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NCT01632761 · ClinicalTrials.gov registry record · NA
Effects of Vitamin D and Marine Omega-3 Fatty Acids on Anemia
A NA study of Anemia, sponsored by Brigham and Women's Hospital.
- Active
- Registry status
- NA
- Development phase
- 2,000
- Enrollment target
- 1
- Study location
NCT01632761: Active NA study of Anemia, sponsored by Brigham and Women's Hospital.
NCT01632761 is a NA study of Anemia that is active but no longer recruiting, run by Brigham and Women's Hospital. The registered enrollment target is 2,000 participants, above the 400-participant average among 72 other Anemia trials with a reported enrollment target (400% higher). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT01632761, a NA study of Anemia, is active but no longer recruiting, sponsored by Brigham and Women's Hospital.
- ACTIVE NOT RECRUITING
- Registry status
- NA
- Development phase
- 2,000 participants
- Enrollment target
- 1
- Study location
Study Summary
The VITamin D and OmegaA-3 TriaL (VITAL; NCT01169259) is a randomized clinical trial in 20,000 U.S. men and women studying whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids (Omacor® fish oil, 1 gram) reduces the risk of developing cancer, heart disease, and stroke in people who do not have a prior history of these illnesses. This ancillary study is being conducted among VITAL participants and will study whether vitamin D or fish oil: (A) in the overall VITAL cohort, reduces the number of persons diagnosed with anemia and (B) in a subcohort of 900 participants seen in Boston, effects long-term changes of the proteins in blood in both anemic and non-anemic individuals who provide blood samples at the start of the study and again 2 years later.
Primary Outcome
We will compare the number of participants who took vitamin D supplements who developed anemia and the number of participants who did not take vitamin D who developed anemia to current rates of development of anemia in the U.S. We will further examine whether the effect of vitamin D supplementation on anemia risk varies by race/ethnicity, gender, or baseline levels of 25(OH)D.
Conditions Studied
Interventions
- DIETARY_SUPPLEMENT Vitamin D3 placebo
- DIETARY_SUPPLEMENT Fish oil placebo
- DRUG omega-3 fatty acids (fish oil)
- DIETARY_SUPPLEMENT Vitamin D3 .
Study Locations (1)
Massachusetts
- Brigham and Women's Hospital - Boston
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 2,000 participants |
| Start Date | 2012-11 |
| Est. Completion | 2025-12-28 |
| Phase | NA |
What the registry record for NCT01632761 still lists
NCT01632761 is an interventional study that assigns participants to a tested intervention. Its 2,000 participants enrollment target places it among the larger protocols in the corpus, above the 400-participant average among 72 other Anemia trials with a reported enrollment target (400% higher).
The record links to 1 condition, with Anemia appearing as the primary indexed condition, and to 4 interventions - of which Vitamin D3 placebo is the first listed.
NCT01632761 reports a single indexed study location in Massachusetts.
Frequently Asked Questions
What is clinical trial NCT01632761 about?
NCT01632761 is a clinical study titled "Effects of Vitamin D and Marine Omega-3 Fatty Acids on Anemia". The VITamin D and OmegaA-3 TriaL (VITAL; NCT01169259) is a randomized clinical trial in 20,000 U.S. men and women studying whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids (Omacor® fish oil, 1 gram) reduces the risk of developing cancer, heart disease, and stro...
What is the current status of trial NCT01632761?
This trial is currently active not recruiting. It is a NA study. The enrollment target is 2,000 participants. The study started on 2012-11. Estimated completion is 2025-12-28.
What conditions does trial NCT01632761 study?
This clinical trial studies the following conditions: Anemia.
What interventions are being tested in trial NCT01632761?
The interventions under investigation include: Vitamin D3 placebo (DIETARY_SUPPLEMENT), Fish oil placebo (DIETARY_SUPPLEMENT), omega-3 fatty acids (fish oil) (DRUG), Vitamin D3 . (DIETARY_SUPPLEMENT).
Who is sponsoring clinical trial NCT01632761?
This trial is sponsored by Brigham and Women's Hospital, which has 937 total clinical trials registered on ClinicalTrials.gov.
Where is trial NCT01632761 being conducted?
This trial has 1 study location across Massachusetts. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
Similar trials for Anemia
Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.
Where NCT01632761's enrollment target sits among peer trials
2,000 4th of 72 higher than 69 of 72 other Anemia trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Anemia trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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