Nearly all later entrants to drug classes had begun clinical testing or were in regulatory review in the United States before the first drug within a pharmacologic class was approved, a newly completed analysis from the Tufts Center for the Study of Drug Development suggests.
The analysis looked at 40 pharmacologic classes and included drugs and biologics between the 2005 - 2011 period, where 90% of all later-in-class drugs had at least initiated Phase I clinical testing anywhere in the world or had filed an investigational new drug application with the U.S. Food and Drug Administration (FDA) before FDA approval for the first-in-class drug, according to Tufts CSDD.
Key findings from the studies, reported in the November/December Tufts CSDD Impact Report, included the following:
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