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Study examines expedited FDA drug approvals, safety questions remain

Date:
October 28, 2013
Source:
American Medical Association (AMA)
Summary:
Fewer patients were studied as part of expedited reviews of new drugs approved by the U.S. Food and Drug Administration (FDA) in 2008, and some safety questions remain unanswered, according to a study published.

Fewer patients were studied as part of expedited reviews of new drugs approved by the U.S. Food and Drug Administration (FDA) in 2008 and some safety questions remain unanswered, according to a study published by JAMA Internal Medicine, a JAMA Network publication.

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The FDA is authorized to make new drugs available more quickly if they would be a significant therapeutic advancement and if they fulfill unmet therapeutic needs for serious illnesses, according to the study background.

Thomas J. Moore, A.B., of the Institute for Safe Medication Practices, Alexandria, Va., and Curt D. Furberg, M.D., Ph.D., of the Wake Forest School of Medicine, Winston-Salem, N.C., examined development times, clinical testing, post-market follow-up and safety risks for the new drugs approved by the FDA in 2008, when most provisions of current law, regulation and policies were in effect.

That year, the FDA approved 20 therapeutic drugs (eight under expedited review and 12 under standard review). The study findings indicate that expedited drugs took a median (midpoint) of 5.1 years of clinical development to get marketing approval compared with 7.5 years for the drugs that underwent standard review, according to the study results.

The expedited drugs were tested for efficacy in a median 104 patients compared with a median 580 patients for standard review. By 2013, many postmarketing studies to gather additional evidence on the safety of expedited drugs had not been completed, according to researchers.

"The testing of new drugs has shifted from a situation in which most testing was conducted prior to initial approval to a situation in which many innovative drugs are more rapidly approved after a small trial in a narrower patient population with extensive additional testing conducted after approval," the authors conclude. "Our findings suggest that the shift has made it more difficult to balance the benefits and risks of new drugs. Further systematic assessment of the standards and procedures for testing new drugs is needed." 


Story Source:

The above story is based on materials provided by American Medical Association (AMA). Note: Materials may be edited for content and length.


Journal Reference:

  1. Thomas J. Moore. Development Times, Clinical Testing, Postmarket Follow-up, and Safety Risks for the New Drugs Approved by the US Food and Drug Administration. JAMA Internal Medicine, 2013; DOI: 10.1001/jamainternmed.2013.11813

Cite This Page:

American Medical Association (AMA). "Study examines expedited FDA drug approvals, safety questions remain." ScienceDaily. ScienceDaily, 28 October 2013. <www.sciencedaily.com/releases/2013/10/131028162044.htm>.
American Medical Association (AMA). (2013, October 28). Study examines expedited FDA drug approvals, safety questions remain. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2013/10/131028162044.htm
American Medical Association (AMA). "Study examines expedited FDA drug approvals, safety questions remain." ScienceDaily. www.sciencedaily.com/releases/2013/10/131028162044.htm (accessed October 25, 2014).

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