Our Team
Seongseok Yun MD PhD
Position: Principal Investigator
Following the completion of his MD degree at the Seoul National University, South Korea, Dr. Yun earned his PhD degree at the Mayo Clinic, Rochester, MN. He underwent internal medicine residency training at the University of Arizona, Tucson, AZ, and hematology and oncology fellowship training at the Moffitt Caner Center. As a physician-scientist with clinical and basic research expertise in hematologic malignancies, Dr. Yun’s scientific career is dedicated to identifying and targeting molecular circuits that contribute to the development, maintenance, drug-induced cytotoxicity, and resistance of blood cancers. Dr. Yun and his laboratory are supported by generous funding from National Cancer Institute, American Society of Hematology, American Society of Clinical Oncology, Southeast Trust, and the Moffitt Cancer Center.
Contact | Seongseok.Yun@moffitt.org
Nicole D. Vincelette PhD
Position: Research Instructor
Dr. Vincelette received her BS degree at the University of Norther Colorado, Greeley, CO, and PhD degree at the Mayo Clinic, Rochester, MN. Dr. Vincelette completed her Post-doc training at the Moffitt Cancer Center. Her research goals are to understand the molecular mechanisms and genetic determinants that contribute to the development, maintenance, and therapeutic response of hematological malignancies, with the goal to identify targets that are suitable for therapeutic intervention. Dr. Vincelette’s research is currently being supported by “Scholar Award, Fellow to Faculty” from American Society of Hematology, and she was recently awarded the NCI K22 Award.
Contact | Nicole.Vincelette@moffitt.org
Daehyun Lee MD
Position: Assistant Professor
Dr. Lee is a junior physician-scientist in cardiology passionate about cardio-oncology-related research. He completed medical school at Inha University, South Korea, followed by Internal Medicine and Cardiovascular Disease clinical training at the University of South Florida. His primary research focus centers on exploring the intricate relationship between clonal hematopoiesis of indeterminant potential and cardiovascular disease in cancer patients. Dr. Lee’s research is currently being supported by American Heart Association (AHA) Career Development Award and Casey DeSantis Florida Cancer Innovation Fund.
Contact | DaeHyun.Lee@moffitt.org
Jungwon Moon BS
Position: Research Associate
Jungwon graduated from the Gachon University in South Korea with a degree in Engineering. With over 10 years of experience in both industry and academia, Jungwon specializes in molecular biology and experimental techniques.
Contact | Jungwon.Moon@moffitt.org
Tiffany Razabdouski BS
Position: Research Associate
Tiffany earned her BS degree in biology from the University of South Florida. With over 20 years of research experience, she possesses extensive expertise in in vivo modelling, including genetically engineered mouse models, bone marrow transplant models, and Patient Derived Xenograft (PDX) models.
Contact | Tiffany.Razabdouski@moffitt.org
Sura-Attha Umsangtongkul BS
Position: Graduate Student
Sura-attha “Wynn” Umasangtongkul is currently a PhD candidate in the Cancer Biology program at Moffitt. Wynn is originally from Thailand. He first came to the U.S. as a high school exchange student in WI, where he continued his undergraduate education and completed his bachelor’s degree in chemistry at the University of Wisconsin-Whitewater. Since joining our lab in 2024, Wynn is particularly interested in studying MDS/MPN-U, a rare myeloid disorder with no available FDA-approved treatment. His work focuses on defining the roles of oncogenes and epigenetic regulators in MDS/MPN-U pathogenesis.
Contact | Umasangtongkuls@moffitt.org
Felyschia Lledo BSPH
Position: Research Coordinator
Felyschia graduated from the University of South Florida with a BS degree in Public Health, as well as an AA in Clinical Laboratory Sciences from Santa Fe College, and is now using her experience at Moffitt Cancer Center to contribute to the goal of finding a cure and preventing cancer. Felyschia uses her skills as a Research Coordinator for the Non-Therapeutic Research Operations team with the goal of better understanding how various treatments and therapies affect patients within the Bone Marrow Transplant and Malignant Hematology departments.
Contact | Felyschia.Lledo@moffitt.org
Dimitrios Drekolias MD
Position: Clinical Fellow
Dr. Drekolias received his MD degree from the University of Athens, Athens, Greece. He subsequently completed his Internal Medicine Residency at the University of Connecticut, Farmington, CT. He is currently a Hematology and Medical Oncology Fellow at the Moffitt Cancer Center and University of South Florida. His research interests include understanding the underlying molecular pathology of hematological myeloid malignancies and in developing novel targeted therapies.
Contact | Dimitrios.Drekolias@moffitt.org
Junyoung Park PhD
Position: Post-doc Fellow
Dr. Park graduated from the Chung-Ang University in South Korea with a BS degree in Life Sciences. He completed an integrated MS and PhD course at the same institute majoring in Molecular Biology. He has joined Yun Lab at Moffitt Cancer Center for his first post-doc position in August 2024. He is interested in discovering the pathogenesis of hematologic malignancies and the new therapeutic targets, particularly in epigenetic perspective.
Contact | Junyoung.Park@moffitt.org