[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100539511":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":18,"centralContacts":24,"locations":30,"responsibleParty":49,"collaborators":18,"id":53,"slug":18,"hasResults":54,"nctId":55,"briefTitle":56,"officialTitle":57,"acronym":18,"eligibilityCriteria":58,"healthyVolunteers":54,"sex":59,"minAge":60,"maxAge":61,"enrollmentInfo":62,"targetDuration":18,"studyType":65,"phases":66,"briefSummary":68,"conditions":69,"keywords":18,"overallStatus":33,"whyStopped":18,"lastUpdateSubmitDate":72,"lastUpdatePostDateStruct":73,"startDateStruct":76,"completionDateStruct":78,"leadSponsor":80,"locationsCount":81},{"fullName":5,"class":6},"Rigshospitalet, Denmark","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Immediate FET in a stimulated or programmed cycle","EXPERIMENTAL","Stimulated or programmed cycle FET is performed in the first cycle following failed fresh embryo transfer or freeze all.",[13],"Procedure: Immediate FET in a stimulated or programmed cycle",{"label":15,"type":16,"description":17,"interventionNames":18},"Postponed FET in a stimulated or programmed cycle","NO_INTERVENTION","Stimulated or programmed cycle FET is performed at least one full menstrual, or one hormonal replacement treatment (HRT) cycle in case of oligo-anovulation, after the fresh embryo transfer or freeze-all cycle",null,[20],{"type":21,"name":9,"description":22,"armGroupLabels":23,"otherNames":18},"PROCEDURE","Patients will undergo FET in the cycle immediately following oocyte retrieval and a failed fresh embryo transfer or freeze all.",[9],[25],{"name":26,"role":27,"phone":28,"phoneExt":18,"email":29},"Anja B Pinborg, Prof., DMSC","CONTACT","0045 35 45 64 30","anja.bisgaard.pinborg@regionh.dk",[31],{"facility":32,"status":33,"city":34,"state":18,"zip":35,"country":36,"cosmosGeoPoint":37,"geoPoint":42,"contacts":43},"Fertility Departmen, Rigshospitalet","RECRUITING","Copenhagen","2100","Denmark",{"type":38,"coordinates":39},"Point",[40,41],12.56553,55.67594,{"lat":41,"lon":40},[44,46],{"name":45,"role":27,"phone":28,"phoneExt":18,"email":29},"Anja B. Pinborg, Prof., DMSC",{"name":47,"role":27,"phone":18,"phoneExt":18,"email":48},"Clara Colombo, MD","clara.colombo@regionh.dk",{"type":50,"investigatorFullName":51,"investigatorTitle":52,"investigatorAffiliation":5,"oldNameTitle":18,"oldOrganization":18},"PRINCIPAL_INVESTIGATOR","Anja Bisgaard Pinborg","Prof. DMSc","100539511",false,"NCT06304792","Immediate Versus Postponed Single Blastocyst Transfer in Programmed or Stimulated Cycle Frozen Embryo Transfer","Immediate Versus Postponed Single Blastocyst Transfer in Programmed or Stimulated Cycle Frozen Embryo Transfer: a Multicenter Randomized Controlled Trial","Inclusion Criteria:\n\n* Eligible for FET in a programmed- or stimulated cycle immediately following a fresh embryo transfer or freeze all cycle\n* Oligo-anovulatory women (cycle length \\> 35 days)\n* Ovulatory women (cycle length 21-35 days)\n* At least one vitrified day 5 or 6 blastocyst with Gardner score of ≥ 3BB at the day of vitrification\n\nExclusion Criteria:\n\n* Uterine malformation\n* Presence of hydrosalpinx, submucosal uterine myomas or uterine polyps\n* Allergies or contraindication to standard fertility medication\n* Male or female HIV or Hepatitis B or C\n* Preimplantation genetic testing (PGT) in the fresh cycle\n* Testicular sperm aspiration (TESA)\n* Severe OHSS with hospital admission and ascites drainage during the fresh cycle\n* Oocyte donation","FEMALE","18 Years","40 Years",{"count":63,"type":64},484,"ESTIMATED","INTERVENTIONAL",[67],"NA","The aim of this randomized controlled trial is to examine whether single blastocyst transfer in the first cycle after oocyte retrieval (immediate) is non-inferior to single blastocyst transfer in a subsequent cycle (postponed) in stimulated or programmed cycle frozen embryo transfer (FET). The primary outcome is live birth rate.",[70,71],"Infertility","IVF","2025-08-05",{"date":74,"type":75},"2025-08-11","ACTUAL",{"date":77,"type":75},"2024-02-01",{"date":79,"type":64},"2028-08-01",{"name":5,"class":6},1]