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You can associate any number of trials with one that is currently registered in the CTRP.

How to View Existing Trial Associations

  1. Search for, and select, the trial you want to associate with other trials. For instructions, see Searching for Trials.
  2. On the main menu, click Associated Trials.
    The Associated Trials page may display one or more associated trial records.
    Associated Trials page, listing associated trial records