A Phase-2b, Double-Blind, Randomized Controlled Trial to Evaluate the Activity and Safety of Inebilizumab in Anti-Nmda Receptor Encephalitis and Assess Markers of Disease

Summary

Determine the difference in the modified Rankin score at 16 weeks in participants with anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis treated with "first-line" immunomodulatory therapies provided as standard-of-care, and either inebilizumab (investigational agent) or placebo.

Description

Eligibility

Age range

12+ years

Sex

All

Healthy volunteers

No

Interventions

• Drug
  Inebilizumab

  RCP: Blinded treatment on Day 1, Day 15, * Inebilizumab group: Inebilizumab 300 mg intravenous (IV) * Placebo group: IV matching placebo Prior to enrollment, all participants will receive standard of care, including high-dose corticosteroids (minimum of 3 days of treatment, 1 g methylprednisolone daily or equivalent) AND either IVIg (total dose range between 1.2 and 2 g/kg) OR plasmapheresis (defined as 5 or 6 exchanges). Rescue therapy will be given to participants in either treatment group based on the results of the Week 6 assessments. Rescue therapy is cyclophosphamide 750 mg/m2 IV followed by additional doses every 28-30 days until the mRS score is ≤ 3 (at site Principal Investigator's discretion under standard of care).

• Drug
  Placebo

  The placebo group will receive IV matching placebo on Day 1 and Day 15,

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