Does Hormonal Pretreatment Improve Egg Development in IVF? A Study Comparing Three Different Approaches

A Comparative Study of Progestin-Only, Combined Oral Contraceptive Pills, and No Pretreatment on Follicular Synchronization and Clinical Outcomes in GnRH Antagonist IVF/ICSI Cycles - Synchronization in ART with Different Pretreatments

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-jRCT1031250192

Enrollment

240

Registered

2025-06-30

Start date

2025-06-28

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infertility Infertility, ART, Controlled ovarian stimulation

Interventions

None listed

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: Patients aged 42 or younger undergoing IVF for the first time

Exclusion criteria

Exclusion criteria: Patients who used other than gonadotropin preparations, and patients with AMH less than 1.2

Design outcomes

Primary

Measure	Time frame
Cumulative live birth rate	—

Secondary

Measure	Time frame
number of oocytes	—

Contacts

Public ContactMassato Kobanawa

Department of Gynecology

masato.kobanawa@gmail.com+81-299-58-3185

Outcome results