Unknown PHASE1/PHASE2 INTERVENTIONAL 2-arm NCT00823121

Replacement of Fresh Embryo Transfers (ETs) by Frozen Embryo Transfers (FETs) Using Vitrification

Can Fresh Embryo Transfers be Replaced by Cryopreserved-thawed Embryo Transfers in Assisted Reproductive Cycles?

Sponsor: Yazd Research & Clinical Center for Infertility

Interventions buserelin freezing embryos by vitrification fresh embryo transfers human chorionic gonadotropin (pregnyl) recombinant FSH

Updated 6 times since 2017 Last updated: Jan 19, 2010 Started: Aug 31, 2008 Primary completion: Feb 28, 2009 Completion: Dec 31, 2009

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

Listed as NCT00823121, this PHASE1/PHASE2 trial focuses on In Vitro Fertilization and remains ongoing. Sponsored by Yazd Research & Clinical Center for Infertility, it has been updated 6 times since 2008, reflecting limited change activity. This study adds to the evidence base for this therapeutic area through structured, versioned documentation.

Status Flow

Change History

6 versions recorded

Sep 2025 — Present [monthly]

Unknown PHASE1/PHASE2
Sep 2024 — Sep 2025 [monthly]

Unknown PHASE1/PHASE2
Jul 2024 — Sep 2024 [monthly]

Unknown PHASE1/PHASE2

Status: Unknown Status → Unknown · Phase: PHASE1_PHASE2 → PHASE1/PHASE2
Jan 2021 — Jul 2024 [monthly]

Unknown Status PHASE1_PHASE2
Jun 2018 — Jan 2021 [monthly]

Unknown Status PHASE1_PHASE2

▶ Show 1 earlier version

Jan 2017 — Jun 2018 [monthly]

Unknown Status PHASE1_PHASE2

First recorded

Aug 2008

Trial started

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

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Yazd Research & Clinical Center for Infertility

Data source: Yazd Research & Clinical Center for Infertility

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

Study Locations

• Yazd, Iran