Outcomes of transferring embryos identified as abnormal

Transfer of Aneuploid or Mosaic Embryos Following Preimplantation Genetic Testing

NA · Stanford University · NCT04109846

This study is testing whether transferring embryos that are found to have genetic abnormalities can lead to successful pregnancies and healthy children for patients who have no other viable embryo options.

Quick facts

PhaseNA
Study typeInterventional
Enrollment300 (estimated)
Ages18 Years to 55 Years
SexFemale
SponsorStanford University (other)
Locations1 site (Sunnyvale, California)
Trial IDNCT04109846 on ClinicalTrials.gov

What this trial studies

This study aims to assess the outcomes of pregnancies resulting from the transfer of embryos that have been identified as aneuploid or mosaic through preimplantation genetic testing. It will evaluate the frequency of live births from these embryos and investigate any associated risks for complications during pregnancy and potential health or developmental issues in the children during their first five years. Participants will provide medical records and pediatric data, and the study will meticulously document genetic testing results and pregnancy outcomes. The research is conducted at Stanford University, focusing on patients with no other viable embryo options.

Who should consider this trial

Good fit: Ideal candidates are individuals with available aneuploid or mosaic embryos and no other acceptable embryos, who are willing to travel to Stanford for treatment.

Not a fit: Patients using international donor eggs or sperm not tested according to FDA guidelines, or those living outside the United States, may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide critical insights into the safety and viability of transferring embryos deemed abnormal, potentially improving reproductive outcomes for patients.

How similar studies have performed: While there have been studies on embryo transfer outcomes, this specific focus on aneuploid and mosaic embryos is relatively novel and not extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Available aneuploid or mosaic embryos
* No other acceptable embryos available
* Willing to travel to Stanford for treatment
* English language fluency

Exclusion Criteria:

* Use of international donor eggs or sperm not tested according to FDA guidelines.
* Living outside the United States
* Embryos with Triploidy are not eligible for transfer in this protocol

Where this trial is running

Sunnyvale, California

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Aneuploidy, Mosaicism, Pregnancy Outcome, Preimplantation Genetic Testing for Aneuploidy, Preimplantation Genetic Screening, embryo transfer, mosaic, aneuploid

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.