NIH has restored access to the ClinicalTrials.gov site during the current lapse in government funding for registration of new clinical trials in order for applicable trials to be in compliance with U.S. Public Law 110-85 (The Food and Drug Administration Amendments Act of 2007). As stated on the Clinical Trials.gov web site:
ClinicalTrials.gov is open, however it is being maintained with minimal staffing due to the lapse in government funding. Information will be updated to the extent possible, with priority given to processing registrations of new trials and critical updates to existing entries, such as trial status and contact information for enrollment. The agency will attempt to respond to urgent operational inquiries.