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Case Reports
. 2001;28(2):69-70.

Pregnancy following transfer of cryopreserved-thawed embryos that had been a result of fertilization of all in vitro matured metaphase or germinal stage oocytes. case report

M L Check  1 , D Brittingham, J H Check, J K Choe
Affiliations
  • PMID: 11491375
Case Reports

Pregnancy following transfer of cryopreserved-thawed embryos that had been a result of fertilization of all in vitro matured metaphase or germinal stage oocytes. case report

M L Check et al. Clin Exp Obstet Gynecol. 2001.

Abstract

Purpose: To see if pregnancies can be achieved after performing intracytoplasmic sperm injection (ICSI) of in vitro matured metaphase I or germinal vesicle stage oocytes and then cryopreserving them at the 2 pronuclear stage.

Methods: Transfer of frozen/thawed hatched day 3 embryos to two women. All embryos were a result of in vitro maturation of immature oocytes followed by ICSI.

Results: Both women conceived. One has delivered and one has successfully completed the first trimester.

Conclusion: These two cases represent only the second and third reported cases of pregnancies following frozen embryo transfer where the embryos resulted from fertilizing immature oocytes by ICSI.

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