title: Vitamin D levels do not affect IVF outcomes following the transfer of euploid blastocysts.
abstract: OBJECTIVE
  We sought to characterize the relationship between serum 25-hydroxy vitamin D (25-OH D) levels and implantation and clinical pregnancy rates in women who undergo a euploid blastocyst embryo transfer.
  
  
  METHODS
  This retrospective cohort study, conducted in an academic setting, included 529 cycles in which comprehensive chromosome screening was performed as part of routine infertility care with an autologous transfer of 1 or 2 euploid blastocysts. After excluding repeat cycles there were 517 unique cycles representing 517 women for evaluation. Vitamin D levels from serum samples obtained on the day of ovulation trigger in the fresh in vitro fertilization cycle were analyzed. The primary outcome was ongoing pregnancy rate as defined by sonographic presence of fetal heart rate at >8 weeks' gestation.
  
  
  RESULTS
  For the population as a whole, serum vitamin D ranges and pregnancy outcomes did not correlate. Furthermore, pregnancy rates did not differ when comparing women in different strata of vitamin D levels (<20, 20-29.9, and ≥30 ng/mL). No meaningful breakpoint for vitamin D levels and ongoing pregnancy rate was identified using receiver operating characteristic analysis with the resultant line possessing an area under the curve of 0.502. Multivariate logistic regression controlling for age, transfer order, race, season, and body mass index did not yield a different result. The study was powered to detect an 18% difference in ongoing pregnancy rates between patients grouped by the 3 vitamin D ranges.
  
  
  CONCLUSIONS
  In women undergoing euploid embryo transfer, vitamin D status was unrelated to pregnancy outcomes. Measuring serum 25-OH vitamin D levels does not predict the likelihood that euploid blastocysts will implant. These results may not apply to women who do not undergo extended embryo culture, blastocyst biopsy for comprehensive chromosome screening, and euploid embryo transfer.
authors.affiliation: Division of Reproductive Endocrinology, Department of Obstetrics, Gynecology, and Reproductive Sciences, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ. Electronic address: jfranasiak@rmanj.com.
authors.forename: Jason M
authors.initials: JM
authors.lastname: Franasiak
authors.affiliation: Reproductive Medicine Associates of New Jersey, Basking Ridge, NJ.
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Molinaro
authors.affiliation: Reproductive Medicine Associates of New Jersey, Basking Ridge, NJ.
authors.forename: Erin K
authors.initials: EK
authors.lastname: Dubell
authors.affiliation: Reproductive Medicine Associates of Connecticut, Norwalk, CT.
authors.forename: Katherine L
authors.initials: KL
authors.lastname: Scott
authors.affiliation: Reproductive Medicine Associates of New Jersey, Basking Ridge, NJ.
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Ruiz
authors.affiliation: Division of Reproductive Endocrinology, Department of Obstetrics, Gynecology, and Reproductive Sciences, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ; Reproductive Medicine Associates of New Jersey, Basking Ridge, NJ.
authors.forename: Eric J
authors.initials: EJ
authors.lastname: Forman
authors.affiliation: Division of Reproductive Endocrinology, Department of Obstetrics, Gynecology, and Reproductive Sciences, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ.
authors.forename: Marie D
authors.initials: MD
authors.lastname: Werner
authors.affiliation: Division of Reproductive Endocrinology, Department of Obstetrics, Gynecology, and Reproductive Sciences, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ.
authors.forename: Kathleen H
authors.initials: KH
authors.lastname: Hong
authors.affiliation: Division of Reproductive Endocrinology, Department of Obstetrics, Gynecology, and Reproductive Sciences, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ; Reproductive Medicine Associates of New Jersey, Basking Ridge, NJ.
authors.forename: Richard T
authors.initials: RT
authors.lastname: Scott
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000097:blood; D001755:Blastocyst; D015331:Cohort Studies; D010064:Embryo Implantation; D004624:Embryo Transfer / Q000379:methods; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D016015:Logistic Models; D008875:Middle Aged; D015999:Multivariate Analysis; D063868:Patient Outcome Assessment; D011247:Pregnancy; D018873:Pregnancy Rate; D012372:ROC Curve; D012189:Retrospective Studies; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood; D014808:Vitamin D Deficiency / Q000097:blood / Q000175:diagnosis
chemical_list: D015415:Biomarkers; D014807:Vitamin D; C104450:25-hydroxyvitamin D
keywords: 25-hydroxy vitamin D; aneuploidy; pregnancy rates; vitamin D