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BOSTON - Sept. 12, 2017 - Although the rate at which investigational drugs received marketing approval in the United States has declined in recent years, the cardiovascular approval rate trailed other drug approvals as a whole, while the time needed to develop cardiovascular drugs rose, according to a recently completed study conducted by the Tufts Center for the Study of Drug Development.
Approval success rates for cardiovascular compounds fell from about 5.2% for compounds that began clinical testing during 1995-00, to about 2.2% for those that started trials during 2001-07, a 58% decline, according to the study. That compares to a decline from 13.9% to 12.9% for non-cardiovascular compounds.
During the same period, mean clinical development time for cardiovascular drug approvals lengthened nearly two years from 1999-04 to 2005-10, and increased another 7% from 2005-10 to 2011-16.
Those trends together accounted for a drop of cardiovascular products as a share of new drug approvals in the U.S. According to Tufts CSDD, new cardiovascular drugs accounted for 27% of all U.S. new drug approvals in the 1980s, but only 13% during 2010-16.
The findings were reported in the September/October Tufts CSDD Impact Report, released September 12.
"Demand for new cardiovascular drugs will continue, but developers seem to be shifting investments to other therapeutic areas, in part, in response to lengthening development times and lower approval rates associated with cardiovascular products," noted Joseph A. DiMasi, director of economic analysis at Tufts CSDD and the study's author.
He said rising development costs and regulatory uncertainty are among the factors that have increased development challenges for cardiovascular drugs.
Other findings from the study include the following:
ABOUT THE TUFTS CENTER FOR THE STUDY OF DRUG DEVELOPMENT
The Tufts Center for the Study of Drug Development at Tufts University provides strategic information to help drug developers, regulators, and policy makers improve the quality and efficiency of pharmaceutical development, review, and utilization. Tufts CSDD, based in Boston, conducts a wide range of in-depth analyses on pharmaceutical issues and hosts symposia, workshops, and public forums, and publishes Tufts CSDD Impact Reports, a bi-monthly newsletter providing analysis and insight into critical drug development issues.
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