investigator-initiated trial
A clinical study designed, conducted, and sponsored by academic investigators rather than pharmaceutical companies.
Full Definition
An investigator-initiated trial (IIT) is a clinical research study that is conceived, designed, and conducted by academic investigators or healthcare institutions rather than by pharmaceutical or biotechnology companies. While IITs may receive funding or drug supply from industry sponsors, the scientific leadership and operational control remain with the academic investigators. These trials often explore research questions that may not align with commercial interests, such as head-to-head comparisons between existing medications, novel treatment combinations, or studies in special populations. In psychiatric research, IITs frequently investigate practical clinical questions, comparative effectiveness studies, or mechanistic research that advances scientific understanding beyond regulatory requirements.
Usage
Usage note: Can be abbreviated as IIT after first use. Emphasize the academic vs. industry distinction.
In Context
- "This investigator-initiated trial compared the effectiveness of two FDA-approved antidepressants in elderly patients." — study background
- "The investigator-initiated trial received drug supply from the manufacturer but maintained full scientific independence." — funding and sponsorship section