Prolonged Protocol of Early Follicular or Mid Luteal Phase

Not Applicable

• Conditions: IVF
• Interventions: Other: Change the injection time of long acting GnRH-a

• Registration Number: NCT04522479
• Lead Sponsor: Second Affiliated Hospital of Wenzhou Medical University

Brief Summary

Due to the injection of gonadotropin releasing hormone agonist (GnRH-a) before controlled ovarian hyperstimulation (COH), the scheme of prolonged early follicular period protocol has obvious advantages in achieving ideal egg number, increasing endometrial receptivity to embryo transfer, inhibiting endogenous luteinizing hormone (LH) peak and reducing cycle cancellation rate. The full dose of long acting GnRH-a was also applied before COH in the mid luteal Hypergrowth program, and the mechanism of its lowering tone was similar. But whether the clinical and perinatal outcome of early follicular hyperlengthening is as effective as that of mid luteal hyperlengthening has not been reported at home and abroad. Moreover, there is a lack of prospective randomized controlled studies.

Detailed Description

One injection of 3.75mg GnRHa was injected on the 1st-3rd or 21st-23rd day of menstruation. The level of estradiol (E2), progesterone (P), luteinizing hormone (LH) in peripheral blood and the number of follicles in bilateral ovarian internal sinuses were monitored on the 32nd-38th day after pituitary hyporegulation.Gonadotropin (Gn) will be given after pituitary desensitization. When the diameter of at least two follicles ≥ 18mm or more than three follicles ≥ 17mm, the trigger of human chorionic gonadotropin (hCG) will be given and oocyte will be retrieved. The selective fresh single blastocyst transplantation will be carried out on the 4th-6th day after oocyte retrieval. HCG test at 12nd day after transplatation. Follow-up investigation will given during the pregnancy and perinatal period.

Study Timeline

• Study Start: 2020-05-13
• Study First Submitted: 2020-07-17
• Status Verified: 2020-08
• Study First Submitted QC: 2020-08-18
• Last Update Submitted: 2020-08-18
• Study First Posted: 2020-08-21
• Last Update Posted: 2020-08-21
• Primary Completion: 2023-05-13
• Study Completion: 2024-05-13

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: Female
• Target Recruitment: 1150

Inclusion Criteria

1. Tubal factor infertility;
2. polycystic ovary (PCO) or polycystic ovary syndrome (PCOS) patients;
3. Patients of mild to moderate endometriosis；
4. Oligoasthenospermia in male；
5. More than 5 antral follicle count (AFC) on both ovaries；
6. Unexplained infertility: there is a history of no contraception and pregnancy for more than 1 year, no clear cause of infertility such as ovulation, fallopian tube, endometrium and male factors is found, or the above factors return to normal after treatment.

Exclusion Criteria

1. History of adverse pregnancy and childbirth；
2. Unilateral ovariectomy；
3. Uterine malformation, intrauterine adhesion, submucous myoma；
4. Chromosomal abnormality of both husband and wife；
5. Patients with contraindications of assisted reproductive technology or pregnancy: such as uncontrolled diabetes mellitus, undiagnosed liver and kidney dysfunction, history of deep vein thrombosis, history of pulmonary embolism, history of cerebrovascular accident, uncontrolled hypertension, heart disease, suspected cervical cancer, endometrial cancer, breast cancer or previous history, undetermined vaginal bleeding;
6. Unable to be regularly follow up；
7. Participating in other clinical trials；
8. No fresh single blastocyst transfer.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
prolonged protocol of middle luteal phase	Change the injection time of long acting GnRH-a	Inject a full dose of GnRH-a in 21st-23rd day of menstruation (leuprorelin acetate, injection, 3.75mg), the level of E2, P, LH in peripheral blood and the number of follicles in bilateral internal ovarian sinuses were monitored 32-38 days after the depression. If the pituitary desensitization was achieved, Gn (recombinant human follicle stimulating hormone or urofollicle stimulating hormone, injection, 75-300iu) was used for contralled hyperstimulation, when the diameter of 2 follicles was ≥ 18mm，hCG (human chorionic gonadotropin, injection, 4000-10000IU) was used to trigger and retrieve the oocyte. Selective single blastocyst transplantation was performed on the 4th-6th day after the oocyte retrieved. β-hCG was detected on the 12th day after embryo transplantation, and pregnancy or not was judged. If patients get pregnancy, follow-up was continued until the 42nd day after baby delivery.

Primary Outcome Measures

Name	Time	Method
live birth rate	live birth of more than 28 pregnancy weeks	live birth rate per transplantation cycle

Secondary Outcome Measures

Name	Time	Method
Incidence rate of early on-set severe ovarian hyperstimulation syndrome (OHSS)	Severe ovarian hyperstimulation syndrome according to Golan standard within 7 days after ovum removal	Severe ovarian hyperstimulation syndrome according to Golan standard
clinical pregnancy rate	fetal heart beat confirmed by transvaginal ultrasound 26-35 days after embryo transplantation	fetal heart beat confirmed by transvaginal ultrasound
Perinatal complications	Incidence rate of mother and child complications from pregnancy to postpartum in 42 days	Perinatal complications of mothers and fetus
good quality blastocyst rate	The ratio of good quality blastocysts above 4BB degree 4-6 days after oocyte collection	formation rate of more than 4BB Blastocyst
Early misscarage rate	Abortion before 12 pregnancy weeks	Transvaginal sonography identified patients with abortion after clinical pregnancy

Trial Locations

Locations (1)

The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University; 🇨🇳 Wenzhou, Zhejiang, China