From Terminal to Turnaround: How GitLab’s Co-Founder Hacked His Cancer with AI

When standard medical care fails, most people accept their fate. When you are the co-founder of a multi-billion dollar open-source company, you treat your body like a legacy codebase—and you start debugging. In a recent, deeply moving OpenAI Forum event , Sid Sijbrandij (Co-founder and Executive Chair of GitLab) and Jacob Stern (Geneticist) sat down to explain how they leveraged advanced diagnostics, biological engineering, and ChatGPT to fight a rare and aggressive form of bone cancer: Osteosarcoma. This isn't just an inspiring story. It is a masterclass in treating biology as an engineering problem. Here is the technical breakdown of how they did it. 🛑 The Walled Garden of Modern Medicine Sid’s journey began with a misdiagnosed pain during a bench press. It escalated into emergency spinal surgery to remove a six-centimeter tumor. He endured radiation, severe chemotherapy, and four blood transfusions just to stay alive. Despite standard treatments and even experimental click-chemistry