deltatrials
Completed EARLY_PHASE1 INTERVENTIONAL 1-arm NCT03734653

Testosterone Therapy in Castration Resistant Prostate Cancer

Square Wave Testosterone Therapy in Castration Resistant Prostate Cancer

Sponsor: Cancer League of Colorado

Conditions Castration-Resistant Prostate Cancer Prostate Cancer
Interventions Standard of Care, Enzalutamide Transdermal Testosterone
Updated 18 times since 2018 Last updated: Nov 4, 2025 Started: Jan 18, 2019 Primary completion: Aug 14, 2024 Completion: Sep 30, 2025
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A EARLY_PHASE1 clinical study on Castration-Resistant Prostate Cancer and Prostate Cancer, this trial is completed. The trial is conducted by Cancer League of Colorado and has accumulated 18 data snapshots since 2019. Oncology trials at this stage typically focus on safety, tolerability, and early efficacy signals.

Status Flow

~Dec 2018 – ~Feb 2019 · 2 months · monthly snapshot~Feb 2019 – ~Mar 2019 · 28 days · monthly snapshot~Mar 2019 – ~Apr 2019 · 31 days · monthly snapshot~Apr 2019 – ~Aug 2019 · 4 months · monthly snapshot~Aug 2019 – ~Oct 2020 · 14 months · monthly snapshot~Oct 2020 – ~Jan 2021 · 3 months · monthly snapshot~Jan 2021 – ~Jun 2021 · 5 months · monthly snapshot~Jun 2021 – ~Feb 2022 · 8 months · monthly snapshot~Feb 2022 – ~Jun 2022 · 4 months · monthly snapshot~Jun 2022 – ~Mar 2023 · 9 months · monthly snapshot~Mar 2023 – ~Jan 2024 · 10 months · monthly snapshot~Jan 2024 – ~Apr 2024 · 3 months · monthly snapshot~Apr 2024 – ~Jul 2024 · 3 months · monthly snapshot~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshot~Sep 2024 – ~Oct 2024 · 30 days · monthly snapshot~Oct 2024 – ~Apr 2025 · 6 months · monthly snapshot~Apr 2025 – ~Dec 2025 · 8 months · monthly snapshot~Dec 2025 – present · 7 months · monthly snapshot

Change History

18 versions recorded

  1. Dec 2025 — Present [monthly]

    Completed EARLY_PHASE1

    Status: Active Not Recruiting → Completed

  2. Apr 2025 — Dec 2025 [monthly]

    Active Not Recruiting EARLY_PHASE1

  3. Oct 2024 — Apr 2025 [monthly]

    Active Not Recruiting EARLY_PHASE1

  4. Sep 2024 — Oct 2024 [monthly]

    Active Not Recruiting EARLY_PHASE1

  5. Jul 2024 — Sep 2024 [monthly]

    Active Not Recruiting EARLY_PHASE1

▶ Show 13 earlier versions

  1. Apr 2024 — Jul 2024 [monthly]

    Active Not Recruiting EARLY_PHASE1

  2. Jan 2024 — Apr 2024 [monthly]

    Active Not Recruiting EARLY_PHASE1

    Status: Recruiting → Active Not Recruiting

  3. Mar 2023 — Jan 2024 [monthly]

    Recruiting EARLY_PHASE1

    Status: Active Not Recruiting → Recruiting

  4. Jun 2022 — Mar 2023 [monthly]

    Active Not Recruiting EARLY_PHASE1

  5. Feb 2022 — Jun 2022 [monthly]

    Active Not Recruiting EARLY_PHASE1

  6. Jun 2021 — Feb 2022 [monthly]

    Active Not Recruiting EARLY_PHASE1

    Status: Recruiting → Active Not Recruiting

  7. Jan 2021 — Jun 2021 [monthly]

    Recruiting EARLY_PHASE1

  8. Oct 2020 — Jan 2021 [monthly]

    Recruiting EARLY_PHASE1

  9. Aug 2019 — Oct 2020 [monthly]

    Recruiting EARLY_PHASE1

  10. Apr 2019 — Aug 2019 [monthly]

    Recruiting EARLY_PHASE1

  11. Mar 2019 — Apr 2019 [monthly]

    Recruiting EARLY_PHASE1

  12. Feb 2019 — Mar 2019 [monthly]

    Recruiting EARLY_PHASE1

    Status: Not Yet Recruiting → Recruiting

  13. Dec 2018 — Feb 2019 [monthly]

    Not Yet Recruiting EARLY_PHASE1

    First recorded

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • Cancer League of Colorado
  • University of Colorado, Denver
Data source: University of Colorado, Denver

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

Study Locations