Fixed Versus Flexible Gonadotropin-releasing Hormone (GnRH) Antagonist Initiation
Fixed Versus Flexible GnRH Antagonist Initiation
1 other identifier
interventional
146
1 country
1
Brief Summary
This is a comparison of pregnancy achievement between two GnRH antagonist protocols which differ in the timing of GnRH antagonist initiation.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_4
Started Jun 2005
Typical duration for phase_4
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
June 1, 2005
CompletedFirst Submitted
Initial submission to the registry
November 13, 2007
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 1, 2008
CompletedStudy Completion
Last participant's last visit for all outcomes
March 1, 2008
CompletedFirst Posted
Study publicly available on registry
November 2, 2009
CompletedNovember 2, 2009
October 1, 2009
2.6 years
November 13, 2007
October 30, 2009
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Luteinizing hormone rise
3-14 days (duration of ovarian stimulation)
Study Arms (2)
fixed
ACTIVE COMPARATORflexible
EXPERIMENTALInterventions
flexible antagonist administration according to specified criteria
Eligibility Criteria
You may qualify if:
- \< 39 years of age
- BMI 18.5-29.9
- \<= 3 previous IVF cycles
You may not qualify if:
- PCOS
- Endometriosis
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Unit for Human Reproduction
Thessaloniki, Greece
Related Publications (1)
Kolibianakis EM, Venetis CA, Kalogeropoulou L, Papanikolaou E, Tarlatzis BC. Fixed versus flexible gonadotropin-releasing hormone antagonist administration in in vitro fertilization: a randomized controlled trial. Fertil Steril. 2011 Feb;95(2):558-62. doi: 10.1016/j.fertnstert.2010.05.052. Epub 2010 Jul 16.
PMID: 20637457DERIVED
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Efstratios Kolibianakis
Unit for Human Reproduction
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
Study Record Dates
First Submitted
November 13, 2007
First Posted
November 2, 2009
Study Start
June 1, 2005
Primary Completion
January 1, 2008
Study Completion
March 1, 2008
Last Updated
November 2, 2009
Record last verified: 2009-10