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The Effects of Physiologic Oxygen Tension on Clinical In Vitro Fertilization Outcomes

A Prospective, Randomized, Double-Blind, Controlled Clinical Trial of the Effects of Oxygen Tension on Clinical In Vitro Fertilization Outcomes

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01010386
Acronym
PhOx
Enrollment
851
Registered
2009-11-10
Start date
2010-03-31
Completion date
2014-02-28
Last updated
2017-05-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infertility, Pregnancy

Keywords

Pregnancy, Infertility, Physiologic Oxygen Tension, Atmospheric Oxygen Tension

Brief summary

Primary Aim * Evaluate whether human embryo exposure to physiologic levels of oxygen during culture improves the percentage of women who deliver a baby following in vitro fertilization and embryo transfer. Hypothesis to be tested: Physiologic oxygen tension during embryo culture, which approximates the oxygen tension in the fallopian tube and uterus, improves live birth rate in clinical In Vitro Fertilization Embryo Transfer (IVF-ET). Secondary Aims Evaluate whether human embryo exposure to physiologic levels of oxygen during culture during in vitro fertilization and embryo transfer * improves embryo cleavage * improves clinical pregnancy rate * reduces multiple pregnancy rate * reduces miscarriage rate Hypothesis to be tested: Physiologic oxygen tension during embryo culture, which approximates the oxygen tension in the fallopian tube and uterus, improves embryo cleavage and clinical pregnancy rates and reduces miscarriage rates in clinical IVF-ET.

Detailed description

Study Design This will be a multi-center, prospective, double-blind clinical trial of physiologic (5%) oxygen tension in culture media vs. standard of care, atmospheric (SOC, 20%) oxygen tension with 840 eligible couples recruited to participate. The randomization scheme will be coordinated through the central data coordinating center (DCC-Yale) and the randomization will be stratified by age group of the woman (18-34, 35-37, 38-40 and 40-42) and each participating site. Treatment Couples will be randomized to either have their gametes and embryos placed in a physiologic (5%) oxygen atmosphere or in the currently widely used atmospheric (20%) oxygen atmosphere.

Interventions

PROCEDUREAtmospheric oxygen tension

Couples will have their gametes and embryos placed in the currently widely used atmospheric (20%) oxygen atmosphere

PROCEDUREPhysiologic oxygen tension

Couples will have their gametes and embryos placed in a physiologic (5%) oxygen atmosphere

Sponsors

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
CollaboratorNIH
University of Pennsylvania
CollaboratorOTHER
University of California, San Francisco
CollaboratorOTHER
University of Connecticut
CollaboratorOTHER
Yale University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 42 Years
Healthy volunteers
No

Inclusion criteria

The critical inclusion criteria will be the diagnosis of infertility and the need for in vitro fertilization as determined by the treating clinician. (We do not plan to alter the standard of care for the indication for IVF at any of the sites.) * Couple's age must be between 18 and 42 years old * Patient and partner are scheduled to undergo in vitro fertilization for treatment of infertility * Couple able to participate in a research project and A) Able to understand study requirements B) Willing to sign informed consent C) Able to return for required follow-up D) Have access to telephone

Exclusion criteria

Critical

Design outcomes

Primary

MeasureTime frame
The primary outcome is live birth rate.2 years

Secondary

MeasureTime frame
The impact of treatment on embryo cleavage2 years
The impact of treatment on clinical pregnancy2 years
The impact of treatment on multiple pregnancy2 years
The impact of treatment on miscarriage2 years

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026