A multicenter, retrospective study in patients with multiple sclerosis treated with natalizumab in a real-world setting in Japan: The REFIND study

The significant reduction in ARR observed with EID or SID/EID suggests that there is little difference between these dosing regimens in this retrospective dataset in Japan. The effectiveness of natalizumab in reducing the number of new or enlarging T2 lesions was similar across all dosing groups and consistent with known high efficacy of natalizumab in controlling disease activity. These real-world data on natalizumab EID in Japan may help inform treatment choices for Asian populations.