deltatrials
Completed PHASE4 INTERVENTIONAL 3-arm NCT03755973

Effect of Different Ovarian Stimulation Protocols on Endometrial Receptivity

How do Different Ovarian Stimulation Protocols Affect Endometrial Receptivity During a Fresh In-vitro Fertilization Attempt

Sponsor: Instituto Valenciano de Infertilidade de Lisboa

Conditions Endometrial Diseases Infertility, Female
Interventions CFA Fixed daily rFSH dosing protocol of 200-300 IU Step-down daily rFSH dose rFSH
Updated 16 times since 2018 Last updated: May 31, 2023 Started: Jan 29, 2020 Primary completion: May 22, 2023 Completion: May 22, 2023
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

This PHASE4 trial investigates Endometrial Diseases and Infertility, Female and is currently completed. Instituto Valenciano de Infertilidade de Lisboa leads this study, which shows 16 recorded versions since 2020 — indicating substantial longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.

Status Flow

~Dec 2018 – ~Mar 2019 · 3 months · monthly snapshot~Mar 2019 – ~Jan 2020 · 10 months · monthly snapshot~Jan 2020 – ~Feb 2020 · 31 days · monthly snapshot~Feb 2020 – ~Mar 2020 · 29 days · monthly snapshot~Mar 2020 – ~Aug 2020 · 5 months · monthly snapshot~Aug 2020 – ~Jan 2021 · 5 months · monthly snapshot~Jan 2021 – ~Mar 2021 · 59 days · monthly snapshot~Mar 2021 – ~Apr 2021 · 31 days · monthly snapshot~Apr 2021 – ~Apr 2022 · 12 months · monthly snapshot~Apr 2022 – ~Jun 2022 · 2 months · monthly snapshot~Jun 2022 – ~Apr 2023 · 10 months · monthly snapshot~Apr 2023 – ~Jul 2023 · 3 months · monthly snapshot~Jul 2023 – ~Jul 2024 · 12 months · monthly snapshot~Jul 2024 – ~Sep 2024 · 2 months · monthly snapshot~Sep 2024 – ~Sep 2025 · 12 months · monthly snapshot~Sep 2025 – present · 10 months · monthly snapshot

Change History

16 versions recorded

  1. Sep 2025 — Present [monthly]

    Completed PHASE4

  2. Sep 2024 — Sep 2025 [monthly]

    Completed PHASE4

  3. Jul 2024 — Sep 2024 [monthly]

    Completed PHASE4

  4. Jul 2023 — Jul 2024 [monthly]

    Completed PHASE4

    Status: Active Not Recruiting → Completed

  5. Apr 2023 — Jul 2023 [monthly]

    Active Not Recruiting PHASE4

    Status: Recruiting → Active Not Recruiting

▶ Show 11 earlier versions

  1. Jun 2022 — Apr 2023 [monthly]

    Recruiting PHASE4

  2. Apr 2022 — Jun 2022 [monthly]

    Recruiting PHASE4

  3. Apr 2021 — Apr 2022 [monthly]

    Recruiting PHASE4

  4. Mar 2021 — Apr 2021 [monthly]

    Recruiting PHASE4

  5. Jan 2021 — Mar 2021 [monthly]

    Recruiting PHASE4

  6. Aug 2020 — Jan 2021 [monthly]

    Recruiting PHASE4

  7. Mar 2020 — Aug 2020 [monthly]

    Recruiting PHASE4

    Status: Not Yet Recruiting → Recruiting

  8. Feb 2020 — Mar 2020 [monthly]

    Not Yet Recruiting PHASE4

  9. Jan 2020 — Feb 2020 [monthly]

    Not Yet Recruiting PHASE4

  10. Mar 2019 — Jan 2020 [monthly]

    Not Yet Recruiting PHASE4

  11. Dec 2018 — Mar 2019 [monthly]

    Not Yet Recruiting PHASE4

    First recorded

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • Instituto Valenciano de Infertilidade de Lisboa
  • Merck Sharp & Dohme LLC
Data source: Instituto Valenciano de Infertilidade de Lisboa

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

Study Locations