Immediate Versus Delayed Treatment With Azathioprine or Rituximab in Anti-MOG Antibodies Associated Acute Demyelinating Syndromes in Children: a Randomized Controlled Clinical Trial
Immediate Versus Delayed Treatment With Azathioprine or Rituximab in Anti-myelin Oligodendrocytes Glycoprotein (Anti-MOG) Antibodies Associated Acute Demyelinating Syndromes in Children: a Randomized Controlled Clinical Trial
Assistance Publique - Hôpitaux de Paris
86 participants
Jun 23, 2025
INTERVENTIONAL
Conditions
Summary
Among all non viral encephalitis, myelin oligodendrocytes glycoprotein antibody associated diseases (MOGAD) are the second most frequent diagnosis in children. Risk of relapses varies according to studied cohorts and cognitive and academic difficulties are more and more detected in children without knowing if these sequelae are related to the first attack or relapses. The hypothesis is that earlier treatment would induce reduction of sequelae after the first attack and the number of relapses which would be also associated with a subsequent reduction of disability occurrence on the long term.
Eligibility
Plain Language Summary
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Interventions
Patients randomized in Immediate Azathioprine group will benefit from immediate treatment with azathioprine. Treatment will be started at 2mg/kg or at 1mg/kg if the patient has a partial activity which would be increased slowly according the 6-TGN activity and clinical and biological tolerance at Week 2 for patient with partial activity or M1 for patient without TPMT activity deficit. Only for patient with partial deficit and whose 6-TGN activity is low, azathioprine would be increased at 3mg/kg/d at Week 6 and without exceeding a total daily dose of 150 mg.
Patients randomized in Immediate Rituximab group will benefit from immediate treatment with rituximab. Rituximab 375mg/m2 IV will be given at D1 and D15 and repeat every 6 months for 2 years. Once the inclusion criteria are validated, the first injection will be performed according to the injection protocol (Annex 4). Fifteen day later, the second injection will be performed. The next visit during a consultation with PI or his collaborators will be scheduled 1 week ± 2 days later, and patients will be advised to contact the PI if any neurologic symptoms or symptoms of adverse event occurs in the meantime.
Patients in this group will be treated according to standard care
Locations(9)
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NCT05545384