What You Need to Know About ClinicalTrials.gov Registration
In order to register a clinical trial in the National Library of Medicine’s (NLM) ClinicalTrials.gov registry, you or your designee will need to have a Protocol Registration System (PRS) individual or organization account. This account will allow you to create and update your clinical trials records as necessary. More details are available on the PRS website.
Guidance available from NIH on roles and responsibilities regarding ClinicalTrials.gov
From the NIH Office of Extramural Research: