Ophélie Calas-Zeroug

Associate Director of Biostatistics

Ophélie Calas-Zeroug is Associate Director of Biostatistics within the Cytel PBS Biostatistics team since 2022. She brings over 17 years of experience in clinical research, with a strong focus on oncology — a therapeutic area in which she has developed deep expertise across all phases of drug development. Her work spans protocol development, statistical analysis plans, randomization schedules, sample size calculations, and statistical reporting for Phase I to Phase IV trials. In addition to oncology, she has contributed to studies in cardiology, endocrinology, and neuropsychiatry.

Prior to joining Cytel, Ophélie held lead biostatistician roles at Labcorp, AB Science, Sorin, Servier, and Cardinal Systems. In these roles, she not only delivered core statistical services but also played a key role in launching new projects – giving her a broad and strategic understanding of both domestic and international pharmaceutical development.