title: Comparison of pregnancy outcome following frozen embryo transfer (ET) in a gestational carrier program according to source of the oocytes.
abstract: OBJECTIVE
  To determine any differences in pregnancy rates if frozen-thawed embryos are transferred to a gestational carrier if the source of oocytes came from infertile women trying to conceive vs a paid egg donor.
  
  
  METHODS
  Gestational carriers were used because of uterine problems or health issues. If there was adequate ovarian egg reserve, controlled ovarian hyperstimulation followed by oocyte retrieval was performed on the infertile woman. Otherwise an egg donor was used.
  
  
  RESULTS
  No differences in clinical and ongoing delivered pregnancy rates were found but a trend for higher implantation rates in the paid donors was evident.
  
  
  CONCLUSIONS
  The trend for higher implantation rates when a paid donor was the source of oocytes may be age-related (35.9 for infertile women vs 29.5 for paid donors). The pregnancy results with frozen embryos were sufficient to allow women to proceed with oocyte retrieval if time is of the essence even if a gestational carrier has not as yet been found.
authors.affiliation: The University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School at Camden, NJ, USA. laurie@ccivf.com
authors.forename: J H
authors.initials: JH
authors.lastname: Check
authors.forename: B
authors.initials: B
authors.lastname: Katsoff
authors.forename: D
authors.initials: D
authors.lastname: Brasile
authors.forename: C
authors.initials: C
authors.lastname: Wilson
authors.forename: D
authors.initials: D
authors.lastname: Summers-Chase
mesh_terms: D000328:Adult; D015331:Cohort Studies; D015925:Cryopreservation; D004624:Embryo Transfer / Q000379:methods* / Q000592:standards; D005260:Female; D006801:Humans; D007247:Infertility, Female / Q000503:physiopathology; D008297:Male; D009865:Oocytes / Q000502:physiology*; D011247:Pregnancy; D012189:Retrospective Studies; D013533:Gestational Carriers