title: Full-sibling embryos created by anonymous gamete donation in unrelated recipients.
abstract: OBJECTIVE
  To report the rare occurrence of full-sibling embryos in unrelated women using independently chosen donor sperm and donor oocytes in two different cycles unintentionally created at our IVF program, and to discuss the concept of disclosure to the patients.
  
  
  METHODS
  Case report.
  
  
  METHODS
  Academic IVF program.
  
  
  METHODS
  Two women independently undergoing donor recipient cycles with anonymous donor oocytes and donor sperm.
  
  
  METHODS
  Both women received oocytes from the same donor several months apart and then by coincidence selected the same anonymous sperm donor to create anonymous full-sibling embryos.
  
  
  METHODS
  Clinical pregnancy after donor-recipient IVF cycle.
  
  
  RESULTS
  Both women conceived using the same donor sperm and donor oocytes in independent cycles, resulting in simultaneous pregnancy of full siblings.
  
  
  CONCLUSIONS
  As providers with the knowledge that anonymous full sibling embryos have been created, we may have an obligation to disclose this information to the patients.
authors.affiliation: Division of Reproductive Endocrinology and Infertility, Department of Obstetrics & Gynecology and Women's Health, Albert Einstein College of Medicine, Bronx, NY 10530, USA.
authors.forename: Cary L
authors.initials: CL
authors.lastname: Dicken
authors.forename: Athena
authors.initials: A
authors.lastname: Zapantis
authors.forename: Edward
authors.initials: E
authors.lastname: Illions
authors.forename: Staci
authors.initials: S
authors.lastname: Pollack
authors.forename: Harry J
authors.initials: HJ
authors.lastname: Lieman
authors.forename: Kris
authors.initials: K
authors.lastname: Bevilacqua
authors.forename: Sangita K
authors.initials: SK
authors.lastname: Jindal
mesh_terms: D000328:Adult; D005260:Female; D005307:Fertilization in Vitro / Q000941:ethics / Q000523:psychology*; D005854:Germ Cells; D006801:Humans; D008875:Middle Aged; D018587:Oocyte Donation / Q000941:ethics / Q000523:psychology*; D011247:Pregnancy; D011256:Pregnancy Outcome; D035781:Siblings; D013074:Sperm Banks / Q000941:ethics; D014342:Truth Disclosure / Q000941:ethics