NewslettersMuscle Cell News Ultomiris Approved in the US for Adults with Generalised Myasthenia Gravis By Ishira - May 2, 2022 0 388 Ultomiris has been approved in the US for the treatment of adult patients with generalised myasthenia gravis who are anti-acetylcholine receptor antibody-positive, which represents 80% of people living with the disease. [AstraZeneca] Press Release