Blastocyste transfer in patients with history of repeated implantation failure

The pregnancy outcome after blastocyst transfer in women with the history of repeated implantation failure in frozen-thawed cycles

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

IRCT

Registry ID

IRCT20110509006420N16

Enrollment

100

Registered

2018-07-30

Start date

2018-07-23

Completion date

Unknown

Last updated

2021-07-12

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

Conditions

infertility. Female infertility

Interventions

Intervention 1: Intervention group: Thawing will be done at least 2 months after cryopreservation. All embryos in group 1 (blastocyst group) transfer to media and extended culturewill be done for 3 da

Eligibility

Sex/Gender

Female

Age

No minimum to 40 Years

Inclusion criteria

Inclusion criteria: Women use frozen embryo transfer History of repeated implantation failure have a minimum of three good quality cryopreserved embryos

Exclusion criteria

Exclusion criteria: History of severe endometriosis History of severe male factor infertility History of endocrine disorder History of hysteroscopic surgery

Design outcomes

Primary

Measure	Time frame
Chemical pregnancy. Timepoint: 15 days after embryo transfer. Method of measurement: Blood laboratory kit.;Clinical pregnancy. Timepoint: 3 weeks after positive beta-h Cg. Method of measurement: Observation of fetal heart activity by transvaginal ultrasonography.	—

Secondary

Measure	Time frame
Miscarriage rate. Timepoint: Loss of pregnancy before 20 gestational week. Method of measurement: Absence of fetal heart activity in ultra sound sonography.	—

Countries

Iran (Islamic Republic of)

Contacts

Public Contactmaryam eftekhar

Yazd University of Medical Sciences

eftekharmaryam@yahoo.com+98 35 3824 7085

Outcome results

None listed

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