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Similarly increased congenital anomaly rates after intrauterine insemination and IVF technologies: a retrospective cohort study

Abstract : BACKGROUND: While intrauterine insemination (IUI), a simple, inexpensive and non-invasive technique, is the most used assisted reproduction technology (ART) worldwide, the risk of major birth defects following IUI is paradoxically not well documented. METHODS: Retrospective cohort study performed in Burgundy, France, over a 9-year period which consisted of the cross analysis of two prospective databases, the Burgundy perinatal network database and the database of the assisted conception units in Burgundy. A total of 1348 ART singletons [in vitro fertilization technologies (IVFT): n= 903; IUI: n= 445] matched with 4044 infants conceived naturally, 552 ART twins (IVFT: n= 362; IUI: n= 190) matched with 1656 twins who were conceived naturally. The major birth defects were categorized according to the European Surveillance of Congenital Anomalies classification EUROCAT. RESULTS: Compared with naturally conceived singletons, singletons born after IUI and IVFT had a higher prevalence of major congenital malformations, with adjusted odd ratios (AOR) of 2.0 [95% confidence interval (CI) 1.0-3.8] and 2.0 (CI 1.3-3.1); 3.6 and 4.2% of infants born, respectively. All twins and unlike-sex twins born after IVFT but not IUI, have an increased prevalence of major birth defects compared with naturally conceived twins; AOR of 3.0 (CI 1.6-5.6) and 3.7 (CI 1.1-16.9), respectively. When comparing IUI with IVFT, no differences were observed for singletons (AOR 1.0; CI 0.4-2.2), all twins (AOR 0.4; CI 0.1-1.2) and unlike-sex twins (AOR 0.3; CI 0.1-4.5). CONCLUSIONS: The risk of major birth defects in singletons conceived through IUI was increased over naturally conceived singletons. This risk was no different from that observed after IVFT.
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https://hal.univ-reunion.fr/hal-01194215
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Submitted on : Saturday, September 5, 2015 - 9:48:12 AM
Last modification on : Friday, February 25, 2022 - 3:19:38 AM

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P. Sagot, S. Bechoua, Cyril Ferdynus, A. Facy, X. Flamm, et al.. Similarly increased congenital anomaly rates after intrauterine insemination and IVF technologies: a retrospective cohort study. Human reproduction (Oxford, England), 2012, 27 (3), pp.902--909. ⟨10.1093/humrep/der443⟩. ⟨hal-01194215⟩

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