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Amyotrophic lateral sclerosis (ALS) is a severe progressive, neurodegenerative disease. It is also rare, and has been the focus of substantial efforts to develop new therapies in recent years. As such, ALS could provide a useful example for exploring the potential impact of financial incentives to encourage the development of drugs for rare diseases, which were introduced in the United States 40 years ago with the passage of the Orphan Drug Act.
The authors declare no competing interests. This article reflects the views of the authors and should not be construed to represent the FDA’s views or policies.