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Lead Study Agent
Definition 1
A primary medical product, practice, or application that is tested in a multi-agent clinical study. (NCI Thesaurus)
Definition 2
A product that is being used or tested as part of a study. EXAMPLE(S): Tamoxifen used in a breast cancer study; Fish oil used in a heart health study; Artificial knee joints used in a joint replacement study. NOTE(S): If a study has study agents, presumably one or more of the StudyActivity will use the agent and have studyFocusedIndicator = "Y". (NCI Thesaurus/BRIDG)
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