PGS results at AVA-Peter

Materials and methods

November 2012 — April 2014

  • 97 PGS cases in 83 patients
  • 397 embryos on day 5/6 (1—16 embryos per patient, in average — 4.1 embryos/patient)
  • All embryos frozen via vitrification immediately after biopsy
  • Transfers of frozen-thawed embryos, euploid for 23 chromosome pairs took place in subsequent cycles (not in the egg collection cycles) aCGH 24Sure (BlueGnome, UK)

PGS results via aCGH  method

Number of planned PGS aCGH cycles


Number of cancelled PGS cycles due to having no blastocysts for biopsy


Number of performed PGS aCGH cycles


No embryo transfer took place, because all embryos abnormal

27 cycles (27.8%), out of which 19 cycles only 1-2 blastocysts available fro PGS



Quantity of transferred embryos

59 (43 “SET” (84.3%) + 8 DET (15.7%)

General group (HCG+/ET  CP/ET)

31/51 (60.8%)   

28/51 (54.9%)

October 24, 2013 — The first child born after PGS aCGH at AVA-Peter!

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“…Well the Millennium shift came, the year 2000, we all remember what we did then, right? I got cancer, Hodgkin's lymphoma... And when I stand here now 17 years later, you understand that it went well! Except for one important thing…"


“…When I left the clinic and walked down the Nevsky Prospect I knew I was pregnant — and the feeling was right! 9 month after her visit at the AVA Clinic Alexander was born!”

Ewa and Sten

After 3 IVF in Sweden, 3 miscarriages, Elisabet and Pär became parents of lovely Ester through egg donation in St. Petersburg

Having questions? Ask our doctors now!

A blog by Tone Bråten

A blog — to help you on your journey to become parents!

Our patients tell their stories

  • Willeke and Mario from Netherlands come to AVA-Peter for egg donation treatment… Enjoy this touching and sincere documentary by Jorien van Nes