Closed Vitrification of Oocytes

Status Withdrawn

Clinical Trial Summary

This study is aimed to evaluate the use of a closed device for storage of vitrified oocytes.

Clinical Trial Description

The Cryotop method for oocyte vitrification is classified as "open system", which means that it requires direct contact with liquid nitrogen during the vitrification process. The system has an external straw to protect the samples during storage, but the device is not hermetically sealed. Instead closed systems are devices that are hermetically sealed before vitrification and remain sealed during storage. Open systems have proven highly effective in achieving similar outcomes with vitrified oocytes compared to those achieved with fresh ones. On the contrary, closed systems have failed to be as effective as open ones when used for oocyte vitrification. Although open systems have proven to be highly efficient, where many other methods have failed, they have been related to a theoretical risk of contamination due to direct contact with liquid nitrogen. Though to date there have been no reported cases of transmission of disease after cryo-transfers either for slow freezing or vitrification, some European countries prohibit the use of open systems for vitrification. In this study, we will evaluate the results after the donor oocyte vitrification, using a modification of a current device (Cryotop®), which makes it capable of being hermetically sealed. The current study is a prospective randomized trial aimed to assess the outcome of ovum donation cycles conducted with vitrified oocytes using the closed device versus oocytes vitrified using the traditional open device. ;

Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)

Related Conditions & MeSH terms

Infertility

Clinical Trial Details

NCT number	NCT01745536
Study type	Interventional
Source	Instituto Valenciano de Infertilidad, IVI VALENCIA
Contact
Status	Withdrawn
Phase	N/A
Start date	November 2012
Completion date	October 2015

View Details

See also
Status	Clinical Trial	Phase
Completed	`NCT03607409` - Role of Inhibin A as Biomarker for Ovarian Response for IVF Treatment
Recruiting	`NCT02312076` - GnRHa for Luteal Phase Support in Long GnRHa Protocol Cycles	Phase 4
Terminated	`NCT02161861` - Improvement of IVF Fertilization Rates, by the Cyclic Tripeptide FEE - Prospective Randomized Study	N/A
Completed	`NCT03287479` - Comparison of a Semi-automated Closed Vitrification System (Gavi®) With a Manual Open Vitrification Sytem (Cryotop®)	N/A
Terminated	`NCT03522350` - Randomized Trial Comparing EmbryoScope With EmbryoScope+.	N/A
Completed	`NCT04496284` - Embryo Transfer Outcomes After Vitrification With Slush Nitrogen Compared to Liquid Nitrogen	N/A
Completed	`NCT03623659` - pArtiaL zonA pelluciDa Removal by assisteD hatchINg of Blastocysts	N/A
Completed	`NCT03895099` - New Ovarian Stimulation With Random Start, Use of Progestin Protocol for Oocyte Donors	Phase 3
Active, not recruiting	`NCT04142112` - Randomized, Standard-Controlled, Study to Evaluate the Ohana IVF Sperm Preparation Kit, SPeRtility IVF Next Generation	N/A
Completed	`NCT03152643` - Cumulative Live Birth Rates After Cleavage-stage Versus Blastocyst-stage Embryo Transfer	N/A
Recruiting	`NCT03683771` - Assessment of Endometrial Pattern and Sub-endometrial Vascularity in ICSI Outcome
Recruiting	`NCT03161119` - Comparing Two Different Embryo Transfer Catheters	N/A
Completed	`NCT04108039` - Micronized Progesterone vs Gonadotropin-releasing Hormone (GnRH) Antagonist in Freeze-all IVF Cycles.	N/A
Completed	`NCT03678571` - Oocyte Vitrification Aided With Latrunculin A	N/A
Completed	`NCT03677492` - Supplementing Intracytoplasmic Sperm Injection Handling Medium With Cytochalasin D ( ICSI-CD)	N/A
Completed	`NCT03678584` - Supplementing Intracytoplasmic Sperm Injection Handling Medium With Chaetoglobosin A ( ICSI-CA)	N/A
Completed	`NCT03678610` - Handling Medium for ICSI With Ionomycin and Latrunculin A	N/A
Completed	`NCT03678558` - Oocyte Vitrification Aided With Cytochalasin B	N/A
Completed	`NCT03678818` - Supplementing Intracytoplasmic Sperm Injection Handling Medium With Latrunculin A (ICSI-LA)	N/A
Completed	`NCT03678597` - Supplementing Intracytoplasmic Sperm Injection Handling Medium With Latrunculin B ( ICSI-LB)	N/A