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Incidence and risk factors of monozygotic twinning following ART: analysis of 154 671 live births resulting from single embryo transfer

14 Jun 2025

Abstract excerpt

STUDY QUESTION: What is the incidence of and risk factors for monozygotic twinning (MZT) following single embryo transfer (SET) in ART cycles in Australia and New Zealand? SUMMARY ANSWER: MZT occurred in 1.5% of live births following SET, with blastocyst transfer and fresh embryo transfer identified as key risk factors, while vitrified-thaw transfers were associated with a lower MZT risk. WHAT IS KNOWN ALREADY:...

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PMID: 40587819
DOI: 10.1093/humrep/deaf121

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