Risk for Congenital Anomalies in Children Conceived With Medically Assisted Fertility Treatment : A Population-Based Cohort Study.

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dc.contributor.authorVenetis, C.
dc.contributor.authorChoi, S.K.Y.
dc.contributor.authorJorm, L.
dc.contributor.authorZhang, X.
dc.contributor.authorLedger, W.
dc.contributor.authorLui, K.
dc.contributor.authorHavard, A.
dc.contributor.authorChapman, M.
dc.contributor.authorNorman, R.J.
dc.contributor.authorChambers, G.M.
dc.date.issued2023
dc.description.abstractBackground: More than 2 million children are conceived annually using assisted reproductive technologies (ARTs), with a similar number conceived using ovulation induction and intrauterine insemination (OI/IUI). Previous studies suggest that ARTconceived children are at increased risk for congenital anomalies (CAs). However, the role of underlying infertility in this risk remains unclear, and ART clinical and laboratory practices have changed drastically over time, particularly there has been an increase in intracytoplasmic sperm injection (ICSI) and cryopreservation. Objective: To investigate the role of underlying infertility and fertility treatment on CA risks in the first 2 years of life. Design: Propensity score–weighted population-based cohort study. Setting: New South Wales, Australia. Participants: 851 984 infants (828 099 singletons and 23 885 plural children) delivered between 2009 and 2017. Measurements: Adjusted risk difference (aRD) in CAs of infants conceived through fertility treatment compared with 2 naturally conceived (NC) control groups—those with and without a parental history of infertility (NC-infertile and NC-fertile). Results: The overall incidence of CAs was 459 per 10 000 singleton births and 757 per 10 000 plural births. Compared with NC-fertile singleton control infants (n ¼ 747 018), ARTconceived singleton infants (n ¼ 31 256) had an elevated risk for major genitourinary abnormalities (aRD, 19.0 cases per 10 000 births [95% CI, 2.3 to 35.6]); the risk remained unchanged (aRD, 22 cases per 10 000 births [CI, 4.6 to 39.4]) when compared with NC-infertile singleton control infants (n ¼ 36 251) (that is, after accounting for parental infertility), indicating that ART remained an independent risk. After accounting for parental infertility, ICSI in couples without male infertility was associated with an increased risk for major genitourinary abnormalities (aRD, 47.8 cases per 10 000 singleton births [CI, 12.6 to 83.1]). There was some suggestion of increased risk for CAs after fresh embryo transfer, although estimates were imprecise and inconsistent. There were no increased risks for CAs among OI/IUI-conceived infants (n ¼ 13 574). Limitations: This study measured the risk for CAs only in those children who were born at or after 20 weeks' gestation. Observational study design precludes causal inference. Many estimates were imprecise. Conclusion: Patients should be counseled on the small increased risk for genitourinary abnormalities after ART, particularly after ICSI, which should be avoided in couples without problems of male infertility.
dc.description.statementofresponsibilityChristos Venetis, Stephanie K.Y. Choi, Louisa Jorm, Xian Zhang, William Ledger, Kei Lui, Alys Havard, Michael Chapman, Robert J. Norman, and Georgina M. Chambers
dc.identifier.citationAnnals of Internal Medicine, 2023; 176(10):1308-1320
dc.identifier.doi10.7326/m23-0872
dc.identifier.issn0003-4819
dc.identifier.issn0003-4819
dc.identifier.orcidNorman, R.J. [0000-0002-3118-3896]
dc.identifier.urihttps://hdl.handle.net/2440/140295
dc.language.isoen
dc.publisherAmerican College of Physicians
dc.relation.grantNHMRC
dc.rights© 2023 American College of Physicians
dc.source.urihttps://doi.org/10.7326/m23-0872
dc.subjectmedically assisted fertility treatment; congenital anomalies
dc.subject.meshSemen
dc.subject.meshHumans
dc.subject.meshInfertility, Male
dc.subject.meshUrogenital Abnormalities
dc.subject.meshPregnancy Outcome
dc.subject.meshCohort Studies
dc.subject.meshPregnancy
dc.subject.meshChild, Preschool
dc.subject.meshInfant
dc.subject.meshInfant, Newborn
dc.subject.meshAustralia
dc.subject.meshFemale
dc.subject.meshMale
dc.titleRisk for Congenital Anomalies in Children Conceived With Medically Assisted Fertility Treatment : A Population-Based Cohort Study.
dc.typeJournal article
pubs.publication-statusPublished

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