Exploratory trials, involving very limited human exposure, with no therapeutic or diagnostic intent (e.g., screening studies, microdose studies). (Formerly listed as "Phase 0") [ https://prsinfo.clinicaltrials.gov/definitions.html ]
Term information
Exploratory trials, involving very limited human exposure, with no therapeutic or diagnostic intent (e.g., screening studies, microdose studies). (Formerly listed as "Phase 0")
A clinical trial that is at Early Phase 1 or Phase 0
A clinical trial that is at an Early Phase i or Phase 0, which is designed to use an investigational agent that is available only in very limited quantities and which has never previously given to humans or for which there is extremely limited human experience. Phase 0 clinical trials are intended to enable researchers to understand the path of the drug in the body and its efficacy. Adverse event reporting in Phase 0 trials is expedited. [def-source: NCI]
http://purl.obolibrary.org/obo/NCIT_C54721
https://en.wikipedia.org/wiki/Clinical_trial