Adjunct Faculty
Adjunct faculty typically have an academic or research appointment at another institution and contribute or collaborate with one or more School of Medicine faculty members or programs.
Adjunct rank detailsDionisios Sakkas, PhD
About
Research
Publications
2025
A high proportion of immature oocytes in a cycle cohort does not compromise embryo development or live birth rates after ICSI
Sripada V, Sakkas D, Vaughan D, Morse B, Fouks Y. A high proportion of immature oocytes in a cycle cohort does not compromise embryo development or live birth rates after ICSI. Human Reproduction 2025, deaf167. PMID: 40912262, DOI: 10.1093/humrep/deaf167.Peer-Reviewed Original ResearchLive birth rateProportion of immature oocytesIVF-ICSI cyclesGonadotropin dosageBirth rateIVF-ICSIEmbryo transferAnti-Mullerian hormone levelsPropensity score matchingOvarian stimulation protocolsMetaphase-IIImmature oocytesFresh embryo transferProportion of mature oocytesPGT-AFertility clinicsIVF outcomesMature oocytesLower pregnancyEmbryo developmentFertilization rateLower blastocyst formationOocyte quality markersMetaphase-II oocytesPreimplantation genetic testingFine particulate matter exposure and sperm DNA fragmentation in US men: a spatial cross-sectional study
Fouks Y, Vaughan D, Bortoletto P, Chang J, Lantsberg D, Datta V, McSweeney B, Schwartz J, Sakkas D. Fine particulate matter exposure and sperm DNA fragmentation in US men: a spatial cross-sectional study. Human Reproduction 2025, deaf173. PMID: 40897385, DOI: 10.1093/humrep/deaf173.Peer-Reviewed Original ResearchPM2.5 exposureEnvironmental air pollutionAir pollutionExposure to fine particulate matterFine particulate matter exposureSocioeconomic statusFine particulate matterExposure to PM2.5Cross-sectional studyParticulate matter exposureIndividual-level exposuresReproductive health consequencesPM2.5Particulate matterDNA fragmentation indexSperm DNA fragmentationLow SES areasFertility evaluationLinear mixed-effects modelsMen of lower socioeconomic statusLow socioeconomic statusPopulation densitySatellite-derived modelsReproductive health interventionsExposure proxiesThe Future of the IVF Laboratory
Ardestani G, Venturas M, Vaughan D, Sakkas D. The Future of the IVF Laboratory. 2025, 205-215. DOI: 10.1201/9781003460275-24.Peer-Reviewed Original ResearchWhen does sperm impact fertilization success? The incidence of sperm-related poor fertilization after ICSI in 13 632 matched oocyte donation cycles
Torra-Massana M, Morse B, Miguel-Escalada I, Guillén J, Rodriquez-Aranda A, Popovic M, Sakkas D. When does sperm impact fertilization success? The incidence of sperm-related poor fertilization after ICSI in 13 632 matched oocyte donation cycles. Human Reproduction 2025, deaf152. PMID: 40794597, DOI: 10.1093/humrep/deaf152.Peer-Reviewed Original ResearchOocyte donation modelPoor fertility outcomesFertility outcomesICSI cyclesFertilization rateSperm-related factorsMale-related factorsMale factorOocyte donorsComplete fertilization failureDonation modelOocyte donation cyclesOrdinary least squares regressionFertilization successDonation cyclesRecipient cyclesDonor oocytesSibling oocytesMale-relatedOocyte donationFertility diagnosticsOocyte vitrificationPoor fertilityClinical relevanceImpact fertilization successAchieving Two Live Births from One Ovarian Stimulation Cycle: The One-and-Done Approach Revisited
Huttler A, Duvall D, Sakkas D, Heyward Q, Sabbagh R, Alper M, Vaughan D. Achieving Two Live Births from One Ovarian Stimulation Cycle: The One-and-Done Approach Revisited. Fertility And Sterility 2025 PMID: 40712966, DOI: 10.1016/j.fertnstert.2025.07.029.Peer-Reviewed Original ResearchIn vitro fertilizationHigh-quality embryosPreimplantation genetic testingProportion of patientsLive birthsStimulated cyclesGenetic testingIn vitro fertilization cyclesEmbryo transfer cyclesIn vitro fertilization stimulation cycleOvarian stimulation cyclesRetrospective cohort studyMultivariate logistic regression modelIn vitro fertilization practiceOocyte yieldOocyte retrievalTransfer cyclesLogistic regression modelsCohort studyOocyte numberInfertility practiceFrozen embryosPatientsOocytesBirthINCIDENCE AND ZYGOSITY OF MULTIPLE BIRTHS FOLLOWING A NATURAL OR PROGRAMMED SINGLE FROZEN BLASTOCYST TRANSFER CYCLE
Meyers A, Mensah V, Sakkas D, Vaughan D. INCIDENCE AND ZYGOSITY OF MULTIPLE BIRTHS FOLLOWING A NATURAL OR PROGRAMMED SINGLE FROZEN BLASTOCYST TRANSFER CYCLE. Fertility And Sterility 2025, 124: e64. DOI: 10.1016/j.fertnstert.2025.05.101.Peer-Reviewed Original ResearchTRENDS IN EMBRYO DISPOSITION IN THE ERA OF PGT-A
Huttler A, Duvall D, Morse B, Heyward Q, Patel K, Sakkas D, Vaughan D, Penzias A. TRENDS IN EMBRYO DISPOSITION IN THE ERA OF PGT-A. Fertility And Sterility 2025, 124: e78. DOI: 10.1016/j.fertnstert.2025.05.124.Peer-Reviewed Original ResearchDOES ENDOMETRIAL FLUID IMPACT OUTCOMES IN SINGLE EUPLOID FROZEN EMBRYO TRANSFERS?
Patel K, Sakkas D, Duvall D, Morse B, Penzias A, Vaughan D. DOES ENDOMETRIAL FLUID IMPACT OUTCOMES IN SINGLE EUPLOID FROZEN EMBRYO TRANSFERS? Fertility And Sterility 2025, 124: e38. DOI: 10.1016/j.fertnstert.2025.05.051.Peer-Reviewed Original ResearchEXAMINING THE IMPACT OF THE UTERINE MICROBIOME ON REPRODUCTIVE OUTCOMES
Heyward Q, Vaughan D, Morse B, Duvall D, Sakkas D, Huttler A, Patel K, Penzias A. EXAMINING THE IMPACT OF THE UTERINE MICROBIOME ON REPRODUCTIVE OUTCOMES. Fertility And Sterility 2025, 124: e36-e37. DOI: 10.1016/j.fertnstert.2025.05.048.Peer-Reviewed Original ResearchModified Versions of Natural Frozen Embryo Transfers Do Not Impact Live Births
Hargreaves C, Craig W, Sakkas D, Toth T, Vaughan D. Modified Versions of Natural Frozen Embryo Transfers Do Not Impact Live Births. Fertility And Sterility 2025 PMID: 40588150, DOI: 10.1016/j.fertnstert.2025.06.036.Peer-Reviewed Original ResearchFrozen embryo transferVaginal progesterone supplementationHuman chorionic gonadotropinLive birthsProgesterone supplementationEmbryo transferNatural frozen embryo transferFrozen embryo transfer cyclesHuman chorionic gonadotropin triggerIncidence of live birthPercentage of live birthsNatural FET cyclesReference groupUniversity-affiliated fertility clinicCohort of patientsRetrospective cohort studyFET cyclesNatural cyclesAromatase inhibitorsChorionic gonadotropinCohort studyIndividual patientsPatientsStudy protocolBirth