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A Study to Evaluate Pharmacokinetics, Safety, Tolerability, Immunogenicity and Pharmacodynamic Effects of Subcutaneous Ocrelizumab Administration in Children and Adolescents With Relapsing-remitting Multiple Sclerosis (RRMS)

An Open-label Study to Evaluate Pharmacokinetics, Safety, Tolerability, Immunogenicity and Pharmacodynamic Effects of Subcutaneous Ocrelizumab Administration in Children and Adolescents With Relapsing-remitting Multiple Sclerosis

Status
Not yet recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07503340
Acronym
Operetta III
Enrollment
25
Registered
2026-03-31
Start date
2026-10-30
Completion date
2031-08-01
Last updated
2026-09-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Relapsing-remitting Multiple Sclerosis

Brief summary

The main purpose of this study is to evaluate the pharmacokinetics (PK) of ocrelizumab administered subcutaneously (SC) in children and adolescents aged 10 to \<18 years with RRMS. The study consists of a 48-week treatment period, an Optional Ocrelizumab Extension (OOE) period of at least 48 weeks, and Safety Follow-up (SFU) for 104 weeks.

Detailed description

For participants who are under 18 years old at the end of the OOE period, it may be extended until the participant turns 18 years old (or as required per local regulation) or until commercial ocrelizumab intravenous (IV) is approved for children and adolescents and available in the country for these participants, whichever occurs first.

Interventions

Ocrelizumab co-formulated with rHuPH20 will be administered as per the schedule specified in the arm.

Sponsors

Hoffmann-La Roche
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
10 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

* Children and adolescents from 10 years to less than 18 years of age, at the time of baseline visit * Body weight ≥25 kg * Diagnosis of RRMS in accordance with the International Pediatric Multiple Sclerosis Study Group (IPMSSG) criteria for pediatric MS, Version 2012, or McDonald criteria 2017 or 2024 * Neurologic stability for at least 30 days prior to screening, and between screening and baseline * Expanded Disability Status Scale (EDSS) score, 0-5.5, at screening * Must have received all childhood required vaccinations as per local/national recommendations for childhood vaccination against infectious diseases

Exclusion criteria

* Participants who are positive for aquaporin 4 (AQP4) or myelin oligodendrocyte glycoprotein (MOG) antibody are not eligible to participate in the study * Any known presence or suspicion of other neurologic disorders that may mimic multiple sclerosis (MS) * History or known presence of recurrent or chronic infection (e.g., human immunodeficiency virus \[HIV\], syphilis, tuberculosis \[TB\]) * Contraindications against SC injections or other conditions not suitable for SC injections, e.g., extremely thin SC fat layer * History of a severe allergic or anaphylactic reaction to humanized or murine monoclonal antibody or known hypersensitivity to any component of ocrelizumab solution * Contraindications to mandatory premedications (i.e., corticosteroids and histamines), including closed-angle glaucoma for antihistamines * Participants who have previously received treatment with B cell-targeted therapies, including ocrelizumab * Any previous treatment with alemtuzumab, anti-CD4, cladribine, mitoxantrone, daclizumab, laquinimod, total body irradiation, or bone marrow transplantation * Treatment with any investigational agent within 24 weeks of screening or 5 half-lives, whichever is longer (or longer if indicated by the PD action of the drug)

Design outcomes

Primary

MeasureTime frame
Peak Concentration (Cmax) of Ocrelizumab After the First SC InjectionUp to 24 weeks
Area Under the Concentration-time Curve Over a Dosing Interval (AUCtau) After the First SC Injection of OcrelizumabUp to 24 weeks

Secondary

MeasureTime frame
Incidence and Nature of Adverse Events (AEs)Up to 260 weeks
Percentage of Participants Who Discontinued Study Treatment due to AEsUp to 96 weeks
Levels of Cluster of Differentiation 19+ (CD19+) B-cell Count in BloodUp to 260 weeks
Number of Participants With Anti-drug Antibodies (ADAs) to OcrelizumabUp to 260 weeks
Number of Participants With ADAs to rHuPH20Up to 260 weeks

Contacts

CONTACTReference Study ID Number: BA45841 https://forpatients.roche.com/ No attachments to email below.
global-roche-genentech-trials@gene.com888-662-6728 (U.S. Only)
CONTACTFastest response: use the inquiry form. https://www.gene.com/contact-us/submit-medical-inquiry
STUDY_DIRECTORClinical Trials

Hoffmann-La Roche

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 4, 2026