Meet
Maria Katsarou

Associate Principal

Maria Katsarou advises pharmaceutical and biotechnology companies on early commercialization strategy, helping shape the critical decisions that define product and portfolio success.

She partners with clients to evaluate business development and licensing opportunities, prioritize indications, and design integrated development, access, and go-to-market strategies that bridge R&D and commercial objectives. Her experience spans oncology, autoimmune diseases, and vaccines, with deep expertise in advanced therapy medicinal products (ATMPs).

Before joining Avalere, Maria conducted research in molecular biology and genetics, strengthening her ability to connect scientific innovation with patient and market needs.

Maria holds an MSc in Cell and Gene Therapy from University College London and a BSc in Biology from the University of Thessaloniki. She speaks English, Greek, Spanish, and French.

Authored Content


Rare disease demands a unique playbook: The patient journey is rarely linear, the evidence base is often limited, and “rare” can have different meanings across settings and geographies. The third edition of our annual rare disease eBook explores the unique dynamics of the rare disease landscape and its implications for biotech stakeholders.

As gene therapies for rare diseases scale, system readiness and long-term stewardship–not science alone–will determine access, impact, and sustainability.