deltatrials
Completed OBSERVATIONAL NCT00569543

Effect of Tamoxifen or an Aromatase Inhibitor on Estrogen Metabolism in Women Treated for Newly Diagnosed Breast Cancer

Effects of Therapeutic Agents on Estrogens in the Breast

Sponsor: National Cancer Institute (NCI)

Conditions Breast Cancer
Interventions high performance liquid chromatography laboratory biomarker analysis mass spectrometry medical chart review
Updated 11 times since 2017 Last updated: Aug 29, 2023 Started: May 11, 2005 Primary completion: Aug 2, 2012 Completion: Aug 2, 2012
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

Listed as NCT00569543, this observational or N/A phase trial focuses on Breast Cancer and remains completed. Sponsored by National Cancer Institute (NCI), it has been updated 11 times since 2005, reflecting substantial change activity. This study contributes to the evolving evidence base for cancer treatment protocols.

Status Flow

~Jan 2017 – ~Aug 2017 · 7 months · monthly snapshotCompleted~Aug 2017 – ~Apr 2018 · 8 months · monthly snapshotCompleted~Apr 2018 – ~May 2018 · 30 days · monthly snapshotCompleted~May 2018 – ~Jun 2018 · 31 days · monthly snapshotCompleted~Jun 2018 – ~Nov 2020 · 29 months · monthly snapshotCompleted~Nov 2020 – ~Jan 2021 · 2 months · monthly snapshotCompleted~Jan 2021 – ~Dec 2021 · 11 months · monthly snapshotCompleted~Dec 2021 – ~Oct 2023 · 22 months · monthly snapshotCompleted~Oct 2023 – ~Jul 2024 · 9 months · monthly snapshotCompleted~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshotCompleted~Sep 2024 – present · 22 months · monthly snapshotCompleted

Change History

11 versions recorded

  1. Sep 2024 — Present [monthly]

    Completed

  2. Jul 2024 — Sep 2024 [monthly]

    Completed

  3. Oct 2023 — Jul 2024 [monthly]

    Completed

  4. Dec 2021 — Oct 2023 [monthly]

    Completed

  5. Jan 2021 — Dec 2021 [monthly]

    Completed

▶ Show 6 earlier versions

  1. Nov 2020 — Jan 2021 [monthly]

    Completed

  2. Jun 2018 — Nov 2020 [monthly]

    Completed

  3. May 2018 — Jun 2018 [monthly]

    Completed

  4. Apr 2018 — May 2018 [monthly]

    Completed

    Phase: NA → None

  5. Aug 2017 — Apr 2018 [monthly]

    Completed NA

  6. Jan 2017 — Aug 2017 [monthly]

    Completed NA

    First recorded

May 2005

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)
  • University of Nebraska
Data source: University of Nebraska

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

Study Locations