{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Wong KM"],"funding":["The Netherlands Organisation for Health Research and Development","ZonMw"],"pagination":["998-1006"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC7970725"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["36(4)"],"pubmed_abstract":["<h4>Study question</h4>Is IVF with frozen-thawed blastocyst transfer (freeze-all strategy) more effective than IVF with fresh and frozen-thawed blastocyst transfer (conventional strategy)?<h4>Summary answer</h4>The freeze-all strategy was inferior to the conventional strategy in terms of cumulative ongoing pregnancy rate per woman.<h4>What is known already</h4>IVF without transfer of fresh embryos, thus with frozen-thawed embryo transfer only (freeze-all strategy), is increasingly being used in clinical practice because of a presumed benefit. It is still unknown whether this new IVF strategy increases IVF efficacy.<h4>Study design, size, duration</h4>A single-centre, open label, two arm, parallel group, randomised controlled superiority trial was conducted. The trial was conducted between "],"journal":["Human reproduction (Oxford, England)"],"pubmed_title":["Transfer of fresh or frozen embryos: a randomised controlled trial."],"pmcid":["PMC7970725"],"funding_grant_id":["171101007"],"pubmed_authors":["Mol F","van der Veen F","Wong KM","Repping S","Kaaijk EM","Verhoeve HR","van Wely M","Mastenbroek S"],"additional_accession":[]},"is_claimable":false,"name":"Transfer of fresh or frozen embryos: a randomised controlled trial.","description":"<h4>Study question</h4>Is IVF with frozen-thawed blastocyst transfer (freeze-all strategy) more effective than IVF with fresh and frozen-thawed blastocyst transfer (conventional strategy)?<h4>Summary answer</h4>The freeze-all strategy was inferior to the conventional strategy in terms of cumulative ongoing pregnancy rate per woman.<h4>What is known already</h4>IVF without transfer of fresh embryos, thus with frozen-thawed embryo transfer only (freeze-all strategy), is increasingly being used in clinical practice because of a presumed benefit. It is still unknown whether this new IVF strategy increases IVF efficacy.<h4>Study design, size, duration</h4>A single-centre, open label, two arm, parallel group, randomised controlled superiority trial was conducted. The trial was conducted between ","dates":{"release":"2021-01-01T00:00:00Z","publication":"2021 Mar","modification":"2025-04-21T23:37:02.94Z","creation":"2025-04-05T19:12:35.939Z"},"accession":"S-EPMC7970725","cross_references":{"pubmed":["33734369"],"doi":["10.1093/humrep/deaa305"]}}