Trial intelligence / Profile preview

MESAE: hUC-MSC-Exo for Autoimmune Encephalitis

NCT07131683Phase 2

Key facts

Status
Not yet recruiting
Start
Nov 2025
Primary completion
Jun 2027
Sponsor
Xuanwu Hospital
Modality
Lipid-based Nanoparticles, Cell Therapies
Conditions
Autoimmune Encephalitis (AE)
01

Overview

Phase 2, randomised, double-blind trial of human umbilical cord mesenchymal stem cell-derived exosomes in Autoimmune Encephalitis (AE) (5 arms), sponsored by Xuanwu Hospital. Primary endpoints: Dose-Limiting Toxicity events at 24 weeks and Modified Rankin Scale at 24 weeks. Planned start Nov 2025; status: not yet recruiting.

02

Design

5 arms
Study design
RandomizedDouble-blind
  • Dose Escalation: Low Dose

    hUC-MSC-Exo 2.5x10^10 particles

  • Dose Escalation: Mid Dose

    hUC-MSC-Exo 5.0x10^10 particles

  • Dose Escalation: High Dose

    hUC-MSC-Exo 1.0x10^11 particles

  • Expansion: Exosome Group

    hUC-MSC-Exo at MTD

  • Expansion: Control Group

    Placebo (Exosome mimetic)

03

Who it enrols

Adult patients (18-65) with autoimmune encephalitis (anti-NMDAR or anti-LGI1 positive) diagnosed within 3 months and mRS >= 2. Excludes patients with severe organ dysfunction, active infections (HBV, HCV, HIV, Syphilis), pregnancy, or prior stem cell therapy.

04

Endpoints

Primary

  • Dose-Limiting Toxicity events

  • Modified Rankin Scale

Secondary

  • Adverse Events and Serious Adverse Events

  • Modified Rankin Scale

  • Percentage of mRS 0-2

  • Percentage of mRS improvement >= 1

  • Clinical Assessment Scale in Autoimmune Encephalitis

  • Activities of Daily Living

  • Mini-Mental State Examination

  • Montreal Cognitive Assessment

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