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What Is The Purpose Of The Orphan Drug Act?, Matthew Herder

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The Orphan Drug Act (ODA) [1], first enacted in the United States in 1983, was set up to encourage the development of drugs for rare diseases. At that time, drug therapies for such diseases were rarely developed. Three decades later, a growing proportion of industry research and development (R&D) [2] and regulatory drug approvals [3] target diseases affecting fewer than 200,000 persons in the United States, the prevalence-based threshold of rare disease under the ODA.

In a new article published in PLOS Medicine, Aaron Kesselheim and colleagues document an embedded trend: within the …