Gerhard and Ruth Cless turned to Duke in 2002 when their son, Bryan, was diagnosed with a malignant brain tumor. It was a difficult time, but today Bryan is the healthy father of four children. The Clesses, who say they believe Duke’s brain tumor team is “the best in the world,” established a fund for brain tumor research, and this year created the Cless Family Neuro-Oncology Professorship with a $2.5 million gift. Endowed professorships allow Duke to attract and retain world leaders in science and medicine.