Clinical trials
Phase 1 Vitamin D Deficiency trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
42 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2007 | 2 |
| 2008 | 2 |
| 2009 | 1 |
| 2010 | 5 |
| 2011 | 2 |
| 2012 | 3 |
| 2013 | 2 |
| 2014 | 3 |
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 6 |
| 2022 | 1 |
| 2024 | 1 |
| 2025 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 26 |
| Unknown status | 9 |
| Terminated | 5 |
| Recruiting | 1 |
| Withdrawn | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Second Affiliated Hospital of Wenzhou Medical University | 3 |
| Chinese Academy of Sciences | 2 |
| University of California, Los Angeles | 2 |
| Ain Shams University | 1 |
| Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute) | 1 |
| Amany Keruakous, MD, MS. | 1 |
| Arizona State University | 1 |
| Augusta University | 1 |
| Boston University | 1 |
| CONRAD | 1 |
Top conditions
MeSH conditions the trials were registered with, not their broader categories. A condition with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Vitamin D Deficiency | 42 |
| Crohn Disease | 5 |
| Obesity | 3 |
| Hyperparathyroidism, Primary | 2 |
| Insulin Resistance | 2 |
| Acquired Immunodeficiency Syndrome | 1 |
| Acromegaly | 1 |
| Alzheimer Disease | 1 |
| Asthma | 1 |
| Bone Diseases, Metabolic | 1 |
Trials
Showing 76 to 42 of 42. Each trial links to its page on Pharma Observatory.
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Recently changed trials
Changes observed in the last 7 days, newest first, site-count changes left out. Source: ClinicalTrials.gov.
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