The main objectives of the study are to demonstrate pharmacokinetics (PK) similarity between ABP 692 and Ocrelizumab (US), and ABP 692 and Ocrelizumab (EU), and to demonstrate pharmacodynamics (PD) similarity between ABP 692 and Ocrelizumab reference product (RP) based on assessment of the suppression of new active brain lesions over 24 weeks as assessed by magnetic brain imaging (MRI).

Inclusion Criteria:

1. Diagnosis of RRMS in accordance with the revised McDonald Criteria 2017 (Thompson et al, 2018).
2. Expanded Disability Status Scale score at screening ≥ 0 and ≤ 5.5 inclusive.
3. Evidence of recent MS activity as defined by the study protocol.
4. Neurologically stable subject, with no relapse for ≤ 28 days before randomization.

Exclusion Criteria:

1. Diagnosis of primary progressive or with secondary progressive MS (Thompson et al, 2018).
2. Multiple sclerosis disease duration of ≥ 10 years in Participants with Expanded Disability Status Scale (EDSS) score of ≤ 2.5 at screening.
3. Any contraindications to study procedures or medications as outlined in the study protocol.
4. Any prohibited medication as defined in the study protocol.
5. Any significant concomitant disease that may require chronic treatment with systemic corticosteroids and/or systemic immunosuppressants during the study.
6. Current or history of any significant medical conditions as described in the study protocol.
7. Any abnormal laboratory blood values as defined in the study protocol.

De-identified individual patient data for variables necessary to address the specific research question in an approved data sharing request.

Data sharing requests relating to this study will be considered beginning 18 months after the study has ended and either 1) the product and indication have been granted marketing authorization in both the US and Europe or 2) clinical development for the product and/or indication discontinues and the data will not be submitted to regulatory authorities. There is no end date for eligibility to submit a data sharing request for this study.

Qualified researchers may submit a request containing the research objectives, the Amgen product(s) and Amgen study/studies in scope, endpoints/outcomes of interest, statistical analysis plan, data requirements, publication plan, and qualifications of the researcher(s). In general, Amgen does not grant external requests for individual patient data for the purpose of re-evaluating safety and efficacy issues already addressed in the product labelling. Requests are reviewed by a committee of internal advisors. If not approved, a Data Sharing Independent Review Panel will arbitrate and make the final decision. Upon approval, information necessary to address the research question will be provided under the terms of a data sharing agreement. This may include anonymized individual patient data and/or available supporting documents, containing fragments of analysis code where provided in analysis specifications. Further details are available at the URL below.