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The Impact of the Biologist Performing the Embryo Transfer on the Cycle Outcome

Different Actors for the Same Play: the Impact of the Biologist Performing the Embryo Transfer on the Cycle Outcome

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04827771
Enrollment
30000
Registered
2021-04-01
Start date
2000-01-01
Completion date
2019-12-31
Last updated
2021-04-01

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

Conditions

Infertility

Brief summary

This is a retrospective single center analysis which includes all the fresh, IOC (insemination of in vitro matured oocytes) and frozen embryo transfer (ET) performed between January 2000 and December 2019 at Humanitas Fertility Center after IVF-ICSI (In Vitro Fertilization - Intracytoplasmic Sperm Injection) cycles. The primary objective is to determine the impact of the biologist performing the embryo transfer on the pregnancy probability, in terms of ongoing pregnancy rate (OPR), defined as the number of viable pregnancies that had completed at least 12 weeks of gestation on the total number of ET performed. Secondary end point is to evaluate whether the biologists improve their performances as their experience increases, allowing the drawing of an ET learning curve in term of pregnancies for the different biologists. The biologist's experience was assessed in terms of number of previous interventions performed prior to the day of ET. A total of 28 operators were eligible to participate in the study. Any biologists who performed less than 100 ETs was excluded from the analysis.

Interventions

None listed

Sponsors

Istituto Clinico Humanitas
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 43 Years

Exclusion criteria

Any biologist who performed less than 100 embryo transfers was excluded from the analysis.

Design outcomes

Primary

MeasureTime frameDescription
Ongoing pregnancy rate20 yearsThe number of viable pregnancies that had completed at least 12 weeks of gestation per total ETs

Outcome results

None listed

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