In 2007, Stefan's mom, who has always been very close to him, was diagnosed with non-Hodgkin lymphoma at an advanced stage. After successful treatment, the cancer has now been in remission for almost 12 years. Together with Stefan's dad, she lives a full, happy life in good health, despite her advanced age of 79 years. The couple still live in the same house where Stefan grew up, in a small town near the Bavarian Alps.

As the world's largest independent cancer charity, there are few organisations who have done more to work on cures for cancer. Stefan donates to them on a monthly basis. As early as 1977, Cancer Research UK published pioneering research into non-Hodgkin lymphoma, that would change the game forever. There are currently several Cancer Research UK projects focused on finding more effective treatments for lymphoma. Even though Cancer Research UK is a UK charity, the research results are, of course, being made available to hospitals and scientists worldwide.