MYD88‐mutated Lymphoplasmacytic Lymphoma With Monoclonal Immunoglobulin G: A Case Report

ABSTRACT Lymphoplasmacytic lymphomas (LPL) are usually associated with serum monoclonal immunoglobulin M (IgM). Nevertheless, in some cases, these cells may secrete IgA or IgG monoclonal proteins or remain non‐secretory. We report a case from a patient with LPL‐secreting IgG who developed anaemia an...

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Main Authors: Morten Yung Isaksen, Olav Karsten Vintermyr, Håkon Reikvam
Format: Article
Language:English
Published: Wiley 2025-04-01
Series:eJHaem
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Online Access:https://doi.org/10.1002/jha2.70027
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author Morten Yung Isaksen
Olav Karsten Vintermyr
Håkon Reikvam
author_facet Morten Yung Isaksen
Olav Karsten Vintermyr
Håkon Reikvam
author_sort Morten Yung Isaksen
collection DOAJ
description ABSTRACT Lymphoplasmacytic lymphomas (LPL) are usually associated with serum monoclonal immunoglobulin M (IgM). Nevertheless, in some cases, these cells may secrete IgA or IgG monoclonal proteins or remain non‐secretory. We report a case from a patient with LPL‐secreting IgG who developed anaemia and splenomegaly during the disease course that necessitated treatment with bortezomib, dexamethasone, and rituximab. The case illustrates the need for clinicians and pathologists to consider LPLs as a differential diagnosis also without a serum monoclonal IgM. Clinical Trial Registration: The authors have confirmed clinical trial registration is not needed for this submission.
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publisher Wiley
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spelling doaj-art-4ad73edcede04a3db5ec710b4d514f9b2025-08-20T02:18:28ZengWileyeJHaem2688-61462025-04-0162n/an/a10.1002/jha2.70027MYD88‐mutated Lymphoplasmacytic Lymphoma With Monoclonal Immunoglobulin G: A Case ReportMorten Yung Isaksen0Olav Karsten Vintermyr1Håkon Reikvam2Department of Medicine Haukeland University Hospital Bergen NorwayDepartment of Pathology Haukeland University Hospital Bergen NorwayDepartment of Medicine Haukeland University Hospital Bergen NorwayABSTRACT Lymphoplasmacytic lymphomas (LPL) are usually associated with serum monoclonal immunoglobulin M (IgM). Nevertheless, in some cases, these cells may secrete IgA or IgG monoclonal proteins or remain non‐secretory. We report a case from a patient with LPL‐secreting IgG who developed anaemia and splenomegaly during the disease course that necessitated treatment with bortezomib, dexamethasone, and rituximab. The case illustrates the need for clinicians and pathologists to consider LPLs as a differential diagnosis also without a serum monoclonal IgM. Clinical Trial Registration: The authors have confirmed clinical trial registration is not needed for this submission.https://doi.org/10.1002/jha2.70027anaemia | case report | lymphoplasmacytic lymphoma | monoclonal IgG | MYD88 mutation
spellingShingle Morten Yung Isaksen
Olav Karsten Vintermyr
Håkon Reikvam
MYD88‐mutated Lymphoplasmacytic Lymphoma With Monoclonal Immunoglobulin G: A Case Report
eJHaem
anaemia | case report | lymphoplasmacytic lymphoma | monoclonal IgG | MYD88 mutation
title MYD88‐mutated Lymphoplasmacytic Lymphoma With Monoclonal Immunoglobulin G: A Case Report
title_full MYD88‐mutated Lymphoplasmacytic Lymphoma With Monoclonal Immunoglobulin G: A Case Report
title_fullStr MYD88‐mutated Lymphoplasmacytic Lymphoma With Monoclonal Immunoglobulin G: A Case Report
title_full_unstemmed MYD88‐mutated Lymphoplasmacytic Lymphoma With Monoclonal Immunoglobulin G: A Case Report
title_short MYD88‐mutated Lymphoplasmacytic Lymphoma With Monoclonal Immunoglobulin G: A Case Report
title_sort myd88 mutated lymphoplasmacytic lymphoma with monoclonal immunoglobulin g a case report
topic anaemia | case report | lymphoplasmacytic lymphoma | monoclonal IgG | MYD88 mutation
url https://doi.org/10.1002/jha2.70027
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AT olavkarstenvintermyr myd88mutatedlymphoplasmacyticlymphomawithmonoclonalimmunoglobulingacasereport
AT hakonreikvam myd88mutatedlymphoplasmacyticlymphomawithmonoclonalimmunoglobulingacasereport