Anti–Phospholipase A2 Receptor 1 and Anti–Cysteine Rich Antibodies, Domain Recognition and Rituximab Efficacy in Membranous Nephropathy: A Prospective Cohort Study

Proteinuria and anti–phospholipase A2 receptor 1 (anti-PLA2R1) antibody titers are associated with primary membranous nephropathy (MN) outcomes. We evaluated the association of antibodies against the cysteine-rich (CysR) and C-type lectin 1, 7, and 8 (CTLD1, CTLD7, and CTLD8) domains of PLA2R1 with...

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Veröffentlicht in:American journal of kidney diseases 2024-05, Vol.83 (5), p.588-600.e1
Hauptverfasser: Ruggenenti, Piero, Reinhard, Linda, Ruggiero, Barbara, Perna, Annalisa, Perico, Luca, Peracchi, Tobia, Fidone, Diego, Gennarini, Alessia, Benigni, Ariela, Cortinovis, Monica, Hoxha, Elion, Remuzzi, Giuseppe
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container_issue 5
container_start_page 588
container_title American journal of kidney diseases
container_volume 83
creator Ruggenenti, Piero
Reinhard, Linda
Ruggiero, Barbara
Perna, Annalisa
Perico, Luca
Peracchi, Tobia
Fidone, Diego
Gennarini, Alessia
Benigni, Ariela
Cortinovis, Monica
Hoxha, Elion
Remuzzi, Giuseppe
description Proteinuria and anti–phospholipase A2 receptor 1 (anti-PLA2R1) antibody titers are associated with primary membranous nephropathy (MN) outcomes. We evaluated the association of antibodies against the cysteine-rich (CysR) and C-type lectin 1, 7, and 8 (CTLD1, CTLD7, and CTLD8) domains of PLA2R1 with MN outcomes. Prospective cohort study. One-hundred-thirteen consecutive, consenting patients referred to the Nephology Unit of the Azienda-Socio-Sanitaria-Territoriale (ASST) Papa Giovanni XXIII (Bergamo, Italy) with PLA2R1-related, biopsy-proven MN whose persistent nephrotic syndrome (NS) was managed conservatively for>6 months and were monitored with serial evaluations of proteinuria, autoantibodies (by enzyme-linked immunosorbent assay), and clinical outcomes. Rituximab. Complete (proteinuria
doi_str_mv 10.1053/j.ajkd.2023.10.013
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We evaluated the association of antibodies against the cysteine-rich (CysR) and C-type lectin 1, 7, and 8 (CTLD1, CTLD7, and CTLD8) domains of PLA2R1 with MN outcomes. Prospective cohort study. One-hundred-thirteen consecutive, consenting patients referred to the Nephology Unit of the Azienda-Socio-Sanitaria-Territoriale (ASST) Papa Giovanni XXIII (Bergamo, Italy) with PLA2R1-related, biopsy-proven MN whose persistent nephrotic syndrome (NS) was managed conservatively for>6 months and were monitored with serial evaluations of proteinuria, autoantibodies (by enzyme-linked immunosorbent assay), and clinical outcomes. Rituximab. Complete (proteinuria<0.3g/24h) or partial (proteinuria≥0.3g/24h and<3.0g/24h with>50% reduction vs basal) NS remission. Univariable and multivariable Cox regression analyses. All patients had anti-CysR antibodies; 62 (54.9%) were multidomain recognizers. Anti-PLA2R1 and anti-CysR antibody titers were strongly correlated at baseline (P<0.001, r=0.934), 6 months (P<0.001, r=0.964), and 12 months (P<0.001, r=0.944). During a median follow-up of 37.1 (IQR, 20.3-56.9) months, 71 patients (62.8%) achieved either complete or partial remission of their NS. Lower baseline anti-PLA2R1 (HR, 0.997 [95% CI, 0.996-0.999], P=0.002) and anti-CysR [HR, 0.996 [95% CI, 0.993-0.998], P=0.001) titers were associated with a higher probability of remission, along with female sex, lower proteinuria, and lower serum creatinine levels (P<0.05 for all comparisons). Anti-CTLD antibodies were not associated with outcomes. At 6 and 12 months, compared to baseline, anti-PLA2R1 and anti-CysR antibody titers decreased more in patients progressing to partial or complete remission than in those without remission (P<0.05 for all comparisons). Observational design. In PLA2R1-related MN, anti-PLA2R1 and anti-CysR antibodies similarly predict rituximab