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Use the Update Trial feature when changes to the trial do not substantively affect the scientific conduct of the study, the study design, and/or the sites in which patients are enrolled on the trial. Update Trial also accommodates certain protocol document changes. (For instructions, refer to Protocol Document Updates.)

Use the Amend Trial feature---for Complete trials only---when changes to the trial involve changes to the protocol document that require IRB approval. You can update both trial and participating site information for Industrial/Other trials using the Available Actions column.