Eculizumab Injection, marketed under the brand name Ultomiris®, has received approval in China for the treatment of adult patients diagnosed with anti-aquaporin 4 (AQP4) antibody-positive neuromyelitis optica spectrum disorder (NMOSD). NMOSD is a rare and severely disabling autoimmune condition that primarily targets the spinal cord and optic nerves, causing significant impairment to the central nervous system. The approval of Ultomiris® hinges on the promising outcomes of the Phase III CHAMPION-NMOSD clinical trial, offering patients a renewed hope for achieving relapse-free remission.