Summary: The purpose of each study is to independently measure the annualized relapse rate (ARR) with administration of frexalimab compared to a daily oral dose of teriflunomide in male and female participants with relapsing forms of multiple sclerosis (aged 18 to 55 years at the time of enrollment). People diagnosed with relapsing forms of multiple sclerosis are eligible for enrollment as long as they mee...

Summary: This is an observational, non-interventional, multicenter, open-label study in patients being treated with any approved injectable or selected oral DMT for RMS in Germany. Prospective, primary data will be collected via questionnaires and an electronic case report form (eCRF) over a period of up to four years. Additionally, medical history of participants will be collected including disease durati...

Background: HTLV-1 associated myelopathy/tropical spastic paraparesis (HAM/TSP) is a rare, progressive disease. It occurs in some people infected with the HTLV-1 virus. It leads to weakness in the lower limbs and other serious problems. It has no treatment. Teriflunomide is a drug used to treat multiple sclerosis. It reduces immune cells that make the disease worse. Researchers want to learn if this drug can ...