Globenewswire·2025-10-29 15:01Core Insights - Telitacicept has shown significant improvement in quality of life for patients with generalized myasthenia gravis (gMG), with 100% of patients achieving a ≥2-point improvement in Myasthenia Gravis Activities of Daily Living (MG-ADL) after 48 weeks [1][2] - The drug demonstrated sustained efficacy and a favorable safety profile, suggesting it may have a global best-in-disease profile for gMG [1][2] Study Results - In the 48-week open-label extension (OLE) study, patients on telitacicept achieved a mean reduction of -7.5 points in MG-ADL, while those who crossed over from placebo achieved a -6.3 point reduction [6] - At week 48, 96.2% of continuous telitacicept patients and 90.2% of crossover patients reached a ≥3-point improvement in MG-ADL [6] - The mean change in Quantitative Myasthenia Gravis (QMG) was -9.8 for continuous patients and -9.3 for crossover patients, with 94.2% and 90.2% achieving a ≥5-point improvement, respectively [6] Mechanism of Action - Telitacicept is a recombinant fusion protein that selectively inhibits BLyS (BAFF) and APRIL, two cytokines crucial for B cell and plasma cell survival, thereby reducing autoreactive B cells and autoantibody production [5] Regulatory Status - Telitacicept is already approved in China for systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and generalized myasthenia gravis (gMG) [7] - A global Phase 3 clinical trial for gMG is currently ongoing across 14 countries, aiming for potential approval in the United States, Europe, and Japan [7] Disease Context - Generalized myasthenia gravis (gMG) is a rare autoimmune neuromuscular disorder affecting approximately 90,000 people in the United States, 140,000 in Europe, and 29,000 in Japan, characterized by muscle weakness due to autoantibodies [8]