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Table 2 Characteristics of aneuploid embryos transferred that led to implantation

From: Accuracy of preimplantation genetic screening (PGS) is compromised by degree of mosaicism of human embryos

Patient n Embryos transferred Embryos transferred Outcome
1 1 43, XY, -13, -15, -18 Normal birth, 46, XY
2 1 45, XY, -21 Normal birth, 46, XY
3 2a 45, XY, -21
46, XX
Normal birth, 46, XY
4 2b Partial 47, XX,17p11.2-pter
45, XY, -22
Normal ongoing 46, XX
5 2c 47, XY, +22
Partial 45, XY,-1plar-p36, 12
Normal ongoing 46, XY
6 1d 45, XY, -21 Chemical pregnancy
  1. aThis patient, who had undergone PGS for sex selection (desired sex male), had a 45, XY, -21 and a normal 46, XX female transferred. Since she delivered a healthy male, the pregnancy had to be the result of the 45, XY, -21 embryo
  2. bTwo embryos were transferred; normal 46, XX per CVS. Pregnancy, therefore, had to arise from partial trisomic embryo transferred. Currently 20 weeks
  3. cTwo embryos transferred; normal 46, XY per amniocentesis. Embryo leading to pregnancy unknown; Currently 19 weeks
  4. dChemical pregnancy indicates implantation but not considered a clinical pregnancy; Ploidy unknown