Preimplantation genetic testing for aneuploidies does not increase success rates in fresh oocyte donation cycles: a paired cohort study

J Assist Reprod Genet. 2021 Nov;38(11):2909-2914. doi: 10.1007/s10815-021-02339-2. Epub 2021 Oct 5.

Abstract

Purpose: To determine whether in vitro fertilization cycles using fresh oocyte donations benefit from preimplantation genetic testing for aneuploidies.

Methods: A paired cohort study compared 44 fresh oocyte donation cycles with or without preimplantation genetic testing for aneuploidy (PGT-A). The sibling oocyte study analyzed fertilized oocytes, blastocyst development, and euploidy rate. Only frozen embryo transfers were performed. Pregnancy, implantation, biochemical pregnancy, miscarriage, stillbirth, live birth, and twin pregnancy rates were analyzed between groups.

Results: Fresh oocyte donation cycles between PGT-A and non-PGT-A groups were similar in all laboratory and clinical outcomes. A euploidy rate of 74.2% was observed in the PGT-A group. Although a slight trend was observed for implantation rate in the PGT-A group, it was not statistically significant. No difference was observed for live birth between groups.

Conclusion: PGT-A associated with fresh oocyte donation cycles does not improve clinical outcomes and can be seen as over-treatment for patients.

Keywords: Fresh oocyte donation; Oocyte donation; PGT-A; Preimplantation genetic testing.

MeSH terms

  • Abortion, Spontaneous / epidemiology*
  • Adult
  • Aneuploidy*
  • Birth Rate
  • Brazil / epidemiology
  • Embryo Implantation
  • Female
  • Fertilization in Vitro / methods
  • Genetic Testing / methods*
  • Humans
  • Live Birth / epidemiology*
  • Male
  • Oocyte Donation / methods*
  • Oocytes / growth & development*
  • Pregnancy
  • Pregnancy Rate
  • Preimplantation Diagnosis / methods*
  • Retrospective Studies
  • Young Adult