The use of estrogen pretreatment before starting controlled ovarian stimulation in antagonist protocol.

Impact of estrogen pretreatment on the outcome of GnRH antagonist protocol: a prospective randomized multicenter trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

PACTR

Registry ID

PACTR201307000566378

Enrollment

400

Registered

2013-06-18

Start date

2013-08-01

Completion date

Unknown

Last updated

2026-09-14

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

Conditions

Fertility-female Infertile women undergoing ICSI

Interventions

No Estrogen

Estrogen

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: Regular cycles (26¿35days) Day 3 FSH 6. First or second ICSI attempt.

Exclusion criteria

Exclusion criteria: History of low ovarian response in an earlier ICSI attempt. Recurrent implantation failure

Design outcomes

Primary

Measure	Time frame
Clinical pregnancy with cardiac pulsation	—

Secondary

Measure	Time frame
Cycle cancellation;Abortion	—

Countries

Egypt, Libyan Arab Jamahiriya

Contacts

Public ContactElsayedamr Basma

Patient Information Manager

elsayedamr@yahoo.com00201223106023

Outcome results

None listed

Source: PACTR (via WHO ICTRP) · Data processed: Sep 19, 2026