‘”It is scientifically interesting that Mr. Martin only had stage 2 disease at 59 years old, as by that age most cases in our brain bank have advanced to stage 3 or 4. There are a number of variables that we don’t yet understand that could account for this finding, such as lower lifetime exposure to brain trauma, later onset of the disease, genetic risk factors, among others,” Dr. Robert Cantu, a leading concussion expert and a CSTE co-director, said.’