deltatrials
Completed OBSERVATIONAL NCT00625066

Biological, Genetic, and Lifestyle Risk Factors for Developing Colorectal Adenomas or Polyps in Participants Undergoing Colonoscopy

Tennessee Colorectal Polyp Study

Sponsor: National Cancer Institute (NCI)

Conditions Colorectal Cancer Precancerous Condition
Interventions biologic sample preservation procedure biopsy cytology specimen collection procedure evaluation of cancer risk factors medical chart review questionnaire administration screening colonoscopy survey administration
Updated 14 times since 2017 Last updated: Dec 11, 2025 Started: Jan 1, 2003 Primary completion: Nov 30, 2025 Completion: Nov 30, 2025
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A observational or N/A phase clinical study on Colorectal Cancer and Precancerous Condition, this trial is completed. The trial is conducted by National Cancer Institute (NCI) and has accumulated 14 data snapshots since 2003. Oncology trials at this stage typically focus on safety, tolerability, and early efficacy signals.

Status Flow

~Jan 2017 – ~Nov 2017 · 10 months · monthly snapshot~Nov 2017 – ~Apr 2018 · 5 months · monthly snapshot~Apr 2018 – ~Jun 2018 · 2 months · monthly snapshot~Jun 2018 – ~Feb 2019 · 8 months · monthly snapshot~Feb 2019 – ~Oct 2020 · 20 months · monthly snapshot~Oct 2020 – ~Jan 2021 · 3 months · monthly snapshot~Jan 2021 – ~Nov 2021 · 10 months · monthly snapshot~Nov 2021 – ~Dec 2022 · 13 months · monthly snapshot~Dec 2022 – ~Dec 2023 · 12 months · monthly snapshot~Dec 2023 – ~Jul 2024 · 7 months · monthly snapshot~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshot~Sep 2024 – ~Dec 2024 · 3 months · monthly snapshot~Dec 2024 – ~Jan 2026 · 13 months · monthly snapshot~Jan 2026 – present · 7 months · monthly snapshot

Change History

14 versions recorded

  1. Jan 2026 — Present [monthly]

    Completed

    Status: Active Not Recruiting → Completed

  2. Dec 2024 — Jan 2026 [monthly]

    Active Not Recruiting

  3. Sep 2024 — Dec 2024 [monthly]

    Active Not Recruiting

  4. Jul 2024 — Sep 2024 [monthly]

    Active Not Recruiting

  5. Dec 2023 — Jul 2024 [monthly]

    Active Not Recruiting

▶ Show 9 earlier versions

  1. Dec 2022 — Dec 2023 [monthly]

    Active Not Recruiting

  2. Nov 2021 — Dec 2022 [monthly]

    Active Not Recruiting

  3. Jan 2021 — Nov 2021 [monthly]

    Active Not Recruiting

  4. Oct 2020 — Jan 2021 [monthly]

    Active Not Recruiting

  5. Feb 2019 — Oct 2020 [monthly]

    Active Not Recruiting

  6. Jun 2018 — Feb 2019 [monthly]

    Active Not Recruiting

  7. Apr 2018 — Jun 2018 [monthly]

    Active Not Recruiting

    Phase: NA → None

  8. Nov 2017 — Apr 2018 [monthly]

    Active Not Recruiting NA

    Status: Unknown Status → Active Not Recruiting

  9. Jan 2017 — Nov 2017 [monthly]

    Unknown Status NA

    First recorded

Jan 2003

Trial started

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

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • National Cancer Institute (NCI)
  • Vanderbilt University
Data source: Vanderbilt University Medical Center

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

Study Locations