Personalized dosing of ocrelizumab for treating relapsing remitting multiple sclerosis

Efficacy, Safety and Cost-effectiveness of B Cell Tailored Ocrelizumab Versus Standard Ocrelizumab in Relapsing Remitting Multiple Sclerosis: a Randomized Controlled Trial

Phase 4 Interventional Amsterdam UMC, location VUmc · NCT05296161

This study is testing if giving ocrelizumab at personalized times based on how quickly B cells come back can help adults with relapsing remitting multiple sclerosis feel better compared to the standard schedule.

Quick facts

PhasePhase 4
Study typeInterventional
Enrollment296 (estimated)
Ages18 Years to 60 Years
SexAll
SponsorAmsterdam UMC, location VUmc Academic / other
Drugs / interventionsocrelizumab, alemtuzumab
Locations1 site (Amsterdam, Noord-Holland)
Trial IDNCT05296161 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the efficacy, safety, and cost-effectiveness of ocrelizumab administered at personalized intervals tailored to individual B cell repopulation rates in patients with relapsing remitting multiple sclerosis (RRMS). The study involves a national multicenter randomized controlled design with a follow-up period of 96 weeks, comparing standard dosing every 24 weeks to a personalized approach. A total of 296 adult patients who have been on ocrelizumab for at least 12 months will be included in the trial.

Who should consider this trial

Good fit: Ideal candidates for this study are adults diagnosed with relapsing remitting multiple sclerosis who have been treated with ocrelizumab for a minimum of 48 weeks.

Not a fit: Patients who have received previous treatments with alemtuzumab, cladribine, or stem cell transplantation may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to more effective and individualized treatment plans for patients with RRMS.

How similar studies have performed: While personalized dosing approaches have been explored in other contexts, this specific method for ocrelizumab in RRMS is novel and has not been previously tested in a prospective setting.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* A current diagnosis of relapsing remitting multiple sclerosis according to the 2017 McDonald criteria34
* EDSS score of 0 to 6.5
* Treatment with ocrelizumab for a minimum of 48 weeks (two 300 mg infusions and one 600 mg infusion)

Exclusion Criteria:

* Previous treatment with alemtuzumab, cladribine or stem cell transplantation
* Relapse in the past 3 months prior to inclusion
* Subsequent treatment with another DMT next to ocrelizumab in the past 6 months prior to inclusion
* Inability to undergo regular MRI scanning
* Women who are pregnant or expect to become pregnant during the study period

Where this trial is running

Amsterdam, Noord-Holland

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Multiple Sclerosis, Relapsing-Remittingocrevusocrelizumabpersonalised dosing
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.