July
10, 2006--At the 2006 Conference on Adaptive Trial
Design, FDA Deputy Commissioner for Medical and Scientific Affairs
Scott Gottlieb emphasized how important it is to pursue
alternatives to the traditional, highly empiric statistical
approach to conducting clinical trials, by designing ones that can
be adapted.
"Technology
is the great enabler of process change," said Gottlieb, according
to the transcript of his speech, released by the FDA. Tools such
as toxicogenomic assays can provide important information about a
drug's effectiveness and safety. An adaptive trial would generate
and incorporate such information to help guide the more effective
use of medicines. In an adaptive trial, for example, patient
outcomes could be used as they became available to adjust the
allocation of future patients or some other aspect of the study
design.
Recognizing
trepidation on the part of some in industry, Gottlieb described
new steps the FDA is taking to encourage the use of adaptive
designs. "Sponsors need consensus and clarification on
pivotal scientific questions related to when adaptive trial design
is most appropriate," said Gottlieb, citing the need for
sponsors and the FDA to work together.
Toward that end,
FDA leadership is working on a series of guidance documents that
will help articulate the pathway for developing adaptive
approaches to clinical trials. The one likely to be presented
first, perhaps as soon as January 2007, will help guide sponsors
on how to look at multiple endpoints in the same trial.
Gottlieb stated
the FDA is open to new scientific advances in clinical trial
design that enable the agency to learn more about how to safely
guide clinical decisions, and requested help from the broader
community, including patients and product developers. If
information that helps predict response can be better adapted into
the trials themselves, the results will be clinical development
programs that better guide treatment decisions. Said Gottlieb,
"It will enable the day when we are able to reliably deliver
the right drug in the right dose to the right patient." FDA