Pregnancy and birth after intracytoplasmic sperm injection of in vitro matured germinal-vesicle stage oocytes: Case report

Z. P. Nagy, J. Cecile, J. Liu, A. Loccufier, P. Devroey, A. Van Steirteghem

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Objective: To report a normal pregnancy and the delivery of a healthy child after the combination of in vitro maturation of germinal-vesicle stage oocytes and intracytoplasmic sperm injection (ICSI) in a patient. Setting: Procedures were performed in a tertiary IVF center coupled with an institutional research environment. Main Outcome Measures: Maturation rate of immature oocytes after in vitro maturation and intactness, fertilization, and developmental rates of oocytes after microinjection. Results: Nine of 14 germinal-vesicle stage oocytes matured to the metaphase II stage after 30 hours of in vitro culture (64%). Seven of eight injected and intact oocytes fertilized normally (78%) and five of them cleaved with <20% fragmentation (71%). Four embryos were transferred and a singleton pregnancy was obtained that ended in the delivery of a healthy child. Conclusion: In vitro maturation of immature oocytes together with ICSI can result in normal fertilization, embryo development, pregnancy, and the delivery of healthy child.

Original languageEnglish
Pages (from-to)1047-1050
Number of pages4
JournalFertility and Sterility
Issue number5
Publication statusPublished - Jan 1 1996



  • Assisted fertilization
  • germinal-vesicle
  • in vitro maturation
  • intracytoplasmic sperm injection
  • male infertility
  • microinjection

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynaecology

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