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Treatment of Relapsed and/or Refractory AQP4-IgG Seropositive NMOSD by Tandem CAR T Cells Targeting CD19 and CD20

NCT03605238 · Status: WITHDRAWN · Phase: PHASE1 · Type: INTERVENTIONAL

Last updated 2019-09-19

No results posted yet for this study

Summary

CAR-T therapy was proposed and has been recently used for cancer treatment. It has been hailed for its promising remission rates after early stage clinical trials for acute lymphoblastic leukemia. However, CAR-T therapy is seldom used for autoimmune diseases. Researchers only use it for the treatment of systemic lupus erythematosus (SLE). Neuromyelitis optica spectrum disorders (NMOSD), that include the neuromyelitis optica (NMO), are a group of inflammatory disorders of the central nervous system characterized by episodes of immune-mediated demyelination and axonal damage mainly involving optic nerves and spinal cord. NMO is characterized by the presence of an anti-Aquaporin-4 (AQP4) antibody, which can only be produced by differentiation of B cells to plasma cells. Because these anti-AQP4 antibodies may be pathogenic, B cells recognizing AQP4 may be directly involved in the disease process as well. B cells also play a role as potent antigen presenting cells in NMO. NMO has the characteristics of high recurrence rate and poor prognosis. In the conventional treatment options, NMOSD could be treated with corticosteroids and immunosuppressive drugs immunosuppressant (e.g. azathioprine, mycophenolate mofetil, rituximab). But these drugs could barely completely cure NMOSD. And now, chimeric antigen receptor modified T cell infusion maybe an effective treatment to solve these problems. The rationale for using CAR-T therapy in NMOSD is based on the known roles of B cells, antibody production and plasma cells in the pathophysiology of NMOSD. The strongest evidence of the importance of B cells in NMO comes from studies of B cell depletion, most commonly with anti-CD20 monoclonal antibody, rituximab. Emerging evidence indicates that peripheral B cells are activated during a relapse and plasmablast production of anti-AQP4 antibodies spikes. The investigators infuse tanCART19/20 to completely deplete B cells. The purpose of this study is to assess the safety and efficacy of this tanCART19/20 in the treatment of NMOSD.

Conditions

Interventions

BIOLOGICAL

Corticosteroids & tanCART19/20

Twelve days of high-dose IV methylprednisolone (1000mg×3 days, 500mg×3 days, 240mg×3 days, 120mg×3 days) before anti-CD19/20 CAR T cells infusion. The dose is 1E5\~2E6 anti-CD19/20-CAR positive T cells. The cells infusion process may last for 30 min.

Sponsors & Collaborators

  • Chinese PLA General Hospital

    lead OTHER

Principal Investigators

  • Quangang Xu, PhD · Chinese PLA General Hospital

  • Huanfen Zhou, PhD · Chinese PLA General Hospital

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
12 Years
Max Age
75 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2018-08-15
Primary Completion
2019-08-15
Completion
2020-08-15

Countries

  • China

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03605238 on ClinicalTrials.gov