efficacy independent of PLA2R1 domain recognition. The choice between these tests should be dictated by feasibility and costs. Evaluating anti-CTLD antibodies appears unnecessary. Primary membranous nephropathy (MN), a leading cause of nephrotic syndrome (NS) in adults, is an autoimmune disease caused by autoantibodies binding to the podocyte antigen phospholipase A2 receptor 1 (PLA2R1). We assessed whether the effects of anti-CD20 cytolytic therapy with the monoclonal antibody rituximab are associated with detection rates and levels of anti-PLA2R1 antibodies and antibodies against PLA2R1 domains such as cysteine-rich (CysR), and C-type lectin 1, 7, and 8 (CTLD1, 7, and 8), in patients with PLA2R1-related MN and persistent NS. The probability of rituximab-induced complete or partial NS remission was associated with baseline anti-PLA2R1 and anti-CysR antibody titers, but not with anti-CTLD1, 7 and 8 antibodies or multidomain recognition. Integrated evaluation of anti-PLA2R1 or anti-CysR antibodies with proteinuria and kidney function may play a role in monitoring the effects of rituximab in patients with PLA2R1-related NS and MN. [Display omitted]]]></description><identifier>ISSN: 0272-6386</identifier><identifier>ISSN: 1523-6838</identifier><identifier>EISSN: 1523-6838</identifier><identifier>DOI: 10.1053/j.ajkd.2023.10.013</identifier><identifier>PMID: 38151224</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Adult ; Aged ; Autoantibodies - blood ; Autoantibodies - immunology ; Cohort Studies ; CysR ; Cysteine ; domain recognition ; Female ; Glomerulonephritis, Membranous - drug therapy ; Glomerulonephritis, Membranous - immunology ; Humans ; Immunologic Factors - therapeutic use ; Male ; membranous nephropathy ; Middle Aged ; nephrotic syndrome ; PLA2R1 ; Prospective Studies ; Proteinuria - drug therapy ; Receptors, Phospholipase A2 - immunology ; rituximab ; Rituximab - therapeutic use ; sex ; Treatment Outcome</subject><ispartof>American journal of kidney diseases, 2024-05, Vol.83 (5), p.588-600.e1</ispartof><rights>2023 National Kidney Foundation, Inc.</rights><rights>Copyright © 2023 National Kidney Foundation, Inc. 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All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c356t-732ece94443b6ca721c404b14602309764238db1adecf0fc6c74cafd640017bb3</citedby><cites>FETCH-LOGICAL-c356t-732ece94443b6ca721c404b14602309764238db1adecf0fc6c74cafd640017bb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1053/j.ajkd.2023.10.013$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,45974</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38151224$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ruggenenti, Piero</creatorcontrib><creatorcontrib>Reinhard, Linda</creatorcontrib><creatorcontrib>Ruggiero, Barbara</creatorcontrib><creatorcontrib>Perna, Annalisa</creatorcontrib><creatorcontrib>Perico, Luca</creatorcontrib><creatorcontrib>Peracchi, Tobia</creatorcontrib><creatorcontrib>Fidone, Diego</creatorcontrib><creatorcontrib>Gennarini, Alessia</creatorcontrib><creatorcontrib>Benigni, Ariela</creatorcontrib><creatorcontrib>Cortinovis, Monica</creatorcontrib><creatorcontrib>Hoxha, Elion</creatorcontrib><creatorcontrib>Remuzzi, Giuseppe</creatorcontrib><title>Anti–Phospholipase A2 Receptor 1 and Anti–Cysteine Rich Antibodies, Domain Recognition and Rituximab Efficacy in Membranous Nephropathy: A Prospective Cohort Study</title><title>American journal of kidney diseases</title><addtitle>Am J Kidney Dis</addtitle><description><![CDATA[Proteinuria and anti–phospholipase A2 receptor 1 (anti-PLA2R1) antibody titers are associated with primary membranous nephropathy (MN) outcomes. We evaluated the association of antibodies against the cysteine-rich (CysR) and C-type lectin 1, 7, and 8 (CTLD1, CTLD7, and CTLD8) domains of PLA2R1 with MN outcomes. Prospective cohort study. One-hundred-thirteen consecutive, consenting patients referred to the Nephology Unit of the