Tesfahun Admasu, Ph.D., is a cell biologist and translational immunologist whose research focuses on ageing biology, cellular senescence, immunosenescence, and cancer immunotherapy. He is currently a Project Scientist in the Department of Neurosurgery at Cedars-Sinai Medical Center in Los Angeles, where his work focuses on translational immuno-oncology and therapeutic strategies to enhance antitumor immunity and reprogram the tumor microenvironment. Dr. Admasu received his Ph.D. in Biochemistry from the National University of Singapore. His research has investigated molecular and cellular mechanisms of ageing, including cellular senescence, senescent-cell immune surveillance, iron dyshomeostasis and ferroptosis, immunometabolism, and signalling pathways regulating healthspan and longevity. His work has contributed to the development of senotherapeutic and immunotherapeutic strategies, including approaches targeting primary and paracrine senescent cells, ferroptosis-related vulnerabilities, and immune-mediated clearance of senescent cells. His research has been published in journals including *Cell Reports*, *Developmental Cell*, and *Ageing Research Reviews*. His broader research interests encompass signal transduction in ageing and age-related diseases, T-cell biology and exhaustion, tumour immunology, immunometabolism, cellular rejuvenation, and interventions aimed at extending healthspan.