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.
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.
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.
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.
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.
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.