Sanofi Multiple Sclerosis Trial Meets Endpoint
Sanofi says data from a Phase 2 trial of frexalimab, a novel second-generation investigational anti-CD40L antibody, “significantly reduced disease activity” in patients with relapsing multiple sclerosis. “Following 12 weeks of therapy, the number of new gadolinium-enhancing (GdE) T1-lesions was reduced by 89% and 79% in the higher- and lower-dose treatment arms, respectively, compared with placebo, meeting the study’s primary endpoint,” it says. A pivotal Phase 3 study is planned for early 2024.
The company says the monoclonal antibody is believed to work by blocking the “costimulatory CD40/CD40L cellular pathway necessary for adaptive (T and B cells) and innate (macrophages and dendritic cells) immune cell activation and function, without lymphocyte-depletion. The drug is being developed under an exclusive license from ImmuNext.