Efficacy and Safety of Remibrutinib After Switching From Ocrelizumab in Participants Living With Relapsing Multiple Sclerosis.

Key Inclusion Criteria:

* Male or female aged 40 to 70 years (inclusive)
* Diagnosis of RMS according to the 2017 McDonald diagnostic criteria
* Treated with ocrelizumab according to routine clinical practice and at standard dose
* Neurologically stable within 30 days
* Suitable to be switched to remibrutinib based on physician judgement or patient preference

Key Exclusion Criteria:

* Diagnosis of primary progressive multiple sclerosis (PPMS) according to the revised 2017 McDonald criteria
* History of clinically significant Central Nervous System disease or neurological disorders
* History of confirmed Progressive Multifocal Leukoencephalopathy or neurological symptoms consistent
* Active clinically significant systemic bacterial, viral, parasitic or fungal infections
* Active, chronic disease of the immune system other than MS
* Severe cardiac disease or significant findings on the ECG
* Participant who is unable to undergo MRI scans
* History of life-threatening infusion or injection reaction related to ocrelizumab
* Participants not adequately controlled on ocrelizumab (CD19+ B-cell count ≥10 cells/µL at screening)

Other inclusion and exclusion criteria may apply