Prevalence of pathogenic copy number variants among children conceived by donor oocyte.

Autores de IIS La Fe

• Sandra Monfort Membrado

  Autor

• Carmen Orellana Alonso

  Autor

• Juan Silvestre Oltra Soler

  Autor

• Mónica Pilar Roselló Piera

  Autor

• Alfonso José Caro Llopis

  Autor

• 

  Francisco Martínez Castellano

  Autor

Grupos

• Investigación Traslacional en Genética

  

  Leader

  Francisco Martínez Castellano

Abstract

Development of assisted reproductive technologies to address infertility has favored the birth of many children in the last years. The majority of children born with these treatments are healthy, but some concerns remain on the safety of these medical procedures. We have retrospectively analyzed both the fertilization method and the microarray results in all those children born between 2010 and 2019 with multiple congenital anomalies, developmental delay and/or autistic spectrum disorder (n=486) referred for array study in our center. This analysis showed a significant excess of pathogenic copy number variants among those patients conceived after in vitro fertilization with donor oocyte with respect to those patients conceived by natural fertilization (p=0.0001). On the other hand, no significant excess of pathogenic copy number variants was observed among patients born by autologous oocyte in vitro fertilization. Further studies are necessary to confirm these results and in order to identify the factors that may contribute to an increased risk of genomic rearrangements, as well as consider the screening for genomic alterations after oocyte donation in prenatal diagnosis.