Vitamin D Metabolism and the Williams Syndrome
Sponsor: National Center for Research Resources (NCRR)
This observational or N/A phase trial investigates Williams Syndrome and is currently completed. National Center for Research Resources (NCRR) leads this study, which shows 6 recorded versions since 2026 — indicating limited longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.
Status Flow
Change History
6 versions recorded-
Sep 2024 — Present [monthly]
Completed
-
Jul 2024 — Sep 2024 [monthly]
Completed
-
Jan 2021 — Jul 2024 [monthly]
Completed
-
Jun 2018 — Jan 2021 [monthly]
Completed
-
Apr 2018 — Jun 2018 [monthly]
Completed
Phase: NA → None
▶ Show 1 earlier version
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Jan 2017 — Apr 2018 [monthly]
Completed NA
First recorded
Eligibility Summary
No eligibility information available.
Contact Information
- National Center for Research Resources (NCRR)
For direct contact, visit the study record on ClinicalTrials.gov .