Pre-approval Access Terminology: A Cause for Confusion and a Danger to Patients

Abstract

Background: Patients who are seriously ill and have run out of available treatment options may seek access to investigational agents that have not yet been fully vetted by regulatory agencies for safety and efficacy and approved for use in human subjects. Over time, a variety of terms have evolved internationally to denote mechanisms for providing access to such unapproved investigational agents. The lack of consistency in terminology used to describe this process is confusing at best and, at worst, possibly even detrimental to patients.

Methods: To highlight variation around the globe in terminology denoting pre-approval access to investigational agents, we conducted extensive Internet searches to locate specific legislation, guidance, or policy documents describing access mechanisms in numerous countries. We created a table of results intended to convey a sampling of international terminological diversity.

Results: The profusion of terms used internationally to indicate pre-approval access to investigational agents is evident. We recommend a shift toward the use of "pre-approval access" as an umbrella term encompassing all forms of access to unapproved agents. We also recommend use of the phrases "individual/named patient regulatory routes for pre-approval access" and "group/cohort regulatory routes for pre-approval access" to differentiate between pre-approval access programs designed for single patients, versus those designed for groups of patients.

Conclusions: There is a pressing need to revisit and better align pre-approval access terminology at the international level. Adopting the umbrella term "pre-approval access" may be a useful strategy for initiating and promoting harmonization of terms to reduce potential confusion by patients and health care decision makers regarding experimental treatment options.

Keywords: compassionate use; expanded access; experimental drugs; global health; health policy.