FDA Approves Targeted Treatment for Rare Duchenne Muscular Dystrophy Mutation - Drug Information Update

If your email program has trouble displaying this email, view it as a web page. FDA Approves Targeted Treatment for Rare Duchenne Muscular Dystrophy Mutation Today, the U.S. Food and Drug Administration granted approval for Amondys 45 (casimersen) injection for the treatment of Duchenne muscular dystrophy (DMD) in patients who have a confirmed mutation of the DMD gene that is amenable to exon 45 skipping (Exons are pieces of DNA that provide information for making proteins in a person's genome). The agency approved Amondys 45 based on an increase in dystrophin (a protein that helps keep muscle cells intact) production in skeletal muscle observed in patients treated with the therapy. This is the first FDA-approved targeted treatment for patients with this type of mutation. Approximately 8% of patients with DMD have a mutation that is amenable to exon 45 skipping. The most common side effects observed in DMD patients treated with Amondys 45 were upper respiratory tract infections, cough, fever, headache, joint pain and throat pain. Although kidney toxicity was not observed in the Amondys 45 clinical studies, kidney toxicity was observed in the nonclinical studies. Kidney toxicity, including potentially fatal glomerulonephritis, has been observed after administration of some antisense oligonucleotides. Kidney function should be monitored in patients taking Amondys 45. Learn More This is an automated message delivery system. Replying to this message will not reach DDI staff. If you have comments or questions, please contact us at: 1-888-INFO- FDA (1-888-463-6332) or 301-796-3400 from 8:00 am - 4:30 pm ET Monday - Friday. You can also email us at: druginfo@fda.hhs.gov. Stay Connected with U.S. Food and Drug Administration:         SUBSCRIBER SERVICES: Manage Subscriptions  |  Unsubscribe All  |  Help

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