Gleason 6: Is it really prostate ‘cancer’? The growing debate. In this clip, Dr. Scott Eggener of UChicago Medicine explains why he and many others believe Gleason 6 prostate cancer should be reclassified—and why that could benefit patients and public health. “Grade group one or Gleason six prostate cancer is literally not capable of causing symptoms, spreading to other parts of the body, or killing men. And by a dictionary layperson’s definition of cancer versus benign, it meets all the criteri