Weijia Wang, Shanzhi He, Wenli Zhang, Hongyu Zhang, Vincent M DeStefano, Masayuki Wada, Kevin Pinz, Greg Deener, Darshi Shah, Nabil Hagag, Min Wang, Ming Hong, Ronghao Zeng, Ting Lan, Yu Ma, Fugui Li, Yingwen Liang, Zhencong Guo, Chanjuan Zou, Mingxia Wang, Ling Ding, Yupo Ma, Yong Yuan
{"title":"BCMA-CD19 compound CAR T cells for systemic lupus erythematosus: a phase 1 open-label clinical trial.","authors":"Weijia Wang, Shanzhi He, Wenli Zhang, Hongyu Zhang, Vincent M DeStefano, Masayuki Wada, Kevin Pinz, Greg Deener, Darshi Shah, Nabil Hagag, Min Wang, Ming Hong, Ronghao Zeng, Ting Lan, Yu Ma, Fugui Li, Yingwen Liang, Zhencong Guo, Chanjuan Zou, Mingxia Wang, Ling Ding, Yupo Ma, Yong Yuan","doi":"10.1136/ard-2024-225785","DOIUrl":null,"url":null,"abstract":"<p><strong>Objectives: </strong>This study aims to evaluate the safety and efficacy of BCMA-CD19 compound chimeric antigen receptor T cells (cCAR) to dual reset the humoral and B cell immune system in patients with systemic lupus erythematosus (SLE) with lupus nephritis (LN).</p><p><strong>Methods: </strong>This is a single-arm open-label multicentre phase 1 study of BCMA and CD19-directed cCAR in patients suffering from SLE/LN with autoantibodies produced by B cells and plasma/long-lived plasma cells. In this clinical trial, we sequentially assigned biopsy-confirmed (classes III-V) LN patients to receive 3×10<sup>6</sup> cCAR cells/kg postcessation of all SLE medications and conditioning. The primary endpoint of safety and toxicity was assessed. Complete immune reset was indicated by B cell receptor (BCR) deep sequencing and flow cytometry analysis. Patient 11 (P11) had insufficient lymphocyte counts and was underdosed as compassionate use.</p><p><strong>Results: </strong>P1 and P2 achieved symptom and medication-free remission (MFR) from SLE and complete remission from lymphoma. P3-P13 (excluding P11) received an initial dose of 3×10<sup>6</sup> cCAR cells /kg and were negative for all autoantibodies, including those derived from long-lived plasma cells, 3 months post-cCAR and the complement returned to normal levels. These patients achieved symptom and MFR with post-cCAR follow-up to 46 months. Complete recovery of B cells was seen in 2-6 months post-cCAR. Mean SLE Disease Activity Index 2000 reduced from 10.6 (baseline) to 2.7 (3 months), and renal function significantly improved in 10 LN patients ≤90 days post-cCAR. cCAR T therapy was well tolerant with mild cytokine-release syndrome.</p><p><strong>Conclusions: </strong>Data suggest that cCAR therapy was safe and effective in inducing MFR and depleting disease-causing autoantibodies in patients with SLE.</p>","PeriodicalId":8087,"journal":{"name":"Annals of the Rheumatic Diseases","volume":null,"pages":null},"PeriodicalIF":20.3000,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annals of the Rheumatic Diseases","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1136/ard-2024-225785","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"RHEUMATOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Objectives: This study aims to evaluate the safety and efficacy of BCMA-CD19 compound chimeric antigen receptor T cells (cCAR) to dual reset the humoral and B cell immune system in patients with systemic lupus erythematosus (SLE) with lupus nephritis (LN).
Methods: This is a single-arm open-label multicentre phase 1 study of BCMA and CD19-directed cCAR in patients suffering from SLE/LN with autoantibodies produced by B cells and plasma/long-lived plasma cells. In this clinical trial, we sequentially assigned biopsy-confirmed (classes III-V) LN patients to receive 3×106 cCAR cells/kg postcessation of all SLE medications and conditioning. The primary endpoint of safety and toxicity was assessed. Complete immune reset was indicated by B cell receptor (BCR) deep sequencing and flow cytometry analysis. Patient 11 (P11) had insufficient lymphocyte counts and was underdosed as compassionate use.
Results: P1 and P2 achieved symptom and medication-free remission (MFR) from SLE and complete remission from lymphoma. P3-P13 (excluding P11) received an initial dose of 3×106 cCAR cells /kg and were negative for all autoantibodies, including those derived from long-lived plasma cells, 3 months post-cCAR and the complement returned to normal levels. These patients achieved symptom and MFR with post-cCAR follow-up to 46 months. Complete recovery of B cells was seen in 2-6 months post-cCAR. Mean SLE Disease Activity Index 2000 reduced from 10.6 (baseline) to 2.7 (3 months), and renal function significantly improved in 10 LN patients ≤90 days post-cCAR. cCAR T therapy was well tolerant with mild cytokine-release syndrome.
Conclusions: Data suggest that cCAR therapy was safe and effective in inducing MFR and depleting disease-causing autoantibodies in patients with SLE.
期刊介绍:
Annals of the Rheumatic Diseases (ARD) is an international peer-reviewed journal covering all aspects of rheumatology, which includes the full spectrum of musculoskeletal conditions, arthritic disease, and connective tissue disorders. ARD publishes basic, clinical, and translational scientific research, including the most important recommendations for the management of various conditions.