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Updated: Dec 13, 2025

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Inebilizumab: First Approval.

James E Frampton1

  • 1Springer Nature, Mairangi Bay, Private Bag 65901, Auckland, 0754, New Zealand. dru@adis.com.

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Summary
This summary is machine-generated.

Inebilizumab is a new B-cell depleting therapy approved for neuromyelitis optica spectrum disorder. This humanized monoclonal antibody targets CD19-expressing B cells, offering a novel treatment for this rare autoimmune condition.

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Area of Science:

  • Immunology
  • Pharmacology
  • Neurology

Background:

  • Inebilizumab is a humanized monoclonal antibody targeting CD19-expressing B cells.
  • CD19-expressing B cells play a role in various autoimmune diseases.

Purpose of the Study:

  • To summarize the development milestones of inebilizumab.
  • To highlight the first global approval for treating neuromyelitis optica spectrum disorder (NMOSD).

Main Methods:

  • Development of a humanized anti-CD19 monoclonal antibody.
  • Clinical evaluation in autoimmune diseases and transplant desensitization.

Main Results:

  • Inebilizumab targets and depletes CD19+ B cells via antibody-dependent cell-mediated cytotoxicity.
  • Received US FDA approval in June 2020 for AQP4-IgG seropositive NMOSD.

Conclusions:

  • Inebilizumab represents a significant advancement in treating AQP4-IgG seropositive NMOSD.
  • Further clinical evaluation is ongoing for other autoimmune conditions and transplant desensitization.