First RNAi Therapy Approved by FDA

Alnylam’s patisiran interferes with the production of a mutated protein present in people with hereditary transthyretin amyloidosis.

Written byKerry Grens
| 1 min read

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For the first time, the US Food and Drug Administration has approved a drug based on RNA interference. Patisiran (Onpattro) contains RNA strands that disrupt the production of a protein that clumps up and causes nerve damage in patients with a rare genetic disorder called hereditary transthyretin amyloidosis.

“After 16 years, tireless perseverance through near-death moments, billions of dollars in investment, we’ve finally succeeded in advancing RNAi therapeutics as a whole new class of innovative medicines,” Alnylam CEO John Maraganore says in an email to Xconomy. “What matters most? The difference we can now make in the lives of patients with hATTR amyloidosis.”

Hereditary transthyretin amyloidosis affects about 50,000 people worldwide. The disease is caused by mutations in the gene that codes for the protein transthyretin; the abnormal protein forms deposits in the nervous system. By infusing lipid nanoparticles filled with short interfering RNAs into the ...

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  • kerry grens

    Kerry served as The Scientist’s news director until 2021. Before joining The Scientist in 2013, she was a stringer for Reuters Health, the senior health and science reporter at WHYY in Philadelphia, and the health and science reporter at New Hampshire Public Radio. Kerry got her start in journalism as a AAAS Mass Media fellow at KUNC in Colorado. She has a master’s in biological sciences from Stanford University and a biology degree from Loyola University Chicago.

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