Azienda-Socio-Sanitaria-Territoriale (ASST) Papa Giovanni XXIII (Bergamo, Italy) with PLA2R1-related, biopsy-proven MN whose persistent nephrotic syndrome (NS) was managed conservatively for>6 months and were monitored with serial evaluations of proteinuria, autoantibodies (by enzyme-linked immunosorbent assay), and clinical outcomes. Rituximab. Complete (proteinuria<0.3g/24h) or partial (proteinuria≥0.3g/24h and<3.0g/24h with>50% reduction vs basal) NS remission. Univariable and multivariable Cox regression analyses. All patients had anti-CysR antibodies; 62 (54.9%) were multidomain recognizers. Anti-PLA2R1 and anti-CysR antibody titers were strongly correlated at baseline (P<0.001, r=0.934), 6 months (P<0.001, r=0.964), and 12 months (P<0.001, r=0.944). During a median follow-up of 37.1 (IQR, 20.3-56.9) months, 71 patients (62.8%) achieved either complete or partial remission of their NS. Lower baseline anti-PLA2R1 (HR, 0.997 [95% CI, 0.996-0.999], P=0.002) and anti-CysR [HR, 0.996 [95% CI, 0.993-0.998], P=0.001) titers were associated with a higher probability of remission, along with female sex, lower proteinuria, and lower serum creatinine levels (P<0.05 for all comparisons). Anti-CTLD antibodies were not associated with outcomes. At 6 and 12 months, compared to baseline, anti-PLA2R1 and anti-CysR antibody titers decreased more in patients progressing to partial or complete remission than in those without remission (P<0.05 for all comparisons). Observational design. In PLA2R1-related MN, anti-PLA2R1 and anti-CysR antibodies similarly predict rituximab efficacy independent of PLA2R1 domain recognition. The choice between these tests should be dictated by feasibility and costs. Evaluating anti-CTLD antibodies appears unnecessary. Primary membranous nephropathy (MN), a leading cause of nephrotic syndrome (NS) in adults, is an autoimmune disease caused by autoantibodies binding to the podocyte antigen phospholipase A2 receptor 1 (PLA2R1). We assessed whether the effects of anti-CD20 cytolytic therapy with the monoclonal antibody rituximab are associated with detection rates and levels of anti-PLA2R1 antibodies and antibodies against PLA2R1 domains such as cysteine-rich (CysR), and C-type lectin 1, 7, and 8 (CTLD1, 7, and 8), in patients with PLA2R1-related MN and persistent NS. The probability of rituximab-induced complete or partial NS remission was associated with baseline anti-PLA2R1 and anti-CysR antibody titers, but not with anti-CTLD1, 7 and 8 antibodies or multidomain recognition. Integrated evaluation of anti-PLA2R1 or anti-CysR antibodies with proteinuria and kidney function may play a role in monitoring the effects of rituximab in patients with PLA2R1-related NS and MN. [Display omitted]]]></description><subject>Adult</subject><subject>Aged</subject><subject>Autoantibodies - blood</subject><subject>Autoantibodies - immunology</subject><subject>Cohort Studies</subject><subject>CysR</subject><subject>Cysteine</subject><subject>domain recognition</subject><subject>Female</subject><subject>Glomerulonephritis, Membranous - drug therapy</subject><subject>Glomerulonephritis, Membranous - immunology</subject><subject>Humans</subject><subject>Immunologic Factors - therapeutic use</subject><subject>Male</subject><subject>membranous nephropathy</subject><subject>Middle Aged</subject><subject>nephrotic syndrome</subject><subject>PLA2R1</subject><subject>Prospective Studies</subject><subject>Proteinuria - drug therapy</subject><subject>Receptors, Phospholipase A2 - immunology</subject><subject>rituximab</subject><subject>Rituximab - therapeutic use</subject><subject>sex</subject><subject>Treatment Outcome</subject><issn>0272-6386</issn><issn>1523-6838</issn><issn>1523-6838</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kU2O1DAQhSMEYpqBC7BAXrIgjf_iJIhNqxl-pAFGDawtx64QN504YzsjsuMOHIJ7cRKc6YYlq5Kevld6VS_LHhO8Jrhgz_drtf9m1hRTloQ1JuxOtiIFZbmoWHU3W2Fa0lywSpxlD0LYY4xrJsT97IxVpCCU8lX2azNE-_vHz6vOhbFzBzuqAGhD0Q40jNF5RJAaDDph2zlEsAOgndXdrdg4YyE8Q69cr-yw2NzXwUbrhlvfzsbpu-1Vgy7a1mqlZ5So99A3Xg1uCugDjJ13o4rd_AJt0JVPOUBHewNo6zrnI_oUJzM_zO616hDg0WmeZ19eX3zevs0vP755t91c5poVIuYloyl3zTlnjdCqpERzzBvCRXoSrkvBKatMQ5QB3eJWC11yrVojOMakbBp2nj097h29u54gRNnboOFwUAOkuJLWuCS1KMo6ofSI6pQ5eGjl6NOlfpYEy6UguZdLQXIpaNFSQcn05LR_anow_yx_G0nAyyMA6cobC14GbWHQYKxPf5HG2f_t_wPWj6V7</recordid><startdate>202405</startdate><enddate>202405</enddate><creator>Ruggenenti, Piero</creator><creator>Reinhard, Linda</creator><creator>Ruggiero, Barbara</creator><creator>Perna, Annalisa</creator><creator>Perico, Luca</creator><creator>Peracchi, Tobia</creator><creator>Fidone, Diego</creator><creator>Gennarini, Alessia</creator><creator>Benigni, Ariela</creator><creator>Cortinovis, Monica</creator><creator>Hoxha, Elion</creator><creator>Remuzzi, Giuseppe</creator><general>Elsevier Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>202405</creationdate><title>Anti–Phospholipase A2 Receptor 1 and Anti–Cysteine Rich Antibodies, Domain Recognition and Rituximab Efficacy in Membranous Nephropathy: A Prospective Cohort Study</title><author>Ruggenenti, Piero ; Reinhard, Linda ; Ruggiero, Barbara ; Perna, Annalisa ; Perico, Luca ; Peracchi, Tobia ; Fidone, Diego ; Gennarini, Alessia ; Benigni, Ariela ; Cortinovis, Monica ; Hoxha, Elion ; Remuzzi, Giuseppe</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c356t-732ece94443b6ca721c404b14602309764238db1adecf0fc6c74cafd640017bb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Autoantibodies - blood</topic><topic>Autoantibodies - immunology</topic><topic>Cohort Studies</topic><topic>CysR</topic><topic>Cysteine</topic><topic>domain recognition</topic><topic>Female</topic><topic>Glomerulonephritis, Membranous - drug therapy</topic><topic>Glomerulonephritis, Membranous - immunology</topic><topic>Humans</topic><topic>Immunologic Factors - therapeutic use</topic><topic>Male</topic><topic>membranous nephropathy</topic><topic>Middle Aged</topic><topic>nephrotic syndrome</topic><topic>PLA2R1</topic><topic>Prospective Studies</topic><topic>Proteinuria - drug therapy</topic><topic>Receptors, Phospholipase A2 - immunology</topic><topic>rituximab</topic><topic>Rituximab - therapeutic use</topic><topic>sex</topic><topic>Treatment Outcome</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ruggenenti, Piero</creatorcontrib><creatorcontrib>Reinhard, Linda</creatorcontrib><creatorcontrib>Ruggiero, Barbara</creatorcontrib><creatorcontrib>Perna, Annalisa</creatorcontrib><creatorcontrib>Perico, Luca</creatorcontrib><creatorcontrib>Peracchi, Tobia</creatorcontrib><creatorcontrib>Fidone, Diego</creatorcontrib><creatorcontrib>Gennarini, Alessia</creatorcontrib><creatorcontrib>Benigni, Ariela</creatorcontrib><creatorcontrib>Cortinovis, Monica</creatorcontrib><creatorcontrib>Hoxha, Elion</creatorcontrib><creatorcontrib>Remuzzi, Giuseppe</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>American journal of kidney diseases</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ruggenenti, Piero</au><au>Reinhard, Linda</au><au>Ruggiero, Barbara</au><au>Perna, Annalisa</au><au>Perico, Luca</au><au>Peracchi, Tobia</au><au>Fidone, Diego</au><au>Gennarini, Alessia</au><au>Benigni, Ariela</au><au>Cortinovis, Monica</au><au>Hoxha, Elion</au><au>Remuzzi, Giuseppe</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Anti–Phospholipase A2 Receptor 1 and Anti–Cysteine Rich Antibodies, Domain Recognition and Rituximab Efficacy in Membranous Nephropathy: A Prospective Cohort Study</atitle><jtitle>American journal of kidney diseases</jtitle><addtitle>Am J Kidney Dis</addtitle><date>2024-05</date><risdate>2024</risdate><volume>83</volume><issue>5</issue><spage>588</spage><epage>600.e1</epage><pages>588-600.e1</pages><issn>0272-6386</issn><issn>1523-6838</issn><eissn>1523-6838</eissn><abstract><![CDATA[Proteinuria and anti–phospholipase A2 receptor 1 (anti-PLA2R1) antibody titers are associated with primary membranous nephropathy (MN) outcomes. We evaluated the association of antibodies against the cysteine-rich (CysR) and C-type lectin 1, 7, and 8 (CTLD1, CTLD7, and CTLD8) domains of PLA2R1 with MN outcomes. Prospective cohort study. One-hundred-thirteen consecutive, consenting patients referred to the Nephology Unit of the Azienda-Socio-Sanitaria-Territoriale (ASST) Papa Giovanni XXIII (Bergamo, Italy) with PLA2R1-related, biopsy-proven MN whose persistent nephrotic syndrome (NS) was managed conservatively for>6 months and were monitored with serial evaluations of proteinuria, autoantibodies (by enzyme-linked immunosorbent assay), and clinical outcomes. Rituximab. Complete (proteinuria<0.3g/24h) or partial (proteinuria≥0.3g/24h and<3.0g/24h with>50% reduction vs basal) NS remission. Univariable and multivariable Cox regression analyses. All patients had anti-CysR antibodies; 62 (54.9%) were multidomain recognizers. Anti-PLA2R1 and anti-CysR antibody titers were strongly correlated at baseline (P<0.001, r=0.934), 6 months (P<0.001, r=0.964), and 12 months (P<0.001, r=0.944). During a median follow-up of 37.1 (IQR, 20.3-56.9) months, 71 patients (62.8%) achieved either complete or partial remission of their NS. Lower baseline anti-PLA2R1 (HR, 0.997 [95% CI, 0.996-0.999], P=0.002) and anti-CysR [HR, 0.996 [95% CI, 0.993-0.998], P=0.001) titers were associated with a higher probability of remission, along with female sex, lower proteinuria, and lower serum creatinine levels (P<0.05 for all comparisons). Anti-CTLD antibodies were not associated with outcomes. At 6 and 12 months, compared to baseline, anti-PLA2R1 and anti-CysR antibody titers decreased more in patients progressing to partial or complete remission than in those without remission (P<0.05 for all comparisons). Observational design. In PLA2R1-related MN, anti-PLA2R1 and anti-CysR antibodies similarly predict rituximab efficacy independent of PLA2R1 domain recognition. The choice between these tests should be dictated by feasibility and costs. Evaluating anti-CTLD antibodies appears unnecessary. Primary membranous nephropathy (MN), a leading cause of nephrotic syndrome (NS) in adults, is an autoimmune disease caused by autoantibodies binding to the podocyte antigen phospholipase A2 receptor 1 (PLA2R1). We assessed whether the effects of anti-CD20 cytolytic therapy with the monoclonal antibody rituximab are associated with detection rates and levels of anti-PLA2R1 antibodies and antibodies against PLA2R1 domains such as cysteine-rich (CysR), and C-type lectin 1, 7, and 8 (CTLD1, 7, and 8), in patients with PLA2R1-related MN and persistent NS. The probability of rituximab-induced complete or partial NS remission was associated with baseline anti-PLA2R1 and anti-CysR antibody titers, but not with anti-CTLD1, 7 and 8 antibodies or multidomain recognition. Integrated evaluation of anti-PLA2R1 or anti-CysR antibodies with proteinuria and kidney function may play a role in monitoring the effects of rituximab in patients with PLA2R1-related NS and MN. [Display omitted]]]></abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>38151224</pmid><doi>10.1053/j.ajkd.2023.10.013</doi></addata></record>
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identifier ISSN: 0272-6386
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subjects Adult
Aged
Autoantibodies - blood
Autoantibodies - immunology
Cohort Studies
CysR
Cysteine
domain recognition
Female
Glomerulonephritis, Membranous - drug therapy
Glomerulonephritis, Membranous - immunology
Humans
Immunologic Factors - therapeutic use
Male
membranous nephropathy
Middle Aged
nephrotic syndrome
PLA2R1
Prospective Studies
Proteinuria - drug therapy
Receptors, Phospholipase A2 - immunology
rituximab
Rituximab - therapeutic use
sex
Treatment Outcome
title Anti–Phospholipase A2 Receptor 1 and Anti–Cysteine Rich Antibodies, Domain Recognition and Rituximab Efficacy in Membranous Nephropathy: A Prospective Cohort Study
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