After exhausting standard treatments for bone cancer, Sytse has pioneered a patient-driven approach to cancer care, creating new treatments and scaling the model for others through EvenOne Ventures.
When Sytse received his diagnosis of osteosarcoma in the T5 vertebrae of his upper spine, he faced a medical system that had run out of answers. After exhausting standard-of-care treatment options and finding no clinical trials available, he made a radical decision: to take full agency over his own treatment.
This wasn't just about trying alternative therapies or seeking second opinions. Sytse embarked on a comprehensive approach that included maximum diagnostics, creating entirely new treatments, and running multiple therapies in parallel. His journey represents a fundamental shift in how patients can engage with their own care when traditional medicine reaches its limits.
The depth of Sytse's approach is documented in an extensive article by Elliot Hershberg, who chronicled the technical and personal aspects of this cancer journey. For those interested in the specifics, Sytse has made his treatment deck publicly available, along with a recording of his presentation at the OpenAI Forum where he discussed his methodology and findings.
What makes this story particularly compelling is Sytse's commitment to scaling his approach beyond his own case. Through EvenOne Ventures, he's building companies specifically designed to help other patients take similar agency in their treatment. This entrepreneurial response to a personal health crisis demonstrates how individual necessity can drive systemic innovation.
The medical industry's limitations in Sytse's case mirror a broader critique articulated by Ruxandra in her article about bureaucracy blocking patient access to experimental treatments. The tension between established protocols and patient-driven innovation sits at the heart of Sytse's journey.
For those interested in the data behind this approach, Sytse has made an unprecedented amount of information publicly available. His treatment timeline and a comprehensive data overview document, including 25TB of publicly readable Google Cloud buckets, can be found at osteosarc.com. This level of transparency is rare in medical cases and provides valuable insights for both patients and researchers.
The companies being built through EvenOne Ventures represent the next phase of this work - transforming a personal health strategy into a scalable model that could help others facing similar dead ends in conventional treatment. It's a powerful example of how necessity, combined with technical expertise and entrepreneurial drive, can create new pathways in healthcare.
Sytse's journey raises important questions about patient autonomy, the pace of medical innovation, and the role of individual agency in healthcare. While his approach isn't suitable for everyone, it demonstrates what becomes possible when patients refuse to accept the limitations of current medical paradigms.
For those interested in following this work or learning more about the companies being built to scale this approach, Sytse maintains a mailing list and can be reached at [email protected]. His story continues to evolve, offering insights into both the challenges and opportunities of patient-driven healthcare innovation.

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