Stelios Tzellos is a pharmaceutical leader with expertise in oncology, forecasting, and commercial analytics. He studied Biochemistry and Molecular Biology at Imperial College London and has held roles in forecasting, insights, and strategy across GlobalData, IQVIA, and AstraZeneca. His work has informed market research reports and industry commentary, including analyses on treatments for Hodgkin’s lymphoma, multiple myeloma, and leukemia, as well as oncology pipeline trends.