Mayzent

The goal of this clinical trial is to learn if drug CYB704, a proposed biosimilar to Ocrevus, works to treat multiple sclerosis in the same way as the reference product Ocrevus(R). The main questions it aims to answer are: * Is CYB704 distributed in the body in the same way as the reference product (demonstration of pharmacokinetic (PK) similarity)? * Does have CYB704 the same treatment effect and side effects as the reference product? Researchers will compare CYB704 to a Ocrevus (Ocrevus-US and Ocrevus-EU). Participants will: * Take drug CYB704 or Ocrevus (Ocrevus-US and Ocrevus-EU) * Visit the clinic for at least 15 treatment visits, checkups and tests * Will undergo regular magnetic resonance imaging (MRI) examinations

The purpose of this Phase 3b study is to assess the efficacy, safety and tolerability of remibrutinib after switching from ocrelizumab and compared to continuous ocrelizumab treatment, in patients living with relapsing multiple sclerosis (plwRMS).

A multi-center pilot study to evaluate safety and efficacy of ozanimod as de-escalation therapy in clinically stable MS patients previously treated with anti-CD20 therapy.

This is a Phase 3 extension, global, multicenter study to assess the long-term safety and tolerability of tolebrutinib in adult participants (aged ≥18 years) with RMS, PPMS, or NRSPMS who were previously enrolled in the Phase 2b LTS (LTS16004) or 1 of the 4 Phase 3 tolebrutinib pivotal trials (GEMINI 1 \[EFC16033\], GEMINI 2 \[EFC16034\], HERCULES \[EFC16645\], or PERSEUS \[EFC16035\]). SUBSTUDY: ToleDYNAMIC substudy

This trial compares two medications, remibrutinib and teriflunomide, for treating patients with relapsing multiple sclerosis. These patients have repeated episodes of symptoms and need effective treatments. The medications work by controlling the immune system to prevent it from causing damage to the nervous system. Teriflunomide is an approved medication for adults with relapsing multiple sclerosis.

This trial compares remibrutinib and teriflunomide in patients with relapsing multiple sclerosis. It aims to find out which medication is more effective and safer. Both drugs work by controlling the immune system to reduce relapses. Teriflunomide is an approved treatment for adults with this condition.

This trial is testing fenebrutinib, a medication, to see its effects on the brain in people with relapsing multiple sclerosis (RMS). Researchers will use MRI scans to observe any changes. They will also check if the drug is safe and how it is processed by the body. Participants will either receive fenebrutinib or a non-active substance.

A study to evaluate the efficacy and safety of fenebrutinib on disability progression and relapse rate in adult participants with RMS. Eligible participants will be randomized 1:1 to either fenebrutinib or teriflunomide. At the end of the DBT phase (after disclosure of the DBT results), the Sponsor will determine whether or not to initiate the open-label extension phase of the study.

This is a multi-center prospective rater-masked (blinded) randomized controlled trial of 156 participants, comparing the treatment strategy of Autologous Hematopoietic Stem Cell Transplantation (AHSCT) to the treatment strategy of Best Available Therapy (BAT) for treatment-resistant relapsing multiple sclerosis (MS). Participants will be randomized at a 1 to 1 (1:1) ratio. All participants will be followed for 72 months after randomization (Day 0, Visit 0).