RecruitingA Study Comparing Effectiveness of Kesimpta® (Ofatumumab) Versus Ocrevus® (Ocrelizumab) in Real-world PracticeThis study aims to generate real-world evidence on the clinical effectiveness and economic burden of ofatumumab (OMB) versus ocrelizumab (OCR) in patients diagnosed with multiple sclerosis (MS) in the United States (US). Clinical effectiveness will be assessed using annualized relapse rate (ARR), while economic burden will be assessed using healthcare resource utilization (HCRU) and healthcare costs (HCC). This study will use two primary data sources that capture longitudinal, de-identified healthcare utilization derived from claims submitted for reimbursement.