In 1983, the US government passed the Orphan Drug Act (ODA), which fosters development of treatments for rare diseases affecting fewer than 200,000 individuals. Available through the act are special research grants, a 50% tax credit on clinical trial costs, shorter Food and Drug Administration (FDA) approval times and a guaranteed seven years of patent exclusivity. In terms of spurring orphan drug development, the ODA has been an unequivocal success.
In the decade prior to 1983 only 34 orphan drugs were licensed, whereas since 1983 the Food and Drug Administration...



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