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Rita Vassena, Eugin's scientific director and author of the paper. Photo: Eugin.

Eugin promotes a pioneering study to understand the molecular changes in eggs produced by the passage of time

To know the molecular composition of the egg in order to enhance our knowledge of female fertility is the aim of the work promoted by Eugin Clinic. The study was conducted in the basic research laboratory that Eugin has in the Barcelona Science Park, where the assisted reproduction centre works to deepen its knowledge of fertility.


This study was presented at the annual meeting of the European Society of Assisted Reproduction and Embryology (ESHRE) held in Lisbon from 14 to 17 June. For the first time ever, as many as 500,000 genes in a woman’s oocytes have been studied.

“This is a really cutting-edge study from a research point of view,” explains Dr. Rita Vassena, Eugin’s scientific director and author of the paper, entitled Age and Ovarian Reserve Affect The Non-Coding Transcriptome Of Human Oocytes.

“Never before had these types of molecules been observed in a woman’s oocytes. We are observing the changes undergone by the molecular composition of the eggs over the years. All this will enable us in the future to predict what the state of health of a woman’s ovaries is, and therefore better understand her fertility”, she adds.

The study was conducted in the Laboratory of Molecular and Cellular Biology of Reproduction that Eugin has in the  Barcelona Science Park. This cente raims to advance our knowledge of human reproduction infertility, developing new technologies to improve current techniques increase the rate success of different treatments for the benefit of our patients.