Remegen Co. Ltd. emerged as a surprise challenger in the generalized myasthenia gravis space, unveiling positive phase III data of its China-approved lupus drug, telitacicept (RCT-18; Tai’ai), in the rare autoimmune neuromuscular disorder at the 2025 American Academy of Neurology conference.
Remegen Co. Ltd. emerged as a surprise challenger in the generalized myasthenia gravis space, unveiling positive phase III data of its China-approved lupus drug, telitacicept (RCT-18; Tai’ai), in the rare autoimmune neuromuscular disorder at the 2025 American Academy of Neurology conference.
Zai Lab Ltd., of Shanghai and Cambridge, Mass., has been on a regulatory roll in China, gaining approval of Bristol Myers Squibb Co.’s Augtyro (repotrectinib) for lung cancer on May 12 and NMPA acceptance of subcutaneous Vyvgart‘s (efgartigimod alfa SC) supplemental BLA with priority review on May 14.
Zai Lab Ltd., of Shanghai and Cambridge, Mass., has been on a regulatory roll in China, gaining approval of Bristol Myers Squibb Co.’s Augtyro (repotrectinib) for lung cancer on May 12 and NMPA acceptance of subcutaneous Vyvgart‘s (efgartigimod alfa SC) supplemental BLA with priority review on May 14.
In August 2020, Johnson & Johnson paid $6.5 billion cash to acquire Momenta Pharmaceuticals Inc. That strengthened J&J’s immune-mediated disease portfolio and grew its interest in autoantibody-driven disease therapies by bringing nipocalimab into the fold. Now the investment is paying off with top-line results of phase II and III studies that hit their primary endpoints using the fully human glycosylated monoclonal antibody targeting the human neonatal Fc receptor. The studies were in treating generalized myasthenia gravis and in Sjögren’s disease.
Argenx SE CEO Tim Van Hauwermeiren said that, with subcutaneous efgartigimod (efgartigimod alfa and hyaluronidase-qvfc) in pemphigus, the company is “facing a situation where, even with a strong scientific hypothesis and well-executed trial, we encountered the unknown-unknown,” and the phase III experiment failed. “We are committed to doubling down” on the execution of the firm’s business plan, he added.
Following a three-month delay, the U.S. FDA approved under priority review a subcutaneous formulation of Argenx SE’s efgartigimod, offering patients a much more convenient way to treat generalized myasthenia gravis (gMG).
Argenx NV’s Vyvgart (efgartigimod), approved late Friday by the FDA for treating generalized myasthenia gravis, became the first FcRn antagonist to cross the finish line. But the best news may be the drug’s broad label, which company executives highlighted during an investor call.
