People

Kutluk Oktay MD, Ph.D. is a clinician-scientist-reproductive surgeon, the world’s leading expert in fertility preservation, and a renowned ovarian biologist. He balances his time between his research laboratory which studies mechanisms of ovarian aging and chemotherapy-induced damage to ovarian reserve as well as those regulating maintenance of ovarian reserve in the human ovary, and his clinical practice and trials on fertility preservation and infertility. He developed and performed the world’s first ovarian transplant procedure with cryopreserved tissue and pioneered innovative ovarian stimulation protocols for cancer patients. In addition, he described the first oocyte freezing protocols in young pubertal girls with Turner syndrome and other medical conditions. Dr. Oktay developed a new ovarian transplantation technique utilizing a human extracellular matrix scaffold and robotic surgery, which further improved the outcomes of ovarian transplantation. Dr. Oktay recently developed the NoPauze procedure which can extend reproductive lifespan and delay menopause by tissue cryopreservation and other means (see www.fertilitypreservation.org).

He is the founder and first chair of the highly successful Fertility Preservation Special Interest Group at the American Society of Reproductive Medicine, which awarded him the Distinguished Service Award in 2022. He served as the co-chair of the American Society of Clinical Oncology Guidelines of Committee from 2005-2025, which shaped the practice of fertility preservation for nearly two decades.

As an accomplished fertility specialist, he has been repetitively named among the country's top doctors in his field by Castle and Connolly and other organizations. He has published over 200 manuscripts, including those in leading medical journals, such as the New England Journal of Medicine, Lancet, Science Translational Medicine, JAMA, JAMA Oncology, and Journal of Clinical Oncology. He published over 40 book chapters and is the editor of the first textbook on ovarian cryopreservation and transplantation published in 2022.

As a clinician-scientist, Dr. Oktay has been conducting key basic research on ovarian follicle development and aging. He discovered the role of BRCA function and DNA repair in ovarian and oocyte aging. As a result, Dr. Oktay was the first to discover that women who carry the BRCA mutations have accelerated ovarian aging.

As a translational researcher carrying discoveries from bench to bedside, he has been continuously funded by the National Institute of Health and other sources over the past 20 years and received numerous national and international awards from professional societies and patient organizations for his contributions.

He is a sought-after educator and lectures around the world on clinical, translational, and basic science topics in ovarian biology, aging, fertility preservation, assisted reproduction, genome editing, and others.

Na-Young Rho obtained PhD in Reproductive Biology from the University of Guelph, Ontario Veterinary College, Canada. Na-Young has been working in the reproduction field for the past 10 years, gaining knowledge and skills in molecular biology and in Assisted Reproductive Technology (ART) techniques. Na-Young is highly experienced in all aspects of molecular biology, including single-oocyte qRT-PCR and RNA-sequencing. Further, she has conducted various experiments using micro-manipulation to perform intracytoplasmic sperm injection (ICSI), polar body and blastomere biopsy, microinjection, and somatic cell nuclear transfer (SCNT). She has experienced hands in handling oocytes and sperm leading to high success rates/development in in vitro fertilization. Na-Young is also experienced in ovarian tissue cryopreservation bith with slow freezing and vitrification. Na-Young’s current project is to decipher the mechanism underlying the accelerated loss of ovarian reserve with age.

Dr. Soner Celik graduated from Karadeniz Technical University, Turkey with a bachelor’s degree in biology in 2008. Following his military service, he worked in the private sector for 3 years where he gained valuable experience and developed strong interpersonal skills. He obtained a MSc in Reproductive Biology in 2015 and a PhD in Histology and Embryology in 2021 at Akdeniz University School of Medicine. During his MSc and PhD studies, he worked on investigation of inhibitor molecules that control primordial follicle reserve after ovarian cryopreservation and transplantation. Currently, he is studying the potential delayed mechanisms of chemotherapy-induced ovarian follicle reserve loss, and he is focusing on mechanisms and treatments that prevent DNA damage and/or chemo-induced pro-apoptotic state in primordial follicles.

Reiko is an OBGYN resident and an M.D. in Ph.D. trainee at Saint Marianna University School of Medicine in Kawasaki, Japan. She is currently completing her oversea laboratory research training at Oktay Lab. Her current project is to determine the role of ATM-Pathway function in the maintenance of oocyte quality. Her research recently earned her the Society of Reproductive Investigation President’s Award and the International Training Grant in 2023.