With a background in IT and philosophy, and as a lecturer at HAN University of Applied Sciences, Theo had a keen analytical mind and a drive to make a difference. After facing serious health challenges, he turned his experiences into a source of motivation, not only to understand, but to contribute.

Within the Patient Perspective Programme, Theo collaborated with Oncode Investigator Geert Litjens on improving prostate cancer diagnostics. He brought patient experience and technical thinking together in a way that inspired researchers and students alike. His input helped bridge the gap between theoretical models and practical application, always with the goal of improving care for future patients.

Above all, Theo will be remembered for his warmth, his wit, and his deep sense of purpose. He once said: “Being ill and recovering is never free — if you can contribute, you should.” And he truly did.

Theo’s presence left a lasting impact. He will be deeply missed and fondly remembered.