Impact of Ocrelizumab on Cerebrospinal Fluid Biomarkers at Multiple Sclerosis Onset (IMPACT MS)

January 22, 2026 updated by: University of California, San Francisco
Newly diagnosed relapsing multiple sclerosis (MS) and high risk clinically isolated syndrome (CIS) patients will be treated with ocrelizumab at disease onset to see if treatment favorably alters CSF markers of chronic inflammation.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Newly diagnosed relapsing multiple sclerosis (MS) and high risk clinically isolated syndrome (CIS) patients age 18-50 will be treated with ocrelizumab within 90 days of first clinical MS/CIS presentation and re-dosed as maintenance therapy every 6 months for 3 years to see if treatment favorably alters CSF markers of chronic inflammation

Investigators hope data that will provide a foundation for further studies that treating relapsing MS patients at clinical onset (using a B-cell depleting therapy) may improve longer-term outcomes.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • United States
    • California
      • San Francisco, California, United States, 94158
        • University of California San Francisco

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

14 years to 46 years (Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

Patients must meet the following criteria to be included in this study:

  • Signed Consent Form
  • High-risk clinically isolated syndrome or relapsing MS Diagnosis (based on 2017 International Panel Criteria)
  • Age 18-50 inclusive
  • Screening within 90 days of first clinical demyelinating event typical of MS with 1 or more inactive lesions typical of MS
  • No prior MS disease modifying therapy
  • No corticosteroids within 7 days of first ocrelizumab treatment
  • EDSS < 4.0
  • A negative urine or serum pregnancy test must be available for premenopausal women and for women <12 months after the onset of menopause, unless they have undergone surgical sterilization.

  • Women of childbearing potential must agree to remain abstinent (refrain from heterosexual intercourse) or use one method of contraception with a failure rate of <1% per year or a barrier method supplemented with spermicide. Contraception must continue for the duration of study treatment and for at least 24 weeks after the last dose of study treatment. A woman is considered to be of childbearing potential if she is postmenarcheal, has not reached a postmenopausal state (≥ 12 continuous months of amenorrhea with no identified cause of other than menopause), and has not undergone surgical sterilization (removal of the ovaries and/or uterus).

    • Examples of contraceptive methods with a failure rate of <1% per year include bilateral tube ligation, male sterilization, established hormonal contraceptives that inhibit ovulation, hormone-releasing intrauterine devices, and copper intrauterine devices.
    • The reliability of sexual abstinence should be evaluated in relation to the duration of the clinical trial and the preferred and usual lifestyle of the patient. Periodic abstinence and withdrawal are not acceptable methods of contraception.
    • Examples of barrier methods supplemented with the use of spermicide include male or female condom, cap, diaphragm, or sponge.

Exclusion Criteria:

Patients will be excluded from the study based on the following criteria:

  • Pregnancy, lactation, or intention to become pregnant during the study
  • Progressive MS (primary or secondary)
  • Disease other than MS to explain the first demyelinating event; including AQP4 IgG seropositivity
  • Unwilling or unsafe to proceed with CSF exams based on coagulopathy or anatomy or other considerations in the judgment of the study investigator
  • Unwilling or unsafe to proceed with MRI
  • Active hepatitis B virus infection
  • Untreated latent or active tuberculosis
  • Active hepatitis C virus infection
  • HIV infection
  • Hypersensitivity to trial medications
  • History of life-threatening infusion reaction to MAbs

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Ocrelizumab treated
Participants age 18-50 with a first clinical presentation of MS or high-risk CIS diagnosed within 90 days of screening will be treated with ocrelizumab (300 mg IV x 2 doses given 2 weeks apart) at disease origin and with maintenance ocrelizumab 600 mg every 6 months through 30 months with a final study visit at 3 years
Drug: Ocrelizumab
open label biomarker study
Other Names:
  • Ocrevus
No Intervention: Observational study cohort
Subjects enrolled into an observational study matched for the same disease duration and who are either untreated or treated with alternate MS disease modifying therapies will serve as a parallel reference group

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Comparison of intrathecal synthesis of gammaglobulins in treatment-naïve relapsing MS and clinically isolated syndrome participants before and after treatment with ocrelizumab
Time Frame: 3 years
Comparison of intrathecal synthesis of gammaglobulins in treatment-naïve relapsing MS and clinically isolated syndrome participants before and after 3 years of treatment with ocrelizumab. Intrathecal synthesis is measured by either a) normalization of the IgG Index (0.6 is the upper limit of normal) or b) eradication of oligoclonal bands
3 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of California, San Francisco

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Genentech, Inc.
Valhalla Foundation

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Bruce Cree, MD, PhD, MAS, University of California, San Francisco

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 30, 2020

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 7, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 7, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 10, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 26, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 22, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
January 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • RO-IIS-2018-10828

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Outcome data (biomarker, genotypic) as well as study data related to diagnosis, disease presentation, and date of birth, along with biological specimens collected as part of the study, may be shared (in coded form) in the future with other qualified researchers, government data registries, and/or commercial entities on a case by case basis at the discretion of the PI and Co-PIs. Any such investigator/entity will be required to provide appropriate documentation that the research being conducted has been approved by an Institutional Review Board and demonstrate that it will be of scientific value.

IPD Sharing Time Frame

Clinical study report to Sponsor estimated May 2025. Other data/samples will be shared after initial results are published and on a case by case basis.

IPD Sharing Access Criteria

Collaborators, other scientific Investigators, Government Health and research agencies, Commercial Companies may request data and/or samples. The request process includes submitting a research proposal, having necessary IRB approval and material transfer agreements.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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