Intramuscular Injection of Human Chorionic Gonadotropin in Frozen Embryo Transfer Cycles

Royan Institute

Status: Completed

Conditions: Embryo Implantation

Treatments: Drug: The effect of intramuscular injection of triple doses of human chorionic gonadotropin in frozen embryo transfer cycles

Study type: Interventional

Funder types: Other

Identifiers

NCT04855383

FET-HCG

Details and patient eligibility

About

This study is a randomized controlled clinical trial to compare the pregnancy outcomes of infertile women with frozen embryo transfer. The study population in frozen embryo transfer cycles receive three doses of human chorionic gonadotropin (HCG) to recognize the effectiveness of HCG on pregnancy outcomes in Reproductive Biomedicine Research Center, Royan institute, Tehran Iran.

Full description

During implantation, the biochemical crosstalk between the endometrium and embryo has a very important role. The endometrium secrets cytokines and growth factors that modulate embryonic differentiation and early development. One of the important molecular messages between the embryo and endometrium is human chorionic gonadotropin (HCG). HCG is expressed by the blastocyst before the implantation, while increasingly produced after implantation by the syncytiotrophoblast. In order to study the direct effect of HCG on the endometrium at implantation, this randomized, controlled clinical trial evaluated whether HCG supplementation would be beneficial for pregnancy outcomes of cryopreserved-thawed embryo transfer with estrogen/ progesterone replacement cycles at Royan Institute.

Block randomization method is designed by epidemiologist using STATA software version 13 and the number of blocks considered is 6. The random allocation list for patients is solely available to the epidemiologist. In order to hide the random allocation process, a total of 200 envelopes are prepared, and only the methodologist has been aware of table of random numbers. When the doctor declared the patient's eligibility, the methodologist provided the doctor with the envelope. The group will be selected and based on the type of group mentioned in the envelope.

Enrollment: 200 patients

Sex: Female

Ages: 20 to 40 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Infertile women candidates for frozen embryo transfer
• Age 20-40 years
• Body Mass Index under than 30 Kg/m2
• Having at least three good quality embryos

Exclusion criteria

• Women with hematologic and autoimmune disorders
• Couples with chromosomal and genetic abnormalities
• Women with uterine anomalies
• Women with uterine and ovaries surgical history
• Women with endometriosis and adenomyosis
• Women with hydrosalpinx
• Women with uterine fibroids
• Women with history of recurrent abortion or recurrent implantation failure
• Severe male factor infertility (azoospermia)
• Embryo donation cycle
• Endometrial thickness less than 8 millimeter on the day of embryo transfer

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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200 participants in 2 patient groups

The group of frozen embryo transfer with intramuscular injection of human chorionic gonadotropin.

Experimental group

Description:

In this group, endometrial preparation for embryo transfer will be through the standard protocol using a gonadotropin-releasing hormone agonist. Patients receive 5,000 IU of human chorionic gonadotropin by intramuscular injection, 72 hours before embryo transfer, on the day of embryo transfer, and 72 hours after embryo transfer.

Treatment:

Drug: The effect of intramuscular injection of triple doses of human chorionic gonadotropin in frozen embryo transfer cycles

The group of frozen embryo transfer without intramuscular injection of human chorionic gonadotropin.

No Intervention group

Description:

In this group, endometrial preparation for embryo transfer will be through the standard protocol using a gonadotropin-releasing hormone agonist. Embryo transfer will be done without human chorionic gonadotropin intramuscular injection.