deltatrials
Completed PHASE2/PHASE3 NCT00153816

Vitamin D/Calcium Polyp Prevention Study

Sponsor: Dartmouth-Hitchcock Medical Center

Conditions Adenomas Colorectal Cancer Polyps
Interventions Calcium Carbonate Vitamin D3 placebo
Updated 7 times since 2017 Last updated: Feb 6, 2017 Started: Jul 31, 2004 Primary completion: Oct 31, 2013 Completion: Jun 30, 2016

This PHASE2/PHASE3 trial investigates Adenomas and Colorectal Cancer and is currently completed. Dartmouth-Hitchcock Medical Center leads this study, which shows 7 recorded versions since 2004 — indicating limited longitudinal coverage. As an oncology study, it adds to the longitudinal record of treatment development for this indication.

Change History

7 versions recorded

  1. Sep 2024 — Present [monthly]

    Completed PHASE2/PHASE3

  2. Jul 2024 — Sep 2024 [monthly]

    Completed PHASE2/PHASE3

    Phase: PHASE2_PHASE3 → PHASE2/PHASE3

  3. Jan 2021 — Jul 2024 [monthly]

    Completed PHASE2_PHASE3

  4. Jun 2018 — Jan 2021 [monthly]

    Completed PHASE2_PHASE3

  5. May 2017 — Jun 2018 [monthly]

    Completed PHASE2_PHASE3

    Status: Active Not Recruiting → Completed

▶ Show 2 earlier versions

  1. Feb 2017 — May 2017 [monthly]

    Active Not Recruiting PHASE2_PHASE3

  2. Jan 2017 — Feb 2017 [monthly]

    Active Not Recruiting PHASE2_PHASE3

    First recorded

Jul 2004

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • Dartmouth-Hitchcock Medical Center
  • National Cancer Institute (NCI)
Data source: Dartmouth-Hitchcock Medical Center

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

Atlanta, United States, Chapel Hill, United States, Cleveland, United States, Columbia, United States, Denver, United States, Houston, United States, Iowa City, United States, Lebanon, United States, Los Angeles, United States, Minneapolis, United States and 1 more location