Dr. Krzysztof Jeziorski is a clinical oncologist at the National Institute of Oncology named after Maria Sklodowska-Curie National Research Institute and a consultant for clinical trials at the National Institute of Geriatrics, Rheumatology and Rehabilitation. He worked as a Dean at the Pope John Paul II in Biała Podlaska, Faculty of Health Sciences and Social Sciences, State Higher School. His research topics mainly include chemotherapy and targeted therapy of gastrointestinal malignancies, geriatric oncology, artificial intelligence in oncology, clinical trials, and public health in oncology.