Policy Punctuations and Regulatory Drug Review

Abstract

The FDA has dramatically decreased the regulatory review time for new drugs since the early 1990s. For example, according to the Tufts University Center for the Study of Drug Development (CSDD), which conducts triennial analyses of new drug approvals in the United States, the average FDA review time for approved New Chemical Entities (NCEs) decreased from 35.6 months in 1984–86 to 16.8 months in 1996–98. Thus, in a little more than a decade, the FDA has essentially cut its average review time in half. In addition to the declining review times, the agency's workload, as measured in terms of the number of drugs approved each year, also rose considerably in the 1990s. Specifically, the agency approved a total of 232 NCEs between 1993 and 1999, compared to just 163 approvals during the previous seven-year span—a 42 percent increase. Figures 1 and 2 illustrate the agency's decreased review times and increased workload, respectively. Thus, over the past decade the FDA has approved more drugs and done so in less time than at any other period in history. Simply stated, this change in regulatory performance, especially the declining review times, has been absolutely stunning.