Proliferative Glomerulonephritis with Monoclonal Immunoglobulin G Lambda Deposits: Report of the First Pediatric Case

Proliferative glomerulonephritis with monoclonal immunoglobulin G deposits (PGNMID) is a recently described, uncommon renal disorder which is considered a monoclonal gammopathy of renal significance. Although some patients will have a detectable monoclonal spike, overt hematologic malignancy is foun...

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Main Authors: Jose Torrealba, Jyothsna Gattineni, Allen R. Hendricks
Format: Article
Language:English
Published: Karger Publishers 2018-04-01
Series:Case Reports in Nephrology and Dialysis
Subjects:
Online Access:https://www.karger.com/Article/FullText/488641
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author Jose Torrealba
Jyothsna Gattineni
Allen R. Hendricks
author_facet Jose Torrealba
Jyothsna Gattineni
Allen R. Hendricks
author_sort Jose Torrealba
collection DOAJ
description Proliferative glomerulonephritis with monoclonal immunoglobulin G deposits (PGNMID) is a recently described, uncommon renal disorder which is considered a monoclonal gammopathy of renal significance. Although some patients will have a detectable monoclonal spike, overt hematologic malignancy is found in only a minority. Most patients with PGNMID are over the age of 50 years, and to our knowledge no cases have been reported in children or adolescents. Renal biopsy shows variable histologic patterns by light microscopy, with membranoproliferative and membranous patterns being most common. Immunofluorescence microscopy demonstrates restriction to a single immunoglobulin G heavy chain isotype and a single light chain subtype. Electron microscopy reveals granular, unorganized deposits. We report a rare pediatric case which occurred in a 17-year-old female. The rarity of this entity in the adult population has not permitted a standard treatment regimen to be established. Our adolescent patient was treated with multiple treatment regimens including prednisone, mycophenolate mofetil, rituximab, bortezomib, and daratumumab. Our case demonstrates that awareness of this disorder by pediatric nephrologists and pathologists is vital to guide accurate disease classification, prognosis, and treatment.
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spelling doaj.art-26e30c13d021425f9421286d518006cf2022-12-22T02:44:23ZengKarger PublishersCase Reports in Nephrology and Dialysis2296-97052018-04-0181707510.1159/000488641488641Proliferative Glomerulonephritis with Monoclonal Immunoglobulin G Lambda Deposits: Report of the First Pediatric CaseJose TorrealbaJyothsna GattineniAllen R. HendricksProliferative glomerulonephritis with monoclonal immunoglobulin G deposits (PGNMID) is a recently described, uncommon renal disorder which is considered a monoclonal gammopathy of renal significance. Although some patients will have a detectable monoclonal spike, overt hematologic malignancy is found in only a minority. Most patients with PGNMID are over the age of 50 years, and to our knowledge no cases have been reported in children or adolescents. Renal biopsy shows variable histologic patterns by light microscopy, with membranoproliferative and membranous patterns being most common. Immunofluorescence microscopy demonstrates restriction to a single immunoglobulin G heavy chain isotype and a single light chain subtype. Electron microscopy reveals granular, unorganized deposits. We report a rare pediatric case which occurred in a 17-year-old female. The rarity of this entity in the adult population has not permitted a standard treatment regimen to be established. Our adolescent patient was treated with multiple treatment regimens including prednisone, mycophenolate mofetil, rituximab, bortezomib, and daratumumab. Our case demonstrates that awareness of this disorder by pediatric nephrologists and pathologists is vital to guide accurate disease classification, prognosis, and treatment.https://www.karger.com/Article/FullText/488641GlomerulonephritisMonoclonal immunoglobulinsImmunoglobulin G
spellingShingle Jose Torrealba
Jyothsna Gattineni
Allen R. Hendricks
Proliferative Glomerulonephritis with Monoclonal Immunoglobulin G Lambda Deposits: Report of the First Pediatric Case
Case Reports in Nephrology and Dialysis
Glomerulonephritis
Monoclonal immunoglobulins
Immunoglobulin G
title Proliferative Glomerulonephritis with Monoclonal Immunoglobulin G Lambda Deposits: Report of the First Pediatric Case
title_full Proliferative Glomerulonephritis with Monoclonal Immunoglobulin G Lambda Deposits: Report of the First Pediatric Case
title_fullStr Proliferative Glomerulonephritis with Monoclonal Immunoglobulin G Lambda Deposits: Report of the First Pediatric Case
title_full_unstemmed Proliferative Glomerulonephritis with Monoclonal Immunoglobulin G Lambda Deposits: Report of the First Pediatric Case
title_short Proliferative Glomerulonephritis with Monoclonal Immunoglobulin G Lambda Deposits: Report of the First Pediatric Case
title_sort proliferative glomerulonephritis with monoclonal immunoglobulin g lambda deposits report of the first pediatric case
topic Glomerulonephritis
Monoclonal immunoglobulins
Immunoglobulin G
url https://www.karger.com/Article/FullText/488641
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AT allenrhendricks proliferativeglomerulonephritiswithmonoclonalimmunoglobulinglambdadepositsreportofthefirstpediatriccase