Marzia Zambon is President of Europa Donna – The European Breast Cancer Coalition, representing breast cancer patients across EU member countries and beyond. She leads strategy and operations to strengthen patient voice in European cancer policy, regulatory frameworks, and clinical guideline development. Under her leadership, Europa Donna has engaged with the European Commission, European Parliament, and European Medicines Agency to influence breast cancer screening, access to innovative treatments, and survivorship care standards.
Zambon has overseen coalition activities contributing to Europe’s Beating Cancer Plan and the European Code Against Cancer. She leads campaigns to harmonize access to quality screening programs and equitable precision diagnostics and therapies, driving measurable policy and health system improvements. She represents Europa Donna at major international forums, collaborating with UICC, ESMO, and other advocacy networks to advance multidisciplinary breast cancer care and research across Europe.
The 100 CEOs featured here reflect the diversity and complexity of modern oncology leadership. In 2025, some lead the world’s largest cancer institutions; others guide specialized societies or emerging innovators. What unites them is responsibility: for millions of patients, for the integrity of science, and for the future direction of cancer care globally.
This list is not a celebration of power, but a recognition of stewardship, accountability, and impact – and of the leaders whose choices continue to shape the fight against cancer. For the many deserving individuals not mentioned in this list, we will continue to acknowledge, honor and elevate your voices in our daily publications from across the world.
See the full list of The 100 Most Influential CEOs in Oncology in 2025, and stay tuned for other special category nominations.
