IgA vasculitis with underlying monoclonal IgA gammopathy : innovative therapeutic approach targeting plasma cells. A case series
© 2022. The Author(s), under exclusive licence to International League of Associations for Rheumatology (ILAR)..
OBJECTIVE: There is currently no evidence of the possible benefit of plasma cell-targeting therapies (PCTT) in immunoglobulin A (IgA) monoclonal gammopathy (MG) associated with IgA vasculitis (IgAV). We report the outcome of different PCTT regimens in a cohort of MG-IgAV.
METHODS: We used a French network to retrospectively describe the outcome of MG-IgAV patients treated with PCTT.
RESULTS: Five patients were included (mean age 65 years). All patients had severe baseline presentation including extensive necrotic purpura (n = 5), gastrointestinal involvement (n = 2), peripheral neuropathies (n = 2), and glomerulonephritis (n = 1). Two patients had IgA indolent multiple myeloma and three had IgA "MG of undetermined significance." Monotypic IgA deposition in the skin vessels wall was highlighted using an immunofluorescence assay. Cases of vasculitis in three patients (n = 3) were refractory to multiple line therapies, including cyclophosphamide (n = 3) or rituximab. Finally, PCTT including bortezomib plus cyclophosphamide and dexamethasone, bortezomib plus melphalan and prednisone, or bortezomib plus lenalidomide and dexamethasone were proposed, allowing complete remission in 4/5 patients without major adverse drug events.
CONCLUSION: This study suggests that the MG-IgAV phenotype might be distinctive of usual IgAV (severe and refractory to conventional immunosuppressive regimens) and supports the benefit of PCTT. This study sheds new light on the overall biology of IgAV, strengthening the pathogenic role of the monoclonal IgA component in IgAV.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:41 |
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| Enthalten in: |
Clinical rheumatology - 41(2022), 10 vom: 17. Okt., Seite 3119-3123 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Hankard, Antoine [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 22.09.2022 Date Revised 22.09.2022 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1007/s10067-022-06181-4 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 245 | 1 | 0 | |a IgA vasculitis with underlying monoclonal IgA gammopathy |b innovative therapeutic approach targeting plasma cells. A case series |
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| 500 | |a Date Revised 22.09.2022 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2022. The Author(s), under exclusive licence to International League of Associations for Rheumatology (ILAR). | ||
| 520 | |a OBJECTIVE: There is currently no evidence of the possible benefit of plasma cell-targeting therapies (PCTT) in immunoglobulin A (IgA) monoclonal gammopathy (MG) associated with IgA vasculitis (IgAV). We report the outcome of different PCTT regimens in a cohort of MG-IgAV | ||
| 520 | |a METHODS: We used a French network to retrospectively describe the outcome of MG-IgAV patients treated with PCTT | ||
| 520 | |a RESULTS: Five patients were included (mean age 65 years). All patients had severe baseline presentation including extensive necrotic purpura (n = 5), gastrointestinal involvement (n = 2), peripheral neuropathies (n = 2), and glomerulonephritis (n = 1). Two patients had IgA indolent multiple myeloma and three had IgA "MG of undetermined significance." Monotypic IgA deposition in the skin vessels wall was highlighted using an immunofluorescence assay. Cases of vasculitis in three patients (n = 3) were refractory to multiple line therapies, including cyclophosphamide (n = 3) or rituximab. Finally, PCTT including bortezomib plus cyclophosphamide and dexamethasone, bortezomib plus melphalan and prednisone, or bortezomib plus lenalidomide and dexamethasone were proposed, allowing complete remission in 4/5 patients without major adverse drug events | ||
| 520 | |a CONCLUSION: This study suggests that the MG-IgAV phenotype might be distinctive of usual IgAV (severe and refractory to conventional immunosuppressive regimens) and supports the benefit of PCTT. This study sheds new light on the overall biology of IgAV, strengthening the pathogenic role of the monoclonal IgA component in IgAV | ||
| 650 | 4 | |a Journal Article | |
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