InfertilityNCT01033474
Results Following the Vitrification of Human Oocytes Using 2 Methodologies
An observational study of Infertility, run by Northwest Center for Reproductive Sciences at 1 site in Peru.
Trial summary
The investigators are going to compare embryo developmental rates of human eggs following freezing in two different freezing methods. The investigators are going to compare the pregnancy rates following transfer to patients as well. Read more about this study
- Who is it for?
- Ages 25 to 55 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Infertility
- How many people
- 40 participants
- Where
- 1 sitePeru
- Study dates
- Dec 2009to Jul 2011
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 25 to 55 years
- Women only
- Healthy volunteers accepted
- Adult
Study population: We will use infertile patients that need donor oocytes
Who may be able to join
- Must be healthy and pass testing as per clinic standards
Who cannot join
- Are over the age or cannot carry a pregnancy safely
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Embryonic Developmental Rates and Pregnancies Following the Vitrification of Human Oocytes Using Two Methodologies.
The investigators are going to compare embryo developmental rates of human eggs following freezing in two different freezing methods. The investigators are going to compare the pregnancy rates following transfer to patients as well.
Null Hypothesis: The type of vitrification methodology used will not have an impact on the following:
- Survival rates
- Embryonic developmental rates
- Pregnancy and implantation rates.
Read the detailed description
Randomization of Oocytes: Oocytes will be denuded approximately 1-2 hours post retrieval and graded for maturity. Only the Metaphase II oocyte will be vitrified. Half of the oocytes within each donor will be randomized to the following treatments.
- Frozen using an open system using a metal grid to hold the oocyte. Three to five oocytes will be frozen on the metal grid using a minute amount (< 2-3 µls) of cryoprotectant. A top is put over the metal grid to protect the oocytes. This system has proven to be successful in limited cases in Peru. This is an open system of vitrification where the oocytes are directly plunged into liquid nitrogen. This will serve as the control.
- Frozen in closed straws using a methodology developed by Jim Stachecki. Three to five oocytes will be frozen in ¼ cc straws. This is very similar to the method used to successfully vitrify blastocysts. This will be the experimental treatment.
Null Hypothesis: The type of vitrification methodology used will not have an impact on the following:
- Survival rates
- Embryonic developmental rates
- Pregnancy and implantation rates. Measured Outcomes The effect of vitrification technique will be measured using the appropriate statistical analysis on the following parameters.
- Survival rates following thawing.
- Effect of vitrification technique on how oocytes react to ICSI. The parameters have been previously defined at NCRS.
- Normal fertilization rates, abnormal fertilization rates and rates of degeneration following ICSI.
- Embryonic development rates. Embryos will be cultured until Day 5/6 and rate as well as quality of blastocyst will be noted.
- Pregnancy and implantation rates following replacement in endometrial prepared recipients.
- Conditions
- Infertility
- Keywords
- Infertile Patients
- Medical subject headings
- Infertility
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| donor eggs | Not described | |
| infertile patients | Not described |
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Dec 2009 (estimated)
- Study startDec 2009
- Primary completionSep 2010 (estimated)
- Study completionJul 2011
Why it stopped: NW Center for Reproductive Sciences was sold and is no longer open
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for InfertilityStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case only
- Time perspective
- Prospective
- Enrolment
- 40 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Northwest Center for Reproductive Sciences
- Sponsor type
- University, hospital or other
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01033474
- Sponsor's protocol ID
- 555-2009
- Status last verified
- Jul 2011
- First submitted
- 14 Dec 2009
- Last updated
- 22 Jul 2011
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 22 Jul 2011. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Embryonic Developmental Rates and Pregnancies Following the Vitrification of Human Oocytes Using Two Methodologies.
- ClinicalTrials.gov ID
- NCT01033474
- Acronym / sponsor ID
- 555-2009
- Conditions
- Infertility
- Keywords
- Infertile Patients
- Study type
- Observational
- Recruitment status
- WithdrawnReason stopped: NW Center for Reproductive Sciences was sold and is no longer open
- Enrolment
- 40 participants (estimated)
- Lead sponsor
- Northwest Center for Reproductive SciencesUniversity, hospital or other
- Study start
- Dec 2009
- Primary completion
- Sep 2010 (estimated)
- Study completion
- Jul 2011 (actual)
- First posted
- 16 Dec 2009 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The investigators are going to compare embryo developmental rates of human eggs following freezing in two different freezing methods. The investigators are going to compare the pregnancy rates following transfer to patients as well.
Null Hypothesis: The type of vitrification methodology used will not have an impact on the following:
- Survival rates
- Embryonic developmental rates
- Pregnancy and implantation rates.
Detailed description
Randomization of Oocytes: Oocytes will be denuded approximately 1-2 hours post retrieval and graded for maturity. Only the Metaphase II oocyte will be vitrified. Half of the oocytes within each donor will be randomized to the following treatments.
- Frozen using an open system using a metal grid to hold the oocyte. Three to five oocytes will be frozen on the metal grid using a minute amount (< 2-3 µls) of cryoprotectant. A top is put over the metal grid to protect the oocytes. This system has proven to be successful in limited cases in Peru. This is an open system of vitrification where the oocytes are directly plunged into liquid nitrogen. This will serve as the control.
- Frozen in closed straws using a methodology developed by Jim Stachecki. Three to five oocytes will be frozen in ¼ cc straws. This is very similar to the method used to successfully vitrify blastocysts. This will be the experimental treatment.
Null Hypothesis: The type of vitrification methodology used will not have an impact on the following:
- Survival rates
- Embryonic developmental rates
- Pregnancy and implantation rates. Measured Outcomes The effect of vitrification technique will be measured using the appropriate statistical analysis on the following parameters.
- Survival rates following thawing.
- Effect of vitrification technique on how oocytes react to ICSI. The parameters have been previously defined at NCRS.
- Normal fertilization rates, abnormal fertilization rates and rates of degeneration following ICSI.
- Embryonic development rates. Embryos will be cultured until Day 5/6 and rate as well as quality of blastocyst will be noted.
- Pregnancy and implantation rates following replacement in endometrial prepared recipients.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| donor eggs | – | – |
| infertile patients | – | – |
Who may qualify
- Ages
- 25 to 55 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- We will use infertile patients that need donor oocytes
Key inclusion criteria (1 listed)
- Must be healthy and pass testing as per clinic standards
Key exclusion criteria (1 listed)
- Are over the age or cannot carry a pregnancy safely
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
1 secondary outcome
Pregnancy rate
Time frame: 12 weeks
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 22 Jul 2011.
Related trials for Infertility
RecruitingObservational study
International Pilot Study for Dual Non-invasive Assesment of Embryo Development
Infertility
Active, not recruitingObservational study
Retrieval of Sperm From Men With Azoospermia Using Ultrasound-guided Rete Testis Aspiration
Azoospermia, Nonobstructive, Infertility, Male
Not yet recruiting
Spinery Basivertebral Nerve Ablation for Vertebrogenic Chronic Low Back Pain
Low Back Pain, Chronic Low Back Pain (CLBP)
RecruitingObservational study
Impact of Infertility on the Sexual Sphere in Couples Undergoing Assisted Reproduction
Sexual Health Quality of Life, Infertile Patients
RecruitingObservational study
Pilot Study of Discarded Blastocysts
Infertility (IVF Patients)
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Infertility, run by Northwest Center for Reproductive Sciences at 1 site in Peru.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: withdrawn, as of the sponsor's last update on 22 Jul 2011. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Peru. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 Jul 2011.