the effect of sequential embryo transfer on pregnancy rate

Comparison of the effect of sequential embryo transfer (at the stage of cleavage and blastocyst) with embryo transfer only at the blastocyct stage on pregnancy rate in patients with recurrent implantation failure

Status

Active, not recruiting

Phases

Phase 2

Study type

Interventional

Source

IRCT

Registry ID

IRCT20160722029027N10

Enrollment

200

Registered

2022-03-14

Start date

2020-11-21

Completion date

Unknown

Last updated

2022-04-04

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

Conditions

infertility. Female infertility, unspecified

Interventions

Intervention 1: Intervention group: In the two-stage embryo transfer group, one embryo is transferred in the cleavage stage on the third day and then on the 5th day, one embryo is transferred in the b

Eligibility

Sex/Gender

Female

Age

20 Years to 45 Years

Inclusion criteria

Inclusion criteria: Women with a history of recurrent implantation failure Age less than 45 years Have at least two three-day-old fetuses

Exclusion criteria

Exclusion criteria: Having any uterine abnormalities

Design outcomes

Primary

Measure	Time frame
Clinical pregnancy. Timepoint: 5-7 weeks of gestation. Method of measurement: sonography.	—

Secondary

Measure	Time frame
Ongoing pregnancy. Timepoint: 20 weeks of gestation. Method of measurement: Ultrasonography.;Clinical abortion. Timepoint: 20 weeks of gestation. Method of measurement: Ultrasonography.	—

Countries

Iran (Islamic Republic of)

Contacts

Public Contactzahra razghandi

Shahid Beheshti University of Medical Sciences

Z.razghandi@gmail.com+98 21 2243 2558

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026