Gamete Treatment to Correct Fertilization Failure

Not Applicable

Recruiting

• Conditions: Infertility

• Registration Number: NCT01944332
• Lead Sponsor: Weill Medical College of Cornell University

Brief Summary

In this proposed research study, the investigators plan to assess the efficacy of gametes' (egg and sperm) treatment on fertilization as well as pre- and post-implantation embryo development.

Detailed Description

The spermatozoa will be prepared in the standard fashion and utilized for injection after exposure to a membrane permeabilizing agent. The raw sperm specimen may be selected through a synthetic, sterile, single-use, culture-tested mesh. The specimen will then be placed in a 37°C environment. After 30 minutes, the selected portion is retrieved from the other side of the mesh. The spermatozoa will be prepared in the standard fashion will be utilized for injection or intrauterine insemination. Human recombinant PLC-zeta will also be used if the spermatozoa have been confirmed to be PLC-zeta deficient.

The injected oocytes will be then exposed to the previously mentioned activating agents for the purpose of inducing embryo development. The successfully fertilized oocytes will be further kept in culture for up to 5 days as per standard IVF/ICSI. Results in terms of fertilization and embryo cleavage will be assessed and monitored for the remainder of the culture period. Developing embryos selected according to standard criteria will be replaced to the patient or will be cryopreserved.

Because fertilization failure carries such a high emotional and financial toll on our patients, at the present time, the only method to generate an embryo for these cases is to perform assisted oocyte activation in conjunction with ICSI. The research intervention - assisted oocyte activation - is believed to help alleviate the failed fertilization by obtaining some zygotes for the patient. In these cases of complete failed fertilization, intracytoplasmic sperm injection (ICSI) will be performed as a routine clinical treatment even if they are not enrolled in the study. After several failures, their reproductive physician may recommend the use of donor spermatozoa instead of the male partner's.

Study Timeline

• Study Start: 2007-09
• Study First Submitted: 2013-07-08
• Study First Submitted QC: 2013-09-12
• Study First Posted: 2013-09-17
• Status Verified: 2025-01
• Last Update Submitted: 2025-01-22
• Last Update Posted: 2025-01-23
• Primary Completion: 2027-06-30
• Study Completion: 2027-11-30

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 1200

Inclusion Criteria

• Patients with complete fertilization failure with standard IVF or failure with one prior ICSI treatment cycle

Exclusion Criteria

• not meeting inclusion criteria
• IVF without ICSI

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SEQUENTIAL

Primary Outcome Measures

Name	Time	Method
Fertilization rate	2 months	Efficacy of gamete treatment on fertilization

Trial Locations

Locations (1)

Center fo Reproductive Medicine; 🇺🇸 New York, New York, United States