Does confined placental mosaicism account for adverse perinatal outcomes in IVF pregnancies?

B. C. Jacod*, K. D. Lichtenbelt, G. H. Schuring-Blom, J. S. E. Laven, D. van Opstal, M. J. C. Eijkemans, N. S. Macklon, IVF-CPM Study Grp

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)

Abstract

BACKGROUND: IVF singletons have poorer perinatal outcomes than singletons from spontaneous conceptions. This may be due to the influence of ovarian stimulation on the chromosomal constitution of the embryos which could be translated into localized chromosomal anomalies in the placenta. The aim of this study was to compare the incidence of confined placental mosaicism (CPM) in IVF/ICSI pregnancies and spontaneous conceptions. METHODS: We conducted a multi-centre retrospective analysis of karyotype results obtained by chorionic villus sampling (CVS), performed due to advanced maternal age (>= 36 years at 18 weeks of gestation), in the Netherlands between 1995 and 2005. RESULTS: From a total of 322 246 pregnancies, 20 885 CVS results were analysed: 235 in the IVF/ICSI group and 20 650 in the control group. The mean age of women in both groups was 38.4 years (mean difference -0.08, 95% CI -0.35 to 0.18). Data relating to the fetal karyotype were missing in 143 cases in the control group. When taking into account missing data, the incidence of CPM was lower in the IVF-ICSI group than in the control group, 1.3% versus 2.2% (odds ratio 0.59, 95% CI 0.19-1.85), whereas the incidence of fetal chromosomal anomalies was increased 4.3% versus 2.4% (odds ratio 1.81, 95% CI 0.95-3.42). Neither differences were statistically significant. CONCLUSIONS: The incidence of CPM is not increased in IVF/ICSI pregnancies compared with spontaneous conceptions. CPM probably does not account for the adverse perinatal outcomes following IVF/ICSI.

Original languageEnglish
Pages (from-to)1107-1112
Number of pages6
JournalHuman Reproduction
Volume23
Issue number5
DOIs
Publication statusPublished - May-2008

Keywords

  • iVF
  • CPM
  • perinatal outcomes
  • CVS
  • preimplantation genetic screening
  • IN-VITRO FERTILIZATION
  • INTRACYTOPLASMIC SPERM INJECTION
  • PREIMPLANTATION EMBRYOS
  • CVS MOSAICISM
  • CHROMOSOME-ABNORMALITIES
  • ASSISTED REPRODUCTION
  • OVARIAN STIMULATION
  • PREDICTIVE-VALUE
  • FETAL-GROWTH
  • ANEUPLOIDY

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