Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
NCT02603757 · ClinicalTrials.gov registry record · NA
Effectiveness of High Dose Vitamin D Supplementation in Stage III Colorectal Cancer
A NA study, sponsored by Legacy Health System.
- Completed
- Registry status
- NA
- Development phase
- 70
- Enrollment target
NCT02603757: Completed NA study, sponsored by Legacy Health System.
NCT02603757 is a NA study that has completed, run by Legacy Health System. The registered enrollment target is 70 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (95% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT02603757, a NA study, has completed, sponsored by Legacy Health System.
- COMPLETED
- Registry status
- NA
- Development phase
- 70 participants
- Enrollment target
Study Summary
This is a pilot study to test whether there is an association between baseline Vitamin D levels, Vitamin D supplementation and survival in patients with stage III colon and stage II/III rectal cancer receiving chemotherapy. 70 patients with colon stage III or rectal stage II or III cancer that require chemotherapy will be screened and 60 patients will be enrolled. Patients will be randomized to standard dose (2000 IU daily) or high-dose (50,000 IU weekly) Vitamin D supplementation for 1 year after initiation of chemotherapy. Patients' Vitamin D levels will be checked throughout supplementation then followed for 5 years with occasional Vitamin D testing and surveying in order to collect information on recurrence and survival outcomes.
Interventions
- DIETARY_SUPPLEMENT cholecalciferol
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 70 participants |
| Start Date | 2016-03 |
| Est. Completion | 2020-06 |
| Phase | NA |
What the finished NCT02603757 record still lists
NCT02603757 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 70 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (95% lower).
The record links to 0 conditions, and to 1 intervention - of which cholecalciferol is the first listed.
NCT02603757 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT02603757 about?
NCT02603757 is a clinical study titled "Effectiveness of High Dose Vitamin D Supplementation in Stage III Colorectal Cancer". This is a pilot study to test whether there is an association between baseline Vitamin D levels, Vitamin D supplementation and survival in patients with stage III colon and stage II/III rectal cancer receiving chemotherapy. 70 patients with colon stage III or rectal stage II or III cancer that requi...
What is the current status of trial NCT02603757?
This trial is currently completed. It is a NA study. The enrollment target is 70 participants. The study started on 2016-03. Estimated completion is 2020-06.
What interventions are being tested in trial NCT02603757?
The interventions under investigation include: cholecalciferol (DIETARY_SUPPLEMENT).
Who is sponsoring clinical trial NCT02603757?
This trial is sponsored by Legacy Health System, which has 21 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT02603757's enrollment target sits among peer trials
70 1103rd of 2000 higher than 868 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA 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
Nationwide trials with similar profiles
Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.
Similar enrollment target
- NCT00969111 · 70 participants · NA
Postoperative or Salvage Radiotherapy (RT) for Node Negative Prostate Cancer Following Radical Prostatectomy
- NCT01712620 · 70 participants · Phase 2
Spironolactone for Pulmonary Arterial Hypertension
- NCT02143830 · 70 participants · Phase 2
HSCT for Patients With Fanconi Anemia Using Risk-Adjusted Chemotherapy
- NCT02601339 · 70 participants
NIRS Monitoring in Premature Infants
Similar registry start date
- NCT05988463 · started 2027-01-01 · Phase 1
Dose-Escalation Study of Artesunate Patients With IPF
- NCT07219706 · started 2026-12-10 · NA
Dietary Fiber and Time Restricted Eating
- NCT02831335 · started 2026-12-01
Technical Development of Multi-Parametric Renocerebral MRI
- NCT05962346 · started 2026-12 · NA
Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia