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NCT Number: NCT07609719

A Study of Ocrelizumab Administered Subcutaneously in Participants With Multiple Sclerosis Who Switch From an Approved Anti-CD20 Therapy

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).

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Key information

Conditions

Multiple Sclerosis Autoimmune Diseases Autoimmune Diseases of the Nervous System Chronic Disease Demyelinating Autoimmune Diseases, CNS Demyelinating Diseases Disease Attributes Immune System Diseases Multiple Sclerosis, Chronic Progressive Nervous System Diseases Pathologic Processes Pathological Conditions, Signs and Symptoms

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 4

Primary location

Caribbean Center for Clinical Research, Guaynabo, Puerto Rico

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 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

Exclusion criteria

  • 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

Other protocol defined inclusion and exclusion criteria may apply.

Treatment and study plan

OCR SC

Drug

Participants will receive OCR SC as per the schedule specified in the arm and the United States Prescribing Information (USPI).

Other names: Ocrevus Zunovo® USPI;, RO4964913

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

    Time frame: Baseline, Week 24

Secondary outcomes

  1. Percentage of Participants With no New or Enlarging T2 Lesions as Detected by Brain MRI at Week 24

    Time frame: At Week 24

  2. Number of Participants With Adverse Events (AEs)

    Time frame: Up to Week 48

  3. Percentage of Participants With no Change or Reduction From Baseline in Number of T1 Gd+ Lesions as Detected by Brain MRI at Week 48

    Time frame: Baseline, Week 48

  4. Percentage of Participants With no New or Enlarging T2 Lesions as Detected by Brain MRI at Week 48

    Time frame: At Week 48

  5. Change From Baseline in Cluster of Differentiation 19 (CD19+) B-cell Counts at Week 24 and Week 48

    Time frame: Baseline, Weeks 24 and 48

  6. Treatment Satisfaction Score With Prior aCD20 Therapy, as Assessed Using Treatment Satisfaction Questionnaire for Medication (TSQM-II)

    Time frame: At Day 1 (Baseline)

    TSQM-II is an 11-item questionnaire with a 2- to 3-week recall period or since last use of medication. The questionnaire includes 4 domains: an effectiveness scale, a side effects scale, a convenience scale, and a global satisfaction scale. Each item is rated using Likert-type scales of 5 or 7 points and dichotomous (Yes/No) responses with higher scores corresponding to higher satisfaction in that domain.

  7. Treatment Administration Satisfaction Score After Dose of OCR SC at Day 1 and Week 24, as Assessed Using Treatment Administration Satisfaction Questionnaire - Subcutaneous Injection (TASQ SC)

    Time frame: At Day 1 (Baseline) and Week 24

    TASQ SC is a 13-item questionnaire to evaluate participants' experience on their most recent OCR SC administration. The questionnaire consists of items related to SC injections, each rated on a 3- or 5-point Likert scale with higher scores corresponding to higher satisfaction and/or a more positive experience.

  8. Treatment Satisfaction Score With OCR SC at Week 24 and Week 48, as Assessed Using TSQM-II

    Time frame: At Weeks 24 and 48

    TSQM-II is an 11-item questionnaire with a 2- to 3-week recall period or since last use of medication. The questionnaire includes 4 domains: an effectiveness scale, a side effects scale, a convenience scale, and a global satisfaction scale. Each item is rated using Likert-type scales of 5 or 7 points and dichotomous (Yes/No) with higher scores corresponding to higher satisfaction in that domain.

  9. Change From Baseline in Multiple Sclerosis Impact Scale (MSIS-29) Scores at Week 24 and Week 48

    Time frame: Baseline, Weeks 24 and 48

    MSIS-29 is a 29-item questionnaire to examine the impact of MS on physical and psychological functioning from a participant's perspective. Participants are asked to rate how much their functioning and well-being have been impacted over the past 14 days on a 4-point scale, from 1 = "Not at all" to 4 = "Extremely". The physical score is the sum of items 1-20, which is then transformed to a 0-100 scale. The psychological score is the sum of items 21-29, transformed to a 0-100 scale. Higher scores indicate a greater impact of MS.

  10. Number of Participants who Switched From Approved aCD20 Therapy to OCR SC, Categorized by Reasons for Switching

    Time frame: At Baseline

Study contacts

Contact information is provided by the study sponsor or research team.

Fastest response: use the inquiry form. https://www.gene.com/contact-us/submit-medical-inquiry

CONTACT

Reference Study ID Number: ML46740 https://forpatients.roche.com/ No attachments to email below.

CONTACT

[email protected]

888-662-6728 (U.S.)

Sponsors and collaborators

Lead sponsor

Genentech, Inc.

Industry

Registry information

Official study title

A Prospective, Multicenter, Single-arm Study of Ocrelizumab Administered Subcutaneously in Patients With Multiple Sclerosis Who Switch From an Approved Anti-CD20 Therapy

Acronym: OSSIA

Important dates

Study start
2026
Primary completion
2029
Study completion
2029
First posted
May 27, 2026
Registry last updated
Jul 6, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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