|Who can update a trial?||Only the trial owner. A trial may have more than one owner. To request ownership of a trial, contact your Site Administrator. (If you are a Site Administrator, refer to Managing Trial Ownership.)|
|What types of trials can be updated?||Only trials that have been registered with the CTRP previously.|
|At which trial processing statuses can a trial be updated?||Only trials that have been previously accepted. (That is, the processing status must be Accepted or a subsequent processing status.) For information, refer to Trial Processing Statuses.|
|Which parts of a trial record can be updated?||Only a subset of the information included with the original trial submission. For details, refer to Trial Attributes You Can Update.|
|What types of changes can be made as a trial update?||Only changes that do not require For examples, refer to approval.Examples of Protocol Document Updates.|
You can also update the trial status and trial status start/completion dates without having to update other trial details. For instructions, refer to Updating Trial Statuses.
For instructions, refer to the following pages: