[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100645392":3},{"organization":4,"armGroups":7,"interventions":14,"overallOfficials":19,"centralContacts":26,"locations":36,"responsibleParty":54,"collaborators":10,"id":56,"slug":57,"hasResults":58,"nctId":59,"briefTitle":60,"officialTitle":61,"acronym":62,"eligibilityCriteria":63,"healthyVolunteers":58,"sex":64,"minAge":65,"maxAge":66,"enrollmentInfo":67,"targetDuration":10,"studyType":70,"phases":10,"briefSummary":71,"conditions":72,"keywords":75,"overallStatus":39,"whyStopped":10,"lastUpdateSubmitDate":78,"lastUpdatePostDateStruct":79,"startDateStruct":82,"completionDateStruct":84,"leadSponsor":86,"locationsCount":87},{"fullName":5,"class":6},"Fakih IVF Fertility Center","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"Women undergoing frozen embryo transfer (FET) at Fakih IVF",null,"The study will enroll women aged 18-40 years with a BMI of 18-40 kg\u002Fm² undergoing FET at Fakih IVF, who had serum vitamin D assessed within three months prior to transfer. Women with deficient levels (\\\u003C30 ng\u002FmL) must have received supplementation prior to FET to be eligible.\n\nExclusions are designed to reduce confounding: women are excluded if vitamin D was not measured within the required window, if identified deficiency went untreated, or if they have a history of recurrent implantation failure (RIF). Women with uterine factors known to impair implantation including congenital anomalies, intrauterine adhesions, or submucosal fibroids are also excluded, as are those with significant medical comorbidities that may independently affect pregnancy outcomes.",[13],"Other: No Intervention: Observational Cohort",[15],{"type":6,"name":16,"description":17,"armGroupLabels":18,"otherNames":10},"No Intervention: Observational Cohort","There are no interventions in this study. This is an observational cohort study.",[9],[20,24],{"name":21,"affiliation":22,"role":23},"Lamiya Mohiyiddeen, MD, FRCOG","Fakih IVF Abu Dhabi","PRINCIPAL_INVESTIGATOR",{"name":25,"affiliation":22,"role":23},"Michael Fakih, MD",[27,32],{"name":28,"role":29,"phone":30,"phoneExt":10,"email":31},"Dr. Lamiya Mohiyiddeen, MD, FRCOG","CONTACT","+971543676002","lamiya.mohiyiddeen@fakihivf.com",{"name":33,"role":29,"phone":34,"phoneExt":10,"email":35},"Fatma Bathawab, PhD","+971585707393","fatma.bathawab@fakihivf.com",[37],{"facility":38,"status":39,"city":40,"state":10,"zip":10,"country":41,"countryCode":42,"cosmosGeoPoint":43,"geoPoint":48,"contacts":49},"Fakih IVF Fertility Centre LLC","RECRUITING","Abu Dhabi","United Arab Emirates","AE",{"type":44,"coordinates":45},"Point",[46,47],54.39696,24.45118,{"lat":47,"lon":46},[50,51,52,53],{"name":28,"role":29,"phone":30,"phoneExt":10,"email":31},{"name":33,"role":29,"phone":34,"phoneExt":10,"email":35},{"name":25,"role":23,"phone":10,"phoneExt":10,"email":10},{"name":21,"role":23,"phone":10,"phoneExt":10,"email":10},{"type":55,"investigatorFullName":10,"investigatorTitle":10,"investigatorAffiliation":10,"oldNameTitle":10,"oldOrganization":10},"SPONSOR","100645392","an-investigation-of-the-effect-of-vitamin-d-level-during-frozen-embryo-transfer-fet-in-ivf-and-pregnancy-outcomes-100645392",false,"NCT07681115","An Investigation of the Effect of Vitamin D Level During Frozen Embryo Transfer (FET) in IVF and Pregnancy Outcomes","Vitamin D Levels and Pregnancy Outcomes Following Frozen Embryo Transfer (FET) in the UAE","VitD in FET","Inclusion:\n\n* Women undergoing frozen embryo transfer (FET) at Fakih IVF.\n* Age between 18 and 40 years.\n* Body mass index (BMI) between 18 and 40 kg\u002Fm².\n* Patients who had serum vitamin D levels assessed within three months prior to FET\n* Supplementation with Vitamin D if deficient \\\u003C 30 ng\u002FmL (75 nmol\u002FL).\n\nExclusion:\n\n* Age below 18 years or above 40 years.\n* BMI below 18 kg\u002Fm² or above 40 kg\u002Fm².\n* Patients who did not have vitamin D levels measured within three months prior to FET.\n* Patients who were found to have low vitamin D levels but did not receive supplementation.\n* Patients with recurrent implantation failure (RIF).\n* Patients with known uterine factors affecting implantation (e.g., congenital uterine anomalies, intrauterine adhesions, submucosal fibroids).\n* Patients with significant medical comorbidities that may affect pregnancy outcomes.","FEMALE","18 Years","40 Years",{"count":68,"type":69},126,"ESTIMATED","OBSERVATIONAL","Vitamin D is best known for keeping our bones healthy, but growing research suggests it may also play a role in fertility. Many IVF clinics now routinely check vitamin D levels and prescribe supplements before treatment, but the science is still unclear on whether this actually improves the chances of pregnancy.\n\nOur study, based in the UAE, aims to find out whether a woman's vitamin D level on the day of her frozen embryo transfer (FET) makes a difference to whether she becomes pregnant and delivers a baby. The UAE is an ideal setting for this research, as vitamin D deficiency is particularly common in the region. The findings could shape how fertility clinics screen and treat women seeking fertility treatment in the future.",[73,74],"Vitamin D Insufficiency","In Vitro Fertilization and Embryo Transfer",[76,77],"frozen embryo transfer cycle","Vitamin D","2026-06-26",{"date":80,"type":81},"2026-07-02","ACTUAL",{"date":83,"type":81},"2026-06-01",{"date":85,"type":69},"2027-08",{"name":5,"class":6},1]