chain, that is produced in excess by an abnormal monoclonal proliferation of plasma cells, typically in multiple myeloma or Monoclonal gammopathy of ...

  5. Monoclonal gammopathy of undetermined significance - Wikipedia

    en.wikipedia.org/wiki/Monoclonal_gammopathy_of...

    Monoclonal gammopathy of undetermined significance (MGUS) is a plasma cell dyscrasia in which plasma cells or other types of antibody-producing cells secrete a myeloma protein, i.e. an abnormal antibody, into the blood; this abnormal protein is usually found during standard laboratory blood or urine tests.

  6. Plasma cell dyscrasias - Wikipedia

    en.wikipedia.org/wiki/Plasma_cell_dyscrasias

    Individuals diagnosed with light chain MGUS typically do not express detectable levels of an IgG, IgA, IgD, IgE, or IgM intact myeloma protein in their blood. Rather, they overexpress a monoclonal, aberrant free κ (i.e. kappa) or λ (i.e., lambda) immunoglobulin light chain. For diagnosis, the κ and λ free light chains are quantified by ...

  7. Serum protein electrophoresis - Wikipedia

    en.wikipedia.org/wiki/Serum_protein_electrophoresis

    Serum protein electrophoresis (SPEP or SPE) is a laboratory test that examines specific proteins in the blood called globulins. [1] The most common indications for a serum protein electrophoresis test are to diagnose or monitor multiple myeloma , a monoclonal gammopathy of uncertain significance (MGUS), or further investigate a discrepancy ...