A Study of Ocrelizumab Administered Subcutaneously in Participants With Multiple Sclerosis Who Switch From an Approved Anti-CD20 Therapy
OSSIA
A Prospective, Multicenter, Single-arm Study of Ocrelizumab Administered Subcutaneously in Patients With Multiple Sclerosis Who Switch From an Approved Anti-CD20 Therapy
1 other identifier
interventional
100
2 countries
11
Brief Summary
The purpose of this study is to assess the imaging biomarkers, patient outcomes, safety, tolerability, and treatment satisfaction of ocrelizumab (OCR) combined with recombinant human hyaluronidase (rHuPH20) administered subcutaneously (SC) in participants with relapsing multiple sclerosis (RMS) or primary progressive multiple sclerosis (PPMS) after switching from another anti-cluster of differentiation 20 (aCD20) therapy approved for RMS (ofatumumab SC, ublituximab-xiiy intravenous \[IV\], ocrelizumab IV) or PPMS (ocrelizumab IV).
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_4 multiple-sclerosis
Started Jul 2026
Typical duration for phase_4 multiple-sclerosis
11 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
May 20, 2026
CompletedFirst Posted
Study publicly available on registry
May 27, 2026
CompletedStudy Start
First participant enrolled
July 15, 2026
ExpectedPrimary Completion
Last participant's last visit for primary outcome
February 28, 2029
Study Completion
Last participant's last visit for all outcomes
February 28, 2029
May 27, 2026
May 1, 2026
2.6 years
May 20, 2026
May 20, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Percentage of Participants With no Change or Reduction From Baseline in Number of T1 Gadolinium-enhanced (Gd+) Lesions as Detected by Brain Magnetic Resonance Imaging (MRI) at Week 24
Baseline, Week 24
Secondary Outcomes (10)
Percentage of Participants With no New or Enlarging T2 Lesions as Detected by Brain MRI at Week 24
At Week 24
Number of Participants With Adverse Events (AEs)
Up to Week 48
Percentage of Participants With no Change or Reduction From Baseline in Number of T1 Gd+ Lesions as Detected by Brain MRI at Week 48
Baseline, Week 48
Percentage of Participants With no New or Enlarging T2 Lesions as Detected by Brain MRI at Week 48
At Week 48
Change From Baseline in Cluster of Differentiation 19 (CD19+) B-cell Counts at Week 24 and Week 48
Baseline, Weeks 24 and 48
- +5 more secondary outcomes
Study Arms (1)
OCR SC
EXPERIMENTALParticipants will receive OCR SC, 920 milligrams (mg) at Day 1 and at Week 24.
Interventions
Participants will receive OCR SC as per the schedule specified in the arm and the United States Prescribing Information (USPI).
Eligibility Criteria
You may qualify if:
- Diagnosis of RMS or PPMS according to the revised McDonald 2017 criteria
- Documented Expanded Disability Status Scale (EDSS) score of 0-6.5, inclusive, at screening (or within 6 months of screening)
- Participants discontinuing aCD20 therapy for reasons including, but not limited to, physician/participant preference, access to commercial drug (e.g., insurance coverage issues), or other logistical reasons (such as geographical relocation, travel, etc.) are eligible for this study
- Prior treatment with ofatumumab SC, ublituximab-xiiy IV, or ocrelizumab IV aCD20 therapy
You may not qualify if:
- Participants who have demonstrated suboptimal response to aCD20 therapy
- Discontinuing aCD20 therapy because of any of the following treatment emergent adverse events (TEAEs): 1) Grade ≥3 severe infusion-related reaction (IRRs) or injection reactions (IRs); 2) Recurrent Grade ≥3 infections, or the need for ≥2 courses of antibiotics after starting aCD20 therapy, if the investigator believes infection is related to therapy
- Participants with contraindication to Gd+ and participants who for any reason cannot tolerate MRI procedure
- Known presence of active, recurrent, or chronic infection (e.g., human immunodeficiency virus \[HIV\], syphilis, human papillomavirus \[HPV\], tuberculosis \[TB\])
- History of confirmed or suspected progressive multifocal leukoencephalopathy (PML)
- Known presence of neurologic disorders that may interfere with the diagnosis of RMS or PPMS
- Any concomitant disease that may require treatment with systemic corticosteroids (e.g., mineralocorticoids and glucocorticoids) or immunosuppressants during the study
- Known allergy or hypersensitivity to ocrelizumab, rHuPH20, or excipients of the OCR SC formulation
- Any previous treatment with bone marrow transplantation and hematopoietic stem cell transplantation
- Treatment with any live-attenuated vaccine within 6 weeks prior to baseline
- Treatment with any experimental procedures for RMS or PPMS (e.g., treatment for chronic cerebrospinal venous insufficiency)
- Previous treatment with cladribine, atacicept, alemtuzumab or mitoxantrone
- Positive hepatitis B virus (HBV) and hepatitis C virus (HCV) antibody test at screening
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Genentech, Inc.lead
Study Sites (11)
Alabama Neurology Associates
Birmingham, Alabama, 35209, United States
Clinical Endpoints
Scottsdale, Arizona, 85258, United States
Advanced Neurology of Colorado
Fort Collins, Colorado, 80528, United States
Neurology Associates - Maitland
Orlando, Florida, 32751, United States
Multiple Sclerosis Center of Atlanta/Atlanta Neuroscience Institute
Atlanta, Georgia, 30327, United States
Minneapolis Clinic of Neurology
Minneapolis, Minnesota, 55422, United States
Ohio State University, Multiple Sclerosis and Neuroimmunology Center
Columbus, Ohio, 43210, United States
Neurology Clinic, P.C.
Cordova, Tennessee, 38018, United States
DHR Health MS Center
McAllen, Texas, 78501, United States
MultiCare Institute for Research & Innovation
Tacoma, Washington, 98405, United States
Caribbean Center for Clinical Research
Guaynabo, 00968, Puerto Rico
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
Clinical Trials
Hoffmann-La Roche
Central Study Contacts
Reference Study ID Number: ML46740 https://forpatients.roche.com/
CONTACT
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
May 20, 2026
First Posted
May 27, 2026
Study Start (Estimated)
July 15, 2026
Primary Completion (Estimated)
February 28, 2029
Study Completion (Estimated)
February 28, 2029
Last Updated
May 27, 2026
Record last verified: 2026-05
Data Sharing
- IPD Sharing
- Will share
For eligible studies, qualified researchers may request access to individual patient level clinical data. See Roche's commitment to transparency of clinical study information here: https://go.roche.com/data\_sharing