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Updated: Jul 29, 2025

Analyses of Proteinuria, Renal Infiltration of Leukocytes, and Renal Deposition of Proteins in Lupus-prone MRL/lpr Mice
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Analyses of Proteinuria, Renal Infiltration of Leukocytes, and Renal Deposition of Proteins in Lupus-prone MRL/lpr Mice

Published on: June 8, 2022

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Monoclonal gammopathies of renal significance

Sahana Gnanasampanthan1, Andreas Kousios2

  • 1Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK.

Clinical Medicine (London, England)
|May 26, 2023
PubMed

Insights

Monoclonal gammopathies of renal significance (MGRS) are kidney diseases caused by toxic proteins from abnormal B-cells or plasma cells. This review clarifies MGRS diagnosis and treatment for general physicians.

Area of Science:

  • Nephrology
  • Hematology
  • Immunology

Background:

  • Monoclonal gammopathies of renal significance (MGRS) are defined by specific renal histopathological lesions.
  • These lesions stem from nephrotoxic monoclonal immunoglobulins produced by small B-cell or plasma cell clones.
  • MGRS clones do not meet diagnostic criteria for multiple myeloma or malignant lymphoma.

Approach:

  • This review synthesizes current understanding of MGRS definition and terminology.
  • It elaborates on the diagnostic pathway for MGRS.
  • Treatment principles for MGRS are discussed from a general physician's viewpoint.

Key Points:

  • MGRS definition hinges on nephrotoxic monoclonal immunoglobulins and specific B-cell/plasma cell clones.
  • Distinguishing MGRS from other plasma cell disorders is crucial for appropriate management.
  • A systematic diagnostic approach is essential for timely identification and treatment.

Conclusions:

  • Accurate definition and terminology are foundational for understanding MGRS.
  • General physicians play a key role in the initial diagnosis and management of MGRS.
  • Effective treatment strategies are vital to improve renal outcomes in MGRS patients.
Keywords:
Bence-jones proteinParaprotein-related renal diseasechronic kidney diseasemonoclonal gammopathies of renal significancemonoclonal immunoglobulins

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