Co-culture and Advanced Maternal Age in PGS Program (CC-PGS)

This study has been completed.
Information provided by:
Instituto Valenciano de Infertilidad, IVI VALENCIA Identifier:
First received: March 10, 2011
Last updated: March 14, 2011
Last verified: March 2011

Fertilization and embryo development in vivo occurs in appropriate conditions in the mammalian reproductive tract. However in assisted reproductive technology (ART) embryos and oocytes are exposed to certain factors such as temperature, O2 pressure and pH fluctuations that may affect embryo development and viability in vitro. In Preimplantation Genetic Screening program (PGS) the investigators need to culture the embryos until day 5 so the requirement of culture techniques must be optimal to produce acceptable blastocyst rates. As it has been shown before, embryo culture conditions have the potential to impact biopsied embryos and hence PGS success rates.

Nowadays the coculture system with endometrial cells could be an alternative option to improve the blastocyst rates since some publications have indicated that endometrial cells may provide trace elements and growth factors that are not present in defined culture media and reproduce physiologic conditions. Although the role of coculture in vitro fertilization (IVF) has been controversial, a recent meta-analysis has established the potential benefits of coculture system.

The aim of this study was to compare embryologic and clinical outcomes in terms of blastocyst, implantation and pregnancy rates to evaluate endometrial epithelial cell (EEC) coculture versus sequential culture system in advanced maternal age ( ≥39 years) in the investigators PGS program.

Age Factors

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective
Official Title: Coculture Versus Sequential Culture System in Advanced Maternal Age: a Prospective and Quasi-randomized Study

Further study details as provided by Instituto Valenciano de Infertilidad, IVI VALENCIA:

Primary Outcome Measures:
  • Implantation Rate [ Designated as safety issue: Yes ]

Study Start Date: February 2009
Study Completion Date: December 2010
Primary Completion Date: February 2010 (Final data collection date for primary outcome measure)
Control Group
sequential culture system
Co-culture system


Ages Eligible for Study:   40 Years to 47 Years
Genders Eligible for Study:   Female
Sampling Method:   Probability Sample
Study Population
Women over 39 years old undergoing a PGS cycle

Inclusion Criteria:

  • Advanced maternal age (>39) undergoing PGS cycle

Exclusion Criteria:

  • Other PGS indication
  • Altered karyotype
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Please refer to this study by its identifier: NCT01314846

IVI Madrid
Madrid, Spain, 28023
Sponsors and Collaborators
Instituto Valenciano de Infertilidad, IVI VALENCIA
  More Information

No publications provided

Responsible Party: Mª Carmen nogales, PhD Identifier: NCT01314846     History of Changes
Other Study ID Numbers: MAD-MN-10-2011-03 
Study First Received: March 10, 2011
Last Updated: March 14, 2011
Health Authority: Spain: Comité Ético de Investigación Clínica processed this record on February 11, 